New to the scooters here. My son has a stock 2013 quattronove 50x, we are wanting to keep it stockish but would like to make it quicker than 50km/hr. Would this clutching do this or not?
First explanation I’ve seen that completely and clearly describes what a variator is doing and how roller weight affects the rpm at which the pulley’s effective diameter changes as well as the rate at which that change takes place all else being equal. Excellent video! Subbed and liked.
For a year now, I've known how to change a belt and assemble a varitator. But I was in the dark with how it worked. I watched so many videos explaining it but your style of explaining how it works was super easy to understand. Thank you for making this video, keep going!
This is how an instructional video is done - clear, to the point and you know what you’re talking about. The Americans just waffle on and on and on for ages and say very little. This is a breath of fresh air. I just subscribed . Thank you for doing this so well
@@elizabethmcheffey8699 Americas economy will collapse in your lifetime under the weight of 29 Trillion Dollars (and rising), you cant even afford the interest repayments on 29 trillion dollars, the ignorance of America is impressive. You could try to pray the problem away hehehe. The rest of the world knows this and is laughing at America. outside America, you are the butt of all jokes. Land of the fleeced home of the slave. good luck with that
Thank you for doing this video! I’m just learning as I go and everytime I ask another rider.. they always say it’s easy but never really explain it like the way you just did! Thank you again
Hello, I have a problem, I have a Peugeot Speedfight 1 100cc that recently seized up/heat seized. It was not tuned. I then changed the cylinder, piston etc. It now starts up right away, but after a while it dies all of a sudden (as if you had turned off the key) and then I can start it right up again, this usually happens when I go over 60 km/h or uphill. When I changed the cylinder etc, I also cleaned everything thoroughly, such as the carburettor, intake, new air filter, new fuel filter (there was no fuel filter before) new spark plug. I also removed the oil pump and put a metalplate with a gasket over the hole instead, I now mix the oil directly into the gasoline. Some other info that might be important. - When I drive over 60 km/h, it starts to make a noise from the variator (CVT), it´s sounds quite a lot. - When it died, I tried to start it again while it was rolling and then it started right away, but it made a noise from the variator, like something "let go" that had been seized up, like a rubber sound, maybe from the belt. - The variator belt touches the variator cover on the inside and has grinded a cut in the metal. - In the variator, where the weights are, the belt does not go down to the bottom of the wheel. - The clutch bell had turned blue from the heat. - The place where the connecting rod attaches to the crankshaft had turned blue from heat. - There was no fuel filter on it before. But i now saw there is an internal fuel filter in the gastank, can it affect the vacuum if you now have 2 fuel filters. Please help me. Regards Andree.
@@scooterstreetau No i did not, i tested the oilpump and it worked, but i am not sure about the flow. Anyway, i removed it and put a plate over the hole, and now i use premix. What could have caused the seizure then, all i can think of is lack of oil.
@@NorthSurvival At times as a bike ages the air and fuel flow changes and you see unbalanced mixtures, there are many variables here, poor air filtering, weather changes, rubber perishing, blockages etc. As a precaution I check all of the systems and their associated parts and also richen the fuel during testing..
@@scooterstreetau I took it for a testdrive today and after a while it stopped, so i removed the variator cover to check how it looked and the axle where the weights are that goes into the engine was stuck, so i turned it a bit and it let go, and after it was a bit hard to start again. What could this be? I checked the fuel line and the vacuum valve that goes into the gastank and they worked, if it was some bad bearings in the engine would that be enough to stop the engine while running? If it would be some bad bearings wouldn´t that just like vibrate a bit more, and not stop the engine all toghether. Could something in the engine have taken damage when it heatsized? If so what is the most likely to have taken damage.
@@NorthSurvival From your description it does sound as though something has seized internally. Check the piston and and all parts connected to the crankshaft..
You showed that the belt wasn't going all the way to the edge of the pulley,saying that the extra travel would have been worth a few extra km/h. But you didn't tell us what to do to get the belt to travel the full diameter of the pulley. Could you fill that bit in,thanks.
You have several options. Trial with longer belts without loosing the low gear. Use shims to correct the front pulley spacing without changing the lock nut position on the thread.
Yes you can, I may do this for trial only and then move to having each roller of the same weight. Total of this combo is 39gram so divide by 6 to get each roller being 6.5gram. When 3 rollers are heavier than the other 3, the heavier will do all the pushing and wear very fast.
I have honda ruckus with NYC variator/ drive face and right now 6g Dr.pulley slider. I can't get the belt to get top of the variator. I've also tried 5.5g and 5g. What would you recommend to get the belt to the top of the variator?
Was the belt going to the top of the variator when the standard face was fitted? Pen mark the Variator face and rev it up on the main stand with the scoter securley fixed and in fron to f a wall so no movement. Does the pen mark get rubbed off all the way to the top? The rollers are most likely heavy enough to take the belt to 100% so it could be the belt length, the belt width or the rear pulley. When the rear pulley is fully opened ( top gear) is the belt at the total centre? Many questions to ask and answer to isolate what the issue can be.. Start now✌️
So I have a stage6 70cc kit and an exhaust, crank, and intake system and I also have a polini clutch, variator and clutch bell and I was wondering how do I find the perfect rollers, clutch springs and contra spring for my scooter because I am very lost atm
The easiest way to dial in the rollers is to make 1 gram changes from the original, so ride with originals and then change to heavier rollers by 1 gram. Now compare the difference bewteen the 2 different roller sets. Now try 1 gram lighter and between these changes which set has you at the best perfomance.? It is vital to fit an adjustable clutch or tighter clutch springs.
Very good explanation on how a varaitor works with different weight rollers. My question is, during your explanation I noticed that you are only using the round type of rollers. Can you please explain what the difference is between the Dr. Pulley brand roller weights. That have more of a cam lobe instead of just being round round. Like the ones you are using in this video?
Rollers and Dr pulley actually slide they dont roll. Dr pulley has a fixed sliding surface and at the same as the rollers, Dr Pulley have a very good method of action where the rollers can be used in different surfaces of the diameter. It all depends on the material the rollers/sliders are made of for longevity.
lighter rollers allows reduced load so energy to rotate is less and so rotation is quicker. Too light and the gearing will progress to slowly causing an over rev. It takes more energy to rotate the heavier rollers so the accelration is reduced. Top speed is created by optimising the roller weights.
Upgrade the engine capacity. If this is not an option allow the rpm to build before the clutch engages. Do this with lighter rollers, lowest gearing on the belt to variator position (use of shims) and later engagement of the clutch shoe, Use an adjustable clutch. So lighter rollers, adjustable clutch.
I bought the variator tool for my piaggio zip but now i dont know how much to tighten the everything? I dont have the tool that shows how much its tightent? Sorry for bad english
HI MATE CAN YOU TELL ME WHAT SIZE ROLLER WEIGHTS I NEED FOR 49CC DIRECT BIKES MOPED TO GET UP HILLS AND BANKS AND PICK UP MORE SPEED THANK YOU PLEASE KEEP POSTING YOUR VIDEOS THANK YOU
I am unfamiliar with this Brand and Model, but I would try a going for 1 gram lighter than the original rollers, tighter clutch spring set and Also look for an unrestricted CDI. Usually the 49cc 4T will accept the 75cc Kit and then your on your way👍
@@scooterstreetau THANK YOU CAN YOU SHOW ME IN ONE OF YOUR VIDEOS AND IF YOU DONT MIND ASKING WHATS BEST LED BULB I CAN GET SO I CAN SEE ON DARK ROADS BETTER THANKS ALSO I FIND OUT WHAT ROLLERS ARE IN NOW AND I LET U KNW IF ITS OK..
@@johnwhite3346 Watch these videos for the tips on changing rollers. We are not sure about the LED headlights... th-cam.com/video/2XRQ-5nqKlg/w-d-xo.html&ab_channel=ScooterStreet th-cam.com/video/M4TM120Cc7M/w-d-xo.html&ab_channel=ScooterStreet th-cam.com/video/ae44tbCJIdA/w-d-xo.html&ab_channel=ScooterStreet
Using a longer belt will help get you to a higher gear (top speed). You will be limited by the rear pulley, so use a bet that maximises the diameter of the smallest pulley. Do keep the same width on the belt, do not go wider..
I still don't understand the steps to try a suitable roller by combining light and heavy rollers. Please explain the steps, and what roller indicator is right for me. I weigh 172 pounds and the factory default rollers are 11 grams, the springs have been changed to 1000 rpm, but when I go up the hill my scooter struggles when I accelerate
Ok, When you have time to change and test ride you should begin. Basically all you do is start with 11gram rollers, mark the variator face with the black pen and fit 2000rpm clutch springs. Go for a test ride and note the performance. Go back to your garage and replace the rollers for 10gram and visually check to mark sure the pen mark has been rubbed away from the belt travelling to the top of the variator. Re-mark after each roll change and always check. repeat the same ride as the previous again noting the change from the first ride. The difference in the way the engine acclerates, holds speed and drops when throttle off shoud be noted. Find the best performing set of rollers weights for your setup. Once done you can experiment with hight tension Torque springs and clutch springs again note the effect each part has on the performance of your scoot. Make sublte changes for best performace.
what is the excellent combination of weight of of flyball if you want more torque because we leave on a mountanious area. i have only 110cc of scooter. thank you
Hi do you sell or know where to buy as im in sydney i have my first scooter its a scarabeo 200ie 2012 what do you recommend for better take off and do i have to upgrade the jet needle.
Just wondering if you have have ever had issues with removing the drive boss from the shaft ? I was doing the swap to 13 g sliders today, my variator backing plate is frozen behind the drive boss, I can’t get it to move. I was going to try a 3 jaw puller, do you know what size I should get ?
Hi at the moment I've just got a stock Typhoon which is deristricted. My daily travel has a lot of hills involved and was woundering if getting lighter rollers could help with that?
Hello, I just upgrade my artistic spec jog from 50cc to a 70cc kit. Wich set weight of rollers do you recommend me?. I have on the stock exhaust, I noticed to scooter is a little sluggish to get up and go. Thank you
Great video man, can you give me some advice on tuning a 4 stroke . Yamaha xmax 300 . Do you think a variator and rollers would give better accelration ? Do you have any suggestions on rolller weights .
Thank you for comment👍. Yes certainly start at 10% lighter on the roller weight, go for a performance variator which has specific rollers for Xmax and look to include an adjustable clutch system as they work in tandem. This will enhance the transmission performance overall. Def ask Yamaha about the ECU mapping, there may be a different mapping setting for higher performance.
I am guessing the Navi follows the PCX transmission, The PCX 2021 variator from Malossi is 5118776. If you check the spare parts and confirm against the original sizes and dimensions of the Navi you may find they are the same.. Do the research first😁👌
I have a Wolf Blaze 2 150cc. What kind of rollers should I get to get faster take off and keep maximum speed? I’m in Florida and average speed is about 45 so I want to get to at least 50mph rather sooner. TIA. Stock scooter except carburetor
Hello julleboy90, all the content is still very relevant👍. You use a shim to increase (spread) the distance between the variator and the fixed face fan. This allows the belt to sit at the lowest point on the front pulley. May be used when a different size belt is used, wider and longer perhaps.. we like to have the belt very ear to the outside of the variator to allow the highest gearing.
@Scooter Street ok, well, i only have stock, 4.6 and 6.5 gram rollers. And as far as the clutch springs go, I'm using the heavy yellow ones. I thought maybe i should use the lighter ones cause I'm only using the stock 50cc. I have the big bore 80cc kit, but it's still in the box.
Hello, i have a aprilia sr 50 2020 E4 with piaggio engine. The standard rollers on it are 7,2 or 7,5. I changed the rollers to 6,1 but it accelerates very slowly, like the engine revs a bit but i can reach max 45 50 km/ h and it takes a little bit more time than it took when i had the standard rollers
The scooter is designed to go slow according to regulations, it needs to be derestricted in order to gain more power and top speed. Changing the rollers is one part of the puzzle but the CDI/ECU will need mods and also the carby and def. the exhaust.
Yes, you need to make sure they all face the same direction, with the smooth (non beveled) side facing clockwise. Double check the direction with your manual. Also, I think my manual called them weights.
Good question! When rollers are manufactured the weighted insert slides into the outer shell. Some rollers have an end in which the weight enters and the shell has a capped end to stop the weight going all the way through the shell, this capped end is called the 'closed end' and should always face away from the direction of rotation when placed in the Variator. Other rollers are glued and do not have a closed end so it will not matter. So always look for the closed end when placing the rollers.
My back wheel moving before I even rev which I think means the clutch engaging way to quick what can I check and do to stop that light or heavier weights or stronger or weaker clutch springs
Does it make the performance low? If you want to delay the contact of the clutch you should fit an adjustable clutch so you can fine tune the engagement of the clutch. We use the Polini G3 clutch, wonderful product.
@@scooterstreetau clutch grabba good but it bogs out to fast so I’m Assuming based on what I learned and know it could either be my contra / torque spring could be be stronger and or my roller weights lighter right
One more thing so a wiring video for all the people who have trouble I always get questions about wiring so I made my own diagram if u wanna use it for the vid I feel it’s pretty simple and wayyyy easier to read then the technical manuals
I put on a 70kit and pipe and changed the carb (12,5 original) to 82 jet, i have 4,6g and it goes great on idle but if you go for full throttle it revs up to 4k and the wheel doesnt even turn around, please help
4.6 is probably too light. Go back to standard rollers or only 1 gram lighter. Now get the carby jet correct first and then come back to the transmission.
Only if the slider fitted say they do, in many cases not. Read the description of DR Pulley. Some models they are fantastic and optimise the variator top speed potential. It depends on so many things, is the factory variator restricted?
@@scooterstreetauyes I believe the variator is restricted , I was thinking about grinding the roller pockets out to get the belt to move up the variator.
You have such great content on you chanel, I shreaded my CVT belt on my gy6 50cc 4 stroke, and replaced it, the belt had no size on it so I think it small case so I went with 669x18x30,,,put everything back together and it wont start,,,replaced battey, coil, plug ,CDI, nothing,,,,could a wrong size belt prevent it from starting? Could I take the belt off and try to start without it on, so frustrating at this point, any advice would be awsome,, TY again!
Thanks for great comments. Sounds like something is bound up. You need to reset the variator, when the belt blows apart the variator usually will get stuck in high gear. Have a good look through the transmission as well, pieces of blown up belt often work their way into crucial moving parts like the pinion gear, etc.
OK I know after market variators are different in its ramping. I bought a malossi variator with 9 gram rollers for my kymco super 8 50cc 2t. I found out stock is 8 gram rollers. I've bought my leo vince exhaust. How would 9 grams be in my scooter
Try the 9 gram Malossi recommend, you may find it limits the initial rev. So move the a 7.5gram set. You need an exhaust for the Super 8 because they are not so super in their speed.
Ok I have Leo Vince exhaust, malossi cut out filter for air box. Could you please tell me what size main jet I need for kymco super 8 2t 50cc. I'm in toowoomba so a little different altitude
Just tuned in and subscribed thanks for the very good, informative video. I've got a Sym Jolie scooter where would you recommend I buy my bots from from Australia I want to support the local suppliers so any advice would be greatly appreciated. Thanks again for the vids
Hi, I have taken off many variatiors, Im tryn to get the variator off of my prescott 50i gy6 and the nut will not come off, I tried my usual torque wrench that always works and my buddy came by with large set of socket wrench and he couldnt do it, have you had a situation where you cant get the variator off and what did you do? Id hate to not be able to upgrade this scooter TY again!!!
That sounds pretty frustrating! Not familiar with that particular make but the GY6 engines obviously all share a fair bit of commonality. I would recommend a rattle gun/torque driver with minimum 350-400Nm torque. In most cases you'll need a fair bit more torque to undo a factory nut than to retighten it. They make have used some thread lock in the factory as an anti-tamper, or it may just be corroded or stuck on. If a rattle gun still wont get it off, I'd recommend taking it to a mechanic.
Hey mate, thanks for the video. I watched a few and got more confused than I was when I started. Your video was very clear, mate. Thanks a lot I think I know what to do now actually. Cheers.
Yes you can mix any combination, 3 x 5.4 and 3 x 4.7 is fine (total of 33.3grams divided by 6 = each roller should be 5.55g), but remeber we only do this to find the best TOTAL weight. Dont leave them combo'd.
@@scooterstreetau Hi Found that the 4.7g rollers worked best for me after mixing.. Regarding the variator the belt is to the outside edge of the clutch but i still have about 16mm on the variator before it gets to the outside edge is there anyway i can use this 16mm up?
This is a very technical answer to estalish what is not allowing the belt to travel. @@richardd9867 If you keen to fnd out this is an option: www.scooterstreet.com.au/product/online-scooter-support/
THanks for the support and comment, MZ. Your Address doing 120kph is very good for the UK110. I would leave it alone, already great✌ Most likely the belt is moving to the top gear and the front variator..
Does it matter how the rollers go in like it what direction? I noticed one side is showing metal, the other plastic, should it be facing a certain way? TY for your videos
The metal end that you mention is the end in which the metal weight is inserted into the plastic roller housing. The force of the spinning variator can push the metal insert out of the plastic housing if laid into the variator in an anticlockwise direction. So the plastic cover end of the roller should be facing clockwise in the variators fitted position.
hi, i have yamaha jog r with 70cc malossi kit. clutch spring malossi and 17.5 carb and performance exhaust but its broken and my problem is when i start riding the scooter takes too much rpm to move but when it starts moving its fine is it the roller or the broken exhaust? (sorry for bad english)
I’ve got a 2021 znen 50cc. I could be running flat at 35-40mph and hit a hill and drop instantly to 10mph. I weigh under 200lbs. What would be the best set up for this transmission-qmb139 engine?? Any suggestions would be appreciated. Thanks guys.
The hill is effectively adding more load to the engine so the transmission should automatically lower the gearing. You can better achieve this with lighter rollers in the variator and a heavier torque spring in the clutch but all must be balanced.. Take care not to go too far with these adjustments because ultimately the engine is not producing enough power, consider a big bore kit.
@@scooterstreetau t.q...i did variable weight set of rollers of course it give different responsive..now i understand how to tune base on your advice t.q sir..
@@scooterstreetau what kind road condition should i observe the engine to hold max hp..i mean when the road slight downhill rpm can go up 9500rpm for the heaviest roller i can get 15g....stock rollers 11g
I have a 2012 Piaggio Typhoon 50cc 4T. What do you recommend to upgrade the rollers, clutch, etc...in order to get faster of the line and going up hill? I want to modify these items to get more torque and speed. Do you recommend replacing the carburetor kit? How can I deactivate the restrictor?
The small engine 4 stroke is difficult because it simply produces very little power. Try lightening the roller weight by 1 gram for each roller and use an adjustable clutch to fine tune the engagement of the power to the wheel. Check for derectrictions in the trasmission, carby and the exhaust. Fit a Malossi single air filter and raise the main jet 1 point.
@@scooterstreetau I've been watching several of your videos with these upgrades. Question is, Is the Piaggio 50cc 4t any different from the Fly you show or the Vespa? Are they basically the components?
hello, I really like how knowledgeable you are with the aprilia sr50. my year is 1999 and 2000 carb model. I'm interested in making it rear facing carb but not sure of the modifications I will or might need to do. I had one before but I had stage 6 rear intake with 28mm pkw carburetor. I'm not sure what mod if there was one to make this setup work. can you help me figure out this? I want to duplicate what I had. just not sure of the frame modification. do I need to do this?
We suggest that you trial different weights to get the bet performance for your set up. Once you find this best performance weight, then find the total weight of all of the rollers and divided this total by 6. This is the weight that each roller should be. If an 8 roll variator then divide by 8.
thanks bought a DLH variator for my nouvo elegance 135..couldnt figure out why it came with 3 10g 3 11g 3 12g plus three red springs.being 200lbs the 10 and 11s work great..thanks
When it comes to replacing the variator rollers then many mechs use grease on rollers & they say that it'll make scooter noise less. But few of them strictly prohibits of using it as it's the dry clutch thus no grease is needed. What is the correct method according to you in gearless scooter. I've got a Honda Scooter that's causing vibrations when start accelerating it from 0 then after reaching 5miles per hour all vibrations disappears. But at every stop & go, it's visor & body vibrates which is problematic in slow traffic. Mech saying that variator rollers needs to be replaced & he's suggesting me to grease the new rollers before putting in. It's a big confusion😢
What is correct is what you find the best outcome for you. We never use grease in this area unless the variator is sealed and therefore requires grease. Find out why the vibrations and correct this issue instead of a band aid fix. Again, find what is best for you my friend👍👍
@@abhimd3455 Some larger capacity scooters come with sealed variator, they are sealed with grease inside. The grease is inside the variator and captive by orings and seals so the grease does not venture out on to the belt and dry faces. Grease is also applied to the shaft and has an o'ring to keep the grease in the lubed section.
@@scooterstreetau Thanks you so much for clarification. My Honda Activa 5g has 110cc engine & basically comes with an open variator without any grease as I may see when opened it for very first time. Thanks again
Hi \ thank you for this Great video I have Yamaha majesty 250cc Scooter can I mix 3 of 13 gm light rollers with his heavy original 3 of 18 gm or this is big difference!!? Can you advise me what is the best choice please ?
Your welcome, thank you. If the dimension of the roller is the same and only the weight is different then YES. BUT We use this combination method to find the correct weight for testing only. Once we have found the correct overall weight we prefer to use all rollers of the same weight. example: If you have 3 x 13g = 39 added with 3 x 18g = 54 then the total of all = 93g. Divide the total weight by the number of rollers, in this case 6 and use 15.5gram weight for all of them.👌
@@scooterstreetau Will I'm always use the original 6× 18g but I feel the Scooter heavy to move for the first moments thin will be normal Thin I got to use 6×13g rollers but not a very good results make to me ! high Rpm and high engine sound I think the engine loose some power in this case !!
Hi ! Impressive video. I have a question . I have a sym hd 300 , polini variator 14g rollers and the blue hard contra, also free dna air filter . The manual says that at 8000rpm max h.power. the rpm has increased from before , and 0-100 very fast but then drop , and the max speed comes vary vary latter and the rpm gies to 8100-8200? What mod would you suggest in order to reduce the drop at higher speeds? And do you suggest a aftermarket muffer?
Thank you.. Try varying the roller weight, Go heavier and then slowly reduce weights, so you can see what the change makes on the road. The spring, try the original spring and then again varying the rollers.
@@christos5635 Aftermarket exhaust: Great sound, more noise awareness for drivers. At this cc it gives good mid-range power and can add to the top speed, you need the variator/transmission tuning and you have the variator.
They are developed to increase the effectiveness of the transmission by maintaining optimal RPM. With different weights the variator can be fine tuned. This can increase the acceleration and also top speed. The ramp slot that the rollers are housed have a different angle, some kits have upgraded the size of the guides with smaller tolerances. Often the performance variator is cheaper than the OEM. Saying this, there are cases where the factory Variator will have the same performance as the aftermarket Variator.
Most scooter parts from China labeled high performance are just “cheap replacement” parts. It’s more important that your transmission is properly tuned to keep engine rpm in the power band. The physics is the same no matter how much you paid for your variator.
I think i am a little confused...If i am right you mean that using lighter rollers we should have more torque and if we use heavier rollers we have more speed. Am i right?
It is so much more complicated than that, the best way to gain an understanding is to fit different rollers weights and see how they effect the movement of your scooter. So try a lighter weight and test ride the scoot, now increase the weight and test again to get a quick answer as to how these change the acceleration and higher speeds.
Hi great video. I used NCY 12g rollers and managed to get my Honda Navi up to 52mph. But at the top end speed I’m getting a vibration, any thoughts on why? I did notice the 12g rollers have different looking sides on them. Do you know if they all have to go in the same direction? Rollers did not come with any directions and can’t seem to find any information or videos on it. I’m thinking I’ve reached peak performance with the 12g rollers but not sure. Any thoughts or suggestions Thank you
Ahhh Walter what have you done Mate..... Tip: Break off the opposing blade, now remove any rough edges on the broken blades (use sanding paper) to make sure no loose pieces would break away during running. Use the correct tools , don't jam anything in there that may damge the blades, we have all done this at one time😁👌
I really appreciate your explanation on the CVT. Can I please ask some advice? Sorry in advance for the long message. What if I have a Chinese GY6 50cc engine with 80cc bbk and aftermarket exhaust with Keihin carburetor and higher gear ratio to get better top end. I haven't done a thing with the CVT except for variator which wasn't much. I think I may even be running my stock rollers again. I know that was stupid not to do anything until now but should I use the 1500 or 2000 spring and what size sliders or rollers should I be running? Also does a performance clutch with larger pads make any performance difference compared to a new stock clutch or should I just concentrate on the springs and weights? I am experiencing a big from like 15-30 mph and it seems like I should be getting a better top end speed. I'm currently getting about 42 flat and 50-52 downhill lol. Can you please offer me some advice? I would truly appreciate your help brother!
I would try some lighter rollers and replace any worn parts on the engine including the transmission. Look to change the clutch springs to 2-3000rpm or even higher if the engine is revving. You will need to check the variator top speed by pen marking the face and riding. This will guide you as to which rollers, this is trial and test, try lighter rollers and then try heavier.. The performance clutch is good but buy quality and try for an adjustable clutch like Polini G3. Check the main jet on the carby make sure there is enough fuel and the engine not running lean..
@@scooterstreetau thanks so much for replying! I asked several and no one would answer except for you. So I'll try the 2000 rpm spring and some 6 gram Mr. Pulley sliders? You think this should be sufficient and then try the marker deal on the variator? Do you know if they make the polini G3 clutch for a 50cc qmb139 Chinese motor?
@@mikecuev820 You are welcome, thankyou for supporting our Channel🙋♂️. Yes, try the tighter springs but the engine must be revving to engage with better acceleration. With the rollers/Sliders you must trial different weights to move to a better performing variation. So try 6G and then 6.5G and so on until you have the best performance.. Yes Polini do make a suitable clutch..
Many things to try: After each change test again. Change the rollers to heavier. Replace worn parts and service variator and clutch. Use a performance 9or longer) belt but not Kevlar.
I have a super 50 , 50cc scooter I install mine with slider roller weights 8 gram . The acceleration was smooth but when I go about 35 or so I can feel the belt is that bad or should I change it ? I also didn't upgrade my clutch just got a new roller weights
In Holland the variator has a backplate that acts asa restrictor ,it limits its expansion. I read that this piece can be removed. Any experience with that? Good video btw. Thanks. :))
How do you get the belt to ride higher on the pulley for higher top speed? Everything working well, reving to 7k but top speed seems artificially limited and belt isn't riding up to the edge of the pulley. Advise?
What make and model do you have? It heavily depends on the make/model of the bike - it is slightly complicated. As a general rule, you can install a slightly longer belt to achieve this, but only on bikes where the rear pulley is not closing all the way at idle, and where the factory belt is too short (which is the case on some 50cc 4 stroke models, as well as some of the Euro 4 Piaggio Typhoon and Aprilia SRMT 50 models). If your rear pulley is closing all the way at idle, there isn't much you can do. If you were to install a longer belt, the belt will still sit in the same position of the rear pulley due to the belts width. If you install a longer and wider belt, it will travel further up the rear pulley - but due to the additional width it will also sit further up the front pulley, essentially cancelling out any positive effects.
@@scooterstreetau Thanks! It's not closing all the way - I have to squeeze the clutch to let the belt down in a little just to get it (very tightly) fit over the variator shaft. Where is a good source of belts? I have a belt marked as a 682 20 and would like to go up to what - 692 or more?
@@Cliflyri When you say squeeze it in..to fit it over the variator shaft. This is normal. You need to check the belt position on the rear pulley at idle when the engine stops. Watch more of the Variator playlist videos. Also, Belt manufacturers make many different sizes. Malossi make a 705mm length belt (PN 61 7221) so check them out and find a belt that may suit.
Dr Pulley Slides are a great example of having the Closed End. So if we have the variator laying on a flat surface, as we place the Sliders into the Variator slot, the DR Pulley writing will face Anti-Clockwise.↪ watch from 7:40
Great tutorial. I have changed mine to molassi Multivar variator. The rollers are 8 gr. Feel the rpm is high before the bike move. Should I be looking into the clutch springs
@@swimwithcoachraven1532 ok well you are on the right track, RPM higher with a later engagement of the clutch to boost from the start position. Tighter clutch springs will allow the rpm to build, so give the springs a go.
Straight out SUB, Love it😁. What size are your current rollers? Let's say 7.5 gram, try 6 gram and then make small weight adjustments from there. Too light and it will not maintain the pull and over rev so trial and test🎉
Rollers at 6 gram, now this may vary and you will have to test with lighter roller (5g) and progress to a higher weight. Clutch springs, go to a medium tension of approx. 2500-3000. 4T 50 don't rev so set a realistic expectation. All the beast👍
I have no firm answer. You must trial different weights to find this out for yourself. The standard rollers will give the highest top speed but may not allow the best acceleration. A slightly lighter set of rollers will also give the highest top speed and the acceleration will start to increase.. If you reduce the weight by small increments you will eventually find a weight that will no longer get you to the highest top speed (they will be too light to drive the variator to highest belt position). So you need to find the lighter set of rollers that increase the acceleration and also still provide the highest top speed. This will be the optimal set. At a guess try 12-15% less than standard.
Great video!! I have a question I run a piaggio typhoon with 70cc kit Main carb with 74 jet Malossi exhaust Malossi air filter But the problem is that when I go to a big hill it is like the spring can’t change the transmission (I have factory heavy rollers and factory soft spring from 50cc) is it better to leave the rollers and take a harder spring ? Or is it going to put to much pressure on the belt? If I change the rollers with lighter is it going to lose grip on the belt ? (Sorry for my English ,I hope I am understandable)
Well Thank you😁 we appreciate the views and comments.. A few things, make sure the carby is tuned, the air-mix screw all the way in and then 1 single turn out, set and forget. Is the jet size large enough? Is it running lean? The factory rollers are 7.5. Try a 7.2 or 7 Gram set ensuring the belt is always reaching the outer. Diameter of the variator. I suggest this because it is easier to work out the solution by changing the rollers instead of the Torque spring. By the way make sure the clutch twist rotation is smooth and not stepped.
@@scooterstreetau I have 6 gram rollers I have some holes to the filter box also … And the air screw is half open I will try Malossi green spring in order to help it with the transmission….if it doesn’t change I will buy new even lighter rollers to try again. My plug color is brown
@@flawlessmusic8850 For variator testing , remove 2 rollers to see if it makes a difference, there are many ways to test with the parts that you already have, I am not to sure about holes in the airbox unless you have the carby tuned to suit.. too much air can lean the mix and the power is reduced and it bogs the engine under heavy throttle..
@@scooterstreetau Ok perfect I will try removing rollers Thank you !!! I have seen all your videos on your Chanel 😂 I wish I had Malossi piston set but I have only Malossi head with a cheap 47 kit 😂
I just purchased a 2019 metropolitan, how can I make this scoot to hit 45 mph and get there quickly? It's completely stock bought it with only 15 miles on the odometer. Currently it hits 37-38 mph with me weighing 205 lbs.
@@scooterstreetau I’m in Virginia Beach va I don’t think we have an Eton dealer around here but I’ll check. Thanks for the info I’ll start looking for adly rear shafts and see if they will work.ty
Hi Scooter street! I recently bought a china 2stroke scooter. It had 4g rollers when i got it, they were worn, with flat spots. I replaced them with 6g rollers, it had poor acceleration and top speed then. Now i put in 5g rollers, it seems to have good performance now, but im afraid it is reving too high at high speed. It has leovince exaust on it and stock 50cc cylinder. Can scooters get damaged from reving too high? I dont know how much rpm is normal, no experience with scooters
No, it cant really rev too high so don't worry about high RPM. 2 stroke engines are high revving engines, a near standard scooter such as yours cant really over rev to the point of damage unless there is a serious mechanical issue. You should try the marking of the variator to see if the belt is reaching the top of the variator. Also a heavier torque spring will counter the heavier rollers. Do some trialling and come out with the best outcome for the transmission..
You need to look for a restriction. Some cases the belt is too short, some cases there is a restrictor. I have a video coming this Saturday that discusses the Kymco restriction. Sub so you get the notification👍
Hi Scooter Street, I am Marc with 70 kilograms of bodyweight, I just want to have an advices from you with my Yamaha 50cc scooter set-up upgraded into 47mm Block and Re-chambered Cylinder Head, 70-90 V8 exhaust Pipe, 24mm Carb, Kitaco Racing CDI, 13:34 Secondary Gear, Racing Coil, CT manifold with .35mm Polini Petals, 1000RPM Center Spring and 1000RPM Clutch Spring, Cheap Racing driveface and Pulley set, stock Clutch Lining and Bell, my question is what roller weights should i try to reach the right acceleration and Top/High?
Hi Marc, difficult to have an exact answer. Like all the other variator questions the best answer is to start at the factory rollers and reduce from there. There are instances where the roller weights are increased but usually lighter will be more effective. Trial and testing.
Only grease the rollers if recommended, there are recommendations in some of the lager capacity engines where the variator is sealed with rubber seals to keep the grease in the variator. You do not want grease to contact the belt of slide faces.
Ok well I lightly greased the rollers because when I pulled out the original one, I didn't really feel any grease but a little can't hurt to keep things smooth.
@Scooter Street I hardly put any on there like so little it like just enough to hardly tell . The grease I got from polini was for filling in tiny hole in the rollers. If there was any.
I have a 22 Honda Air Blade 150 . It came with 16 gram flyballs (rollers) I put in 20 gram , then I removed the air baffle and tube in the filter casing , took it to shop remapped the ECU and oh boy what a differance .Thiking about putting in a little heavier variator spring . It's not for racing but just cruieing and towing a small cargo trailer .
@@scooterstreetau AS for speed I don't know have not tried that yet . Before is would be hard to spin tire in dirt , now it will put the rubber to the road ,the pick is really goo . Sure looks like I will be going to 20 gram sliders .
@@5hvnjyybb37 The only way to Derestrict the scooter is to remove them all. There are no shorter cuts, the removal of restriction is the most simple way.
@@scooterstreetau hai,i wana ask again about my yamaha bws 100.Which variator rollers weight can i put to increase speed & acceleration since u said stock rollers 8.3g each 🤔
@@abhha7453 if you use very light rollers the belt will not progress to a higher gear when the RPM increases and the result is an over reving engine with no speed increase.... As mentioned above try a lighter set than the original 8.3 gram. Why don't you try 8 or 7.5 gram.. trial different weights as this is the best way to learn to achieve the result you need... watch the above video, all is explained..
I have an Aprilia sr 50 with a tuning exhaust and im driving around 80km/h ( 50 miles an hour) and i am not sure what rollers i should get, do you have a slight clue?
Hi guy, i have some question: -what is your recommend clutch shoe material for stop-and-go city riding!? -stock clutch shoe (soft) and carbon-kevlar shoe(hard), which one hit the bell rapidly, and give the best friction force!? -if i choose the more friction shoe, i must choose lighter roller weight to avoid the belt from slip, isn't it!? -for normal riding everyday, we must take off at high/full throttle or just slightly throttle!? Thank you 👍
-Clutch material: Standard clutch is fine, always maintain and clean the shoes and bell housing, upgrade to a higher class when wear is present. -Stock clutch shoe: Street spec or Race spec! Choose what you need for the riding type your doing. -The trans should be balanced, example: if race class go with race class for the entire system. The roller weight determine rpm and also top speed. - Throttle: Depends on the scooter cc. For me on 50cc it is always full throttle and control with the rear brake.
Not essential, changing the spring tension determines at what rpm the clutch will engage. Once you are happy with the roller weight then you can set the clutch engaging.
Subscribed!
A Sub helps us out and assists in running this Channel, So we greatly appreciate your SUB 🙌 thank you.
New to the scooters here. My son has a stock 2013 quattronove 50x, we are wanting to keep it stockish but would like to make it quicker than 50km/hr. Would this clutching do this or not?
First explanation I’ve seen that completely and clearly describes what a variator is doing and how roller weight affects the rpm at which the pulley’s effective diameter changes as well as the rate at which that change takes place all else being equal. Excellent video! Subbed and liked.
Thanks for the acknowledgement Pete😁
Yup.
For a year now, I've known how to change a belt and assemble a varitator. But I was in the dark with how it worked. I watched so many videos explaining it but your style of explaining how it works was super easy to understand. Thank you for making this video, keep going!
Thank you for your support🛵🤩
This is how an instructional video is done - clear, to the point and you know what you’re talking about. The Americans just waffle on and on and on for ages and say very little. This is a breath of fresh air.
I just subscribed . Thank you for doing this so well
Very much appreciated Sean, thank you. Fan of Sean the Sheep.
American carry your economy blow me
@@elizabethmcheffey8699 Americas economy will collapse in your lifetime under the weight of 29 Trillion Dollars (and rising), you cant even afford the interest repayments on 29 trillion dollars, the ignorance of America is impressive. You could try to pray the problem away hehehe. The rest of the world knows this and is laughing at America. outside America, you are the butt of all jokes. Land of the fleeced home of the slave. good luck with that
🦅🇺🇸🦅
Thank you for doing this video! I’m just learning as I go and everytime I ask another rider.. they always say it’s easy but never really explain it like the way you just did! Thank you again
Thank you, that is great. Glad you liked it.
This is a very helpful explanation. Thank you. I just swapped out my variator and clutch and rollers for sliders without really knowing why.
Cheers Jim, always helps with another's experience.👌
Hello, I have a problem, I have a Peugeot Speedfight 1 100cc that recently seized up/heat seized. It was not tuned. I then changed the cylinder, piston etc. It now starts up right away, but after a while it dies all of a sudden (as if you had turned off the key) and then I can start it right up again, this usually happens when I go over 60 km/h or uphill.
When I changed the cylinder etc, I also cleaned everything thoroughly, such as the carburettor, intake, new air filter, new fuel filter (there was no fuel filter before) new spark plug. I also removed the oil pump and put a metalplate with a gasket over the hole instead, I now mix the oil directly into the gasoline.
Some other info that might be important.
- When I drive over 60 km/h, it starts to make a noise from the variator (CVT), it´s sounds quite a lot.
- When it died, I tried to start it again while it was rolling and then it started right away, but it made a noise from the variator, like something "let go" that had been seized up, like a rubber sound, maybe from the belt.
- The variator belt touches the variator cover on the inside and has grinded a cut in the metal.
- In the variator, where the weights are, the belt does not go down to the bottom of the wheel.
- The clutch bell had turned blue from the heat.
- The place where the connecting rod attaches to the crankshaft had turned blue from heat.
- There was no fuel filter on it before. But i now saw there is an internal fuel filter in the gastank, can it affect the vacuum if you now have 2 fuel filters.
Please help me.
Regards
Andree.
Did you find the cause for the Seizure, prior to riding? If not it should be investigated.
@@scooterstreetau No i did not, i tested the oilpump and it worked, but i am not sure about the flow. Anyway, i removed it and put a plate over the hole, and now i use premix. What could have caused the seizure then, all i can think of is lack of oil.
@@NorthSurvival At times as a bike ages the air and fuel flow changes and you see unbalanced mixtures, there are many variables here, poor air filtering, weather changes, rubber perishing, blockages etc. As a precaution I check all of the systems and their associated parts and also richen the fuel during testing..
@@scooterstreetau I took it for a testdrive today and after a while it stopped, so i removed the variator cover to check how it looked and the axle where the weights are that goes into the engine was stuck, so i turned it a bit and it let go, and after it was a bit hard to start again.
What could this be? I checked the fuel line and the vacuum valve that goes into the gastank and they worked, if it was some bad bearings in the engine would that be enough to stop the engine while running? If it would be some bad bearings wouldn´t that just like vibrate a bit more, and not stop the engine all toghether.
Could something in the engine have taken damage when it heatsized? If so what is the most likely to have taken damage.
@@NorthSurvival From your description it does sound as though something has seized internally. Check the piston and and all parts connected to the crankshaft..
Had to watch an AU video to get a good explanation while sitting in EU. How is that? Thanks for the clear explanation!
What ever the reason, glad to have your viewership👍
You showed that the belt wasn't going all the way to the edge of the pulley,saying that the extra travel would have been worth a few extra km/h.
But you didn't tell us what to do to get the belt to travel the full diameter of the pulley.
Could you fill that bit in,thanks.
You have several options. Trial with longer belts without loosing the low gear. Use shims to correct the front pulley spacing without changing the lock nut position on the thread.
Great video mate, really love the explanations. Any tips on tuning the springs?
Well thank you🦘. The torque springshould break late and over compensate the roller weight when the throttle is released.
Can i do 8gx3 and 5gx3 rollers or is the difference to big?
Yes you can, I may do this for trial only and then move to having each roller of the same weight. Total of this combo is 39gram so divide by 6 to get each roller being 6.5gram. When 3 rollers are heavier than the other 3, the heavier will do all the pushing and wear very fast.
@@scooterstreetau Thank you for the answer :)
@@ChrizzOG 👌
Do you know why my scooter wouldn’t wanna shift in the 2nd gear, like i take off then it just revs and hits like 35 40 km/h and revs to much
Are your rollers too light, what have you changed recently? Check the variator, belt and rear pulley function.
I am so happy to see that you did not apply grease to the rollers. Many youtubers incorrectly do that.
Great point! No grease unless there is a Sealing O'ring.
What g would u recommend for a 60kg person
Completely depends on the engine set up.
I have honda ruckus with NYC variator/ drive face and right now 6g Dr.pulley slider. I can't get the belt to get top of the variator. I've also tried 5.5g and 5g. What would you recommend to get the belt to the top of the variator?
Was the belt going to the top of the variator when the standard face was fitted? Pen mark the Variator face and rev it up on the main stand with the scoter securley fixed and in fron to f a wall so no movement. Does the pen mark get rubbed off all the way to the top? The rollers are most likely heavy enough to take the belt to 100% so it could be the belt length, the belt width or the rear pulley. When the rear pulley is fully opened ( top gear) is the belt at the total centre? Many questions to ask and answer to isolate what the issue can be.. Start now✌️
So I have a stage6 70cc kit and an exhaust, crank, and intake system and I also have a polini clutch, variator and clutch bell and I was wondering how do I find the perfect rollers, clutch springs and contra spring for my scooter because I am very lost atm
The easiest way to dial in the rollers is to make 1 gram changes from the original, so ride with originals and then change to heavier rollers by 1 gram. Now compare the difference bewteen the 2 different roller sets. Now try 1 gram lighter and between these changes which set has you at the best perfomance.? It is vital to fit an adjustable clutch or tighter clutch springs.
@@scooterstreetau ok thanks this is very helpful
Very good explanation on how a varaitor works with different weight rollers.
My question is, during your explanation I noticed that you are only using the round type of rollers. Can you please explain what the difference is between the Dr. Pulley brand roller weights. That have more of a cam lobe instead of just being round round. Like the ones you are using in this video?
Rollers and Dr pulley actually slide they dont roll.
Dr pulley has a fixed sliding surface and at the same as the rollers, Dr Pulley have a very good method of action where the rollers can be used in different surfaces of the diameter. It all depends on the material the rollers/sliders are made of for longevity.
Wonderful explanations..so if i am to understand..how will lighter weights vs heavy weights affect top speed vs acceleration? Can u help me with that?
lighter rollers allows reduced load so energy to rotate is less and so rotation is quicker. Too light and the gearing will progress to slowly causing an over rev.
It takes more energy to rotate the heavier rollers so the accelration is reduced.
Top speed is created by optimising the roller weights.
What advice could you give me please for more more and speed talking off please on a gilera runner 125st thank you
Upgrade the engine capacity. If this is not an option allow the rpm to build before the clutch engages. Do this with lighter rollers, lowest gearing on the belt to variator position (use of shims) and later engagement of the clutch shoe, Use an adjustable clutch.
So lighter rollers, adjustable clutch.
I bought the variator tool for my piaggio zip but now i dont know how much to tighten the everything? I dont have the tool that shows how much its tightent? Sorry for bad english
Tighten the nut and buy the tool soon so you can test the tension.
@@scooterstreetau whats the name of the tool? And where do i buy it also is it really needed? What if i just tighten it until i feel resistance
@@numankralj You can use a torque wrench, rattle Gun or hand wrench. Do it once do it properly👍
First 2 mins on your channel and I already know we are gonna be friends. Lol
Haha thats what we like, thank you mate😉
Excellent! Clear and simple 👍 love all your videos and your actual real life knowledge is clear too 👌 thank you 👍
Thanks James. Appreciate the support of our Channel.
HI MATE CAN YOU TELL ME WHAT SIZE ROLLER WEIGHTS I NEED FOR 49CC DIRECT BIKES MOPED TO GET UP HILLS AND BANKS AND PICK UP MORE SPEED THANK YOU PLEASE KEEP POSTING YOUR VIDEOS THANK YOU
I am unfamiliar with this Brand and Model, but I would try a going for 1 gram lighter than the original rollers, tighter clutch spring set and Also look for an unrestricted CDI. Usually the 49cc 4T will accept the 75cc Kit and then your on your way👍
@@scooterstreetau THANK YOU CAN YOU SHOW ME IN ONE OF YOUR VIDEOS AND IF YOU DONT MIND ASKING WHATS BEST LED BULB I CAN GET SO I CAN SEE ON DARK ROADS BETTER THANKS ALSO I FIND OUT WHAT ROLLERS ARE IN NOW AND I LET U KNW IF ITS OK..
@@johnwhite3346 Watch these videos for the tips on changing rollers. We are not sure about the LED headlights...
th-cam.com/video/2XRQ-5nqKlg/w-d-xo.html&ab_channel=ScooterStreet
th-cam.com/video/M4TM120Cc7M/w-d-xo.html&ab_channel=ScooterStreet
th-cam.com/video/ae44tbCJIdA/w-d-xo.html&ab_channel=ScooterStreet
@@scooterstreetau OK THANK YOU AND I WILL ALWAYS WATCH YOUR VIDEOS..
@@johnwhite3346 We love the support, thank you🙌
Hi do you need a longer drive belt used with a larger d.I.a. vari to allow for full shift and top speed. On a gy6 4t. 87mm.stock vari
Using a longer belt will help get you to a higher gear (top speed). You will be limited by the rear pulley, so use a bet that maximises the diameter of the smallest pulley. Do keep the same width on the belt, do not go wider..
I still don't understand the steps to try a suitable roller by combining light and heavy rollers. Please explain the steps, and what roller indicator is right for me. I weigh 172 pounds and the factory default rollers are 11 grams, the springs have been changed to 1000 rpm, but when I go up the hill my scooter struggles when I accelerate
Ok, When you have time to change and test ride you should begin. Basically all you do is start with 11gram rollers, mark the variator face with the black pen and fit 2000rpm clutch springs. Go for a test ride and note the performance. Go back to your garage and replace the rollers for 10gram and visually check to mark sure the pen mark has been rubbed away from the belt travelling to the top of the variator. Re-mark after each roll change and always check. repeat the same ride as the previous again noting the change from the first ride. The difference in the way the engine acclerates, holds speed and drops when throttle off shoud be noted. Find the best performing set of rollers weights for your setup. Once done you can experiment with hight tension Torque springs and clutch springs again note the effect each part has on the performance of your scoot. Make sublte changes for best performace.
@@scooterstreetau I see...Thanks for your advice 🙏
Thanks for watching👍@@langitbiru-y5m
what is the excellent combination of weight of of flyball if you want more torque because we leave on a mountanious area. i have only 110cc of scooter. thank you
You would nee higher rpm and a variator that is responsive to quick load changes. Increase the torque spring tension and adjust rollers as required.
Hi do you sell or know where to buy as im in sydney i have my first scooter its a scarabeo 200ie 2012 what do you recommend for better take off and do i have to upgrade the jet needle.
Fit a Variator to the Scara, works realy well. We sell parts for Scara. 200.
Just wondering if you have have ever had issues with removing the drive boss from the shaft ? I was doing the swap to 13 g sliders today, my variator backing plate is frozen behind the drive boss, I can’t get it to move. I was going to try a 3 jaw puller, do you know what size I should get ?
Sounds unfamiliar, once removed replace the boss and the ramp plate. investigate the cause.
@ Drive boss won’t budge , I think maybe it was over torqued at the factory, it’s 2022 with only 1300 km , so definitely not age related.
My question is, which roller weights give a higher top speed with weaker acceleration? Heavier or lighter than OEM?
If the belt travel is at highest potential then heavier rollers will make no difference.
Hi at the moment I've just got a stock Typhoon which is deristricted. My daily travel has a lot of hills involved and was woundering if getting lighter rollers could help with that?
Certainly you should trial some different sets of rollers, The stock usually has 7.5 gram so try the 6.5 g set and note the difference on the hills.
Hello,
I just upgrade my artistic spec jog from 50cc to a 70cc kit. Wich set weight of rollers do you recommend me?. I have on the stock exhaust, I noticed to scooter is a little sluggish to get up and go.
Thank you
Test the rollers at 1 gram lower on each roller. Did you adjust the carby main jet?
Great video man, can you give me some advice on tuning a 4 stroke . Yamaha xmax 300 . Do you think a variator and rollers would give better accelration ? Do you have any suggestions on rolller weights .
Thank you for comment👍. Yes certainly start at 10% lighter on the roller weight, go for a performance variator which has specific rollers for Xmax and look to include an adjustable clutch system as they work in tandem. This will enhance the transmission performance overall. Def ask Yamaha about the ECU mapping, there may be a different mapping setting for higher performance.
@@scooterstreetau cheers mate , appreciate it
@@kryptonitefitness Welcome.
Do you know what kit will fit a 2022 Honda Navi 100cc Scooter. Thank you!!!
I am guessing the Navi follows the PCX transmission, The PCX 2021 variator from Malossi is 5118776. If you check the spare parts and confirm against the original sizes and dimensions of the Navi you may find they are the same.. Do the research first😁👌
I have a Wolf Blaze 2 150cc. What kind of rollers should I get to get faster take off and keep maximum speed? I’m in Florida and average speed is about 45 so I want to get to at least 50mph rather sooner. TIA. Stock scooter except carburetor
Measure and weigh the current ones and try a 5-10% less weight of the same dimension, Stiffer clutch springs will add to the result.
@@scooterstreetau will do. Thanks 😃😃
Now this video is old, but can you explain shimme vario. How far up on the vario will you go? Thanks for your videos
Hello julleboy90, all the content is still very relevant👍. You use a shim to increase (spread) the distance between the variator and the fixed face fan. This allows the belt to sit at the lowest point on the front pulley. May be used when a different size belt is used, wider and longer perhaps.. we like to have the belt very ear to the outside of the variator to allow the highest gearing.
Ok so on a stock scooter and I put in a hi speed variator do I put in the light rollers or the heavy one for best performance?
I would tune the variator by trialling different weight rollers until I arrive at the performance I am looking for..
@Scooter Street ok, well, i only have stock, 4.6 and 6.5 gram rollers. And as far as the clutch springs go, I'm using the heavy yellow ones. I thought maybe i should use the lighter ones cause I'm only using the stock 50cc. I have the big bore 80cc kit, but it's still in the box.
@@g8some Fit the rollers first and trial different weights.
@@scooterstreetau ok
Hello, i have a aprilia sr 50 2020 E4 with piaggio engine. The standard rollers on it are 7,2 or 7,5. I changed the rollers to 6,1 but it accelerates very slowly, like the engine revs a bit but i can reach max 45 50 km/ h and it takes a little bit more time than it took when i had the standard rollers
I still have the restrictions on it but without the variator restriction
The scooter is designed to go slow according to regulations, it needs to be derestricted in order to gain more power and top speed. Changing the rollers is one part of the puzzle but the CDI/ECU will need mods and also the carby and def. the exhaust.
@@Octavian17 See reply☝👇
Does it matter which way the rollers drop in, ( with the "brassy" side one way or the other ) ?
Yes, you need to make sure they all face the same direction, with the smooth (non beveled) side facing clockwise. Double check the direction with your manual. Also, I think my manual called them weights.
@@JB-xi2yv Good answer JB 👍
Good question! When rollers are manufactured the weighted insert slides into the outer shell. Some rollers have an end in which the weight enters and the shell has a capped end to stop the weight going all the way through the shell, this capped end is called the 'closed end' and should always face away from the direction of rotation when placed in the Variator. Other rollers are glued and do not have a closed end so it will not matter. So always look for the closed end when placing the rollers.
Yep that's what I thought, the closed or capped end , opposite the direction of rotation , correct??
So the " closed" or "capped" end opposite the direction of rotation...
My back wheel moving before I even rev which I think means the clutch engaging way to quick what can I check and do to stop that light or heavier weights or stronger or weaker clutch springs
Does it make the performance low? If you want to delay the contact of the clutch you should fit an adjustable clutch so you can fine tune the engagement of the clutch. We use the Polini G3 clutch, wonderful product.
@@scooterstreetau clutch grabba good but it bogs out to fast so I’m Assuming based on what I learned and know it could either be my contra / torque spring could be be stronger and or my roller weights lighter right
@@elitaz9967 Yes. If it started happening all of a sudden check the clutch. If it was gradual check rollers and torque driver.
@@scooterstreetau thanks bud greats vids btw keep up the good info and bike life 🤟🏽♾
One more thing so a wiring video for all the people who have trouble I always get questions about wiring so I made my own diagram if u wanna use it for the vid I feel it’s pretty simple and wayyyy easier to read then the technical manuals
I put on a 70kit and pipe and changed the carb (12,5 original) to 82 jet, i have 4,6g and it goes great on idle but if you go for full throttle it revs up to 4k and the wheel doesnt even turn around, please help
Maybe check the torque spring
4.6 is probably too light. Go back to standard rollers or only 1 gram lighter. Now get the carby jet correct first and then come back to the transmission.
Can you tell me if switching to sliders will increase top speed and acceleration?
Only if the slider fitted say they do, in many cases not. Read the description of DR Pulley. Some models they are fantastic and optimise the variator top speed potential. It depends on so many things, is the factory variator restricted?
@@flyinphil42 Give it go, you can only learn from the result🙌
@@scooterstreetauyes I believe the variator is restricted , I was thinking about grinding the roller pockets out to get the belt to move up the variator.
@@flyinphil42 THis works but only if the variator faces are not already touching.
@@scooterstreetau not sure about that one, do you mean the faces where the belt is wedged between? Is there a space between them?
Very informative, cheers Dave.
Glad it was helpful!
You have such great content on you chanel, I shreaded my CVT belt on my gy6 50cc 4 stroke, and replaced it, the belt had no size on it so I think it small case so I went with 669x18x30,,,put everything back together and it wont start,,,replaced battey, coil, plug ,CDI, nothing,,,,could a wrong size belt prevent it from starting? Could I take the belt off and try to start without it on, so frustrating at this point, any advice would be awsome,, TY again!
Thanks for great comments. Sounds like something is bound up. You need to reset the variator, when the belt blows apart the variator usually will get stuck in high gear. Have a good look through the transmission as well, pieces of blown up belt often work their way into crucial moving parts like the pinion gear, etc.
OK I know after market variators are different in its ramping. I bought a malossi variator with 9 gram rollers for my kymco super 8 50cc 2t. I found out stock is 8 gram rollers. I've bought my leo vince exhaust. How would 9 grams be in my scooter
Try the 9 gram Malossi recommend, you may find it limits the initial rev. So move the a 7.5gram set. You need an exhaust for the Super 8 because they are not so super in their speed.
Ok I have Leo Vince exhaust, malossi cut out filter for air box. Could you please tell me what size main jet I need for kymco super 8 2t 50cc. I'm in toowoomba so a little different altitude
Just tuned in and subscribed thanks for the very good, informative video. I've got a Sym Jolie scooter where would you recommend I buy my bots from from Australia I want to support the local suppliers so any advice would be greatly appreciated. Thanks again for the vids
We appreciate the SUB, thanks. Send us an email and we can supply the parts for you. www.scooterstreet.com.au
Hi, I have taken off many variatiors, Im tryn to get the variator off of my prescott 50i gy6 and the nut will not come off, I tried my usual torque wrench that always works and my buddy came by with large set of socket wrench and he couldnt do it, have you had a situation where you cant get the variator off and what did you do? Id hate to not be able to upgrade this scooter TY again!!!
That sounds pretty frustrating! Not familiar with that particular make but the GY6 engines obviously all share a fair bit of commonality. I would recommend a rattle gun/torque driver with minimum 350-400Nm torque. In most cases you'll need a fair bit more torque to undo a factory nut than to retighten it. They make have used some thread lock in the factory as an anti-tamper, or it may just be corroded or stuck on. If a rattle gun still wont get it off, I'd recommend taking it to a mechanic.
Hey mate, thanks for the video. I watched a few and got more confused than I was when I started. Your video was very clear, mate. Thanks a lot I think I know what to do now actually. Cheers.
Glad it helped, the varaitor takes time to sort when tuning.
Do the rollers have to be a gram apart of each other to mix them? I have 5.4 and 4.7g rollers would i be able to mix them?
Yes you can mix any combination, 3 x 5.4 and 3 x 4.7 is fine (total of 33.3grams divided by 6 = each roller should be 5.55g), but remeber we only do this to find the best TOTAL weight. Dont leave them combo'd.
@@scooterstreetau Thanks very much. Really appreciated 👍
@@richardd9867 👍Thanks for watching🙌
@@scooterstreetau Hi Found that the 4.7g rollers worked best for me after mixing.. Regarding the variator the belt is to the outside edge of the clutch but i still have about 16mm on the variator before it gets to the outside edge is there anyway i can use this 16mm up?
This is a very technical answer to estalish what is not allowing the belt to travel.
@@richardd9867 If you keen to fnd out this is an option: www.scooterstreet.com.au/product/online-scooter-support/
Great video, thank you…I have a Suzuki address110 bike that has reached 120 km, would you advise me to put heavier rollers ?
THanks for the support and comment, MZ. Your Address doing 120kph is very good for the UK110. I would leave it alone, already great✌ Most likely the belt is moving to the top gear and the front variator..
Does it matter how the rollers go in like it what direction? I noticed one side is showing metal, the other plastic, should it be facing a certain way? TY for your videos
The metal end that you mention is the end in which the metal weight is inserted into the plastic roller housing. The force of the spinning variator can push the metal insert out of the plastic housing if laid into the variator in an anticlockwise direction. So the plastic cover end of the roller should be facing clockwise in the variators fitted position.
hi, i have yamaha jog r with 70cc malossi kit. clutch spring malossi and 17.5 carb and performance exhaust but its broken and my problem is when i start riding the scooter takes too much rpm to move but when it starts moving its fine is it the roller or the broken exhaust? (sorry for bad english)
Do not ride if exhaust is broken! Replace exhaust.
Hi. Can you put more than one shim in?
Yes.
I’ve got a 2021 znen 50cc. I could be running flat at 35-40mph and hit a hill and drop instantly to 10mph. I weigh under 200lbs. What would be the best set up for this transmission-qmb139 engine?? Any suggestions would be appreciated. Thanks guys.
The hill is effectively adding more load to the engine so the transmission should automatically lower the gearing. You can better achieve this with lighter rollers in the variator and a heavier torque spring in the clutch but all must be balanced.. Take care not to go too far with these adjustments because ultimately the engine is not producing enough power, consider a big bore kit.
Hi sir, i have scoot 250cc it mentioned max hp at 8500 rpm..how does this information help me to tune the variator?
Find the optimal weights for the engine to hold 8500rpm.
@@scooterstreetau t.q...i did variable weight set of rollers of course it give different responsive..now i understand how to tune base on your advice t.q sir..
Great, trial different weights to find the best performance for you.@@nodinodi
@@scooterstreetau what kind road condition should i observe the engine to hold max hp..i mean when the road slight downhill rpm can go up 9500rpm for the heaviest roller i can get 15g....stock rollers 11g
Take a test track and as you make changes note your speed and performance difference compared to the previous passes.@@nodinodi
I have a 2012 Piaggio Typhoon 50cc 4T. What do you recommend to upgrade the rollers, clutch, etc...in order to get faster of the line and going up hill? I want to modify these items to get more torque and speed. Do you recommend replacing the carburetor kit? How can I deactivate the restrictor?
The small engine 4 stroke is difficult because it simply produces very little power. Try lightening the roller weight by 1 gram for each roller and use an adjustable clutch to fine tune the engagement of the power to the wheel. Check for derectrictions in the trasmission, carby and the exhaust. Fit a Malossi single air filter and raise the main jet 1 point.
@@scooterstreetau got videos for any of these upgrades? What about links to where to find these parts?
Have you seen our YT channel? See the description for details.@@303Conceal
@@scooterstreetau I've been watching several of your videos with these upgrades. Question is, Is the Piaggio 50cc 4t any different from the Fly you show or the Vespa? Are they basically the components?
Yes similar but the larger capacity do not have the restrictions of the 50cc engine.@@303Conceal
hello, I really like how knowledgeable you are with the aprilia sr50. my year is 1999 and 2000 carb model. I'm interested in making it rear facing carb but not sure of the modifications I will or might need to do. I had one before but I had stage 6 rear intake with 28mm pkw carburetor. I'm not sure what mod if there was one to make this setup work. can you help me figure out this? I want to duplicate what I had. just not sure of the frame modification. do I need to do this?
Hi Mike, Thank you mate🦘. You may have the early Minarelli engine. Can you confirm? The Aprilia forum might be more useful than me.
Can you put 2 light and 4 heavier in a hyper2 variatior, or only on exactly 180°
We suggest that you trial different weights to get the bet performance for your set up. Once you find this best performance weight, then find the total weight of all of the rollers and divided this total by 6. This is the weight that each roller should be. If an 8 roll variator then divide by 8.
thanks bought a DLH variator for my nouvo elegance 135..couldnt figure out why it came with 3 10g 3 11g 3 12g plus three red springs.being 200lbs the 10 and 11s work great..thanks
SO good to hear! All the best Dan.
When it comes to replacing the variator rollers then many mechs use grease on rollers & they say that it'll make scooter noise less.
But few of them strictly prohibits of using it as it's the dry clutch thus no grease is needed.
What is the correct method according to you in gearless scooter.
I've got a Honda Scooter that's causing vibrations when start accelerating it from 0 then after reaching 5miles per hour all vibrations disappears.
But at every stop & go, it's visor & body vibrates which is problematic in slow traffic.
Mech saying that variator rollers needs to be replaced & he's suggesting me to grease the new rollers before putting in.
It's a big confusion😢
What is correct is what you find the best outcome for you.
We never use grease in this area unless the variator is sealed and therefore requires grease.
Find out why the vibrations and correct this issue instead of a band aid fix. Again, find what is best for you my friend👍👍
@@scooterstreetau Thanks but what do you mean here by sealed.
Like when variator is stuck or tight?
@@abhimd3455 Some larger capacity scooters come with sealed variator, they are sealed with grease inside. The grease is inside the variator and captive by orings and seals so the grease does not venture out on to the belt and dry faces. Grease is also applied to the shaft and has an o'ring to keep the grease in the lubed section.
@@scooterstreetau Thanks you so much for clarification.
My Honda Activa 5g has 110cc engine & basically comes with an open variator without any grease as I may see when opened it for very first time.
Thanks again
Hi \ thank you for this Great video
I have Yamaha majesty 250cc Scooter can I mix 3 of 13 gm light rollers with his heavy original 3 of 18 gm or this is big difference!!?
Can you advise me what is the best choice please ?
Your welcome, thank you. If the dimension of the roller is the same and only the weight is different then YES. BUT We use this combination method to find the correct weight for testing only. Once we have found the correct overall weight we prefer to use all rollers of the same weight. example: If you have 3 x 13g = 39 added with 3 x 18g = 54 then the total of all = 93g. Divide the total weight by the number of rollers, in this case 6 and use 15.5gram weight for all of them.👌
@@scooterstreetau Will I'm always use the original 6× 18g but I feel the Scooter heavy to move for the first moments thin will be normal
Thin I got to use 6×13g rollers but not a very good results make to me !
high Rpm and high engine sound I think the engine loose some power in this case !!
@@muradrufaeel1054 You can try the Variator for the majesty it works very well.
Or, try Rollers 16 gram and also fit clutch spring set.
@@scooterstreetau Ok Thank you very much \ Best regards 🌷🙂
@@muradrufaeel1054 🦘
Do i need to upjet my carb on speedfight 2 after just changing variomat to malossi multivar 2000?
No.
Hi ! Impressive video. I have a question . I have a sym hd 300 , polini variator 14g rollers and the blue hard contra, also free dna air filter . The manual says that at 8000rpm max h.power. the rpm has increased from before , and 0-100 very fast but then drop , and the max speed comes vary vary latter and the rpm gies to 8100-8200? What mod would you suggest in order to reduce the drop at higher speeds? And do you suggest a aftermarket muffer?
Thank you.. Try varying the roller weight, Go heavier and then slowly reduce weights, so you can see what the change makes on the road. The spring, try the original spring and then again varying the rollers.
@@scooterstreetau thanks. And what is your opinion about aftermarket exhaust??
@@christos5635 Aftermarket exhaust: Great sound, more noise awareness for drivers. At this cc it gives good mid-range power and can add to the top speed, you need the variator/transmission tuning and you have the variator.
What makes the more expensive "high performance" variator kits any different than the standard kits you can buy ?
They are developed to increase the effectiveness of the transmission by maintaining optimal RPM. With different weights the variator can be fine tuned. This can increase the acceleration and also top speed.
The ramp slot that the rollers are housed have a different angle, some kits have upgraded the size of the guides with smaller tolerances. Often the performance variator is cheaper than the OEM. Saying this, there are cases where the factory Variator will have the same performance as the aftermarket Variator.
Most scooter parts from China labeled high performance are just “cheap replacement” parts. It’s more important that your transmission is properly tuned to keep engine rpm in the power band. The physics is the same no matter how much you paid for your variator.
Have you ever done a Lambretta V125?
No, we have not worked on these.
Can you tell me what peak low end torq? Vino 125
I am not sure, find specs.
What mods would you use for a lexmoto diablo 125 E4
Exhaust, carby, variator, clutch big bore kit.
@@scooterstreetau could you do a video on the recommended parts and brands, I been looking but have found much just generic 150cc big bore kits
@@official_r41n54 These parts are very cheap and numerous, you can buy them from eBay and many Chinese scooter websites.
I think i am a little confused...If i am right you mean that using lighter rollers we should have more torque and if we use heavier rollers we have more speed.
Am i right?
It is so much more complicated than that, the best way to gain an understanding is to fit different rollers weights and see how they effect the movement of your scooter. So try a lighter weight and test ride the scoot, now increase the weight and test again to get a quick answer as to how these change the acceleration and higher speeds.
Hi great video. I used NCY 12g rollers and managed to get my Honda Navi up to 52mph. But at the top end speed I’m getting a vibration, any thoughts on why? I did notice the 12g rollers have different looking sides on them. Do you know if they all have to go in the same direction? Rollers did not come with any directions and can’t seem to find any information or videos on it. I’m thinking I’ve reached peak performance with the 12g rollers but not sure. Any thoughts or suggestions Thank you
The vibration could be coming from any rotational part. All parts must be checked and balanced.
Hi, i just broke 1 of the 18 blades that the variator fan has. Does it unbalance the variator or can have any issue? Thanks in advance
Ahhh Walter what have you done Mate..... Tip: Break off the opposing blade, now remove any rough edges on the broken blades (use sanding paper) to make sure no loose pieces would break away during running. Use the correct tools , don't jam anything in there that may damge the blades, we have all done this at one time😁👌
I really appreciate your explanation on the CVT. Can I please ask some advice? Sorry in advance for the long message. What if I have a Chinese GY6 50cc engine with 80cc bbk and aftermarket exhaust with Keihin carburetor and higher gear ratio to get better top end. I haven't done a thing with the CVT except for variator which wasn't much. I think I may even be running my stock rollers again. I know that was stupid not to do anything until now but should I use the 1500 or 2000 spring and what size sliders or rollers should I be running? Also does a performance clutch with larger pads make any performance difference compared to a new stock clutch or should I just concentrate on the springs and weights? I am experiencing a big from like 15-30 mph and it seems like I should be getting a better top end speed. I'm currently getting about 42 flat and 50-52 downhill lol. Can you please offer me some advice? I would truly appreciate your help brother!
I would try some lighter rollers and replace any worn parts on the engine including the transmission. Look to change the clutch springs to 2-3000rpm or even higher if the engine is revving. You will need to check the variator top speed by pen marking the face and riding. This will guide you as to which rollers, this is trial and test, try lighter rollers and then try heavier.. The performance clutch is good but buy quality and try for an adjustable clutch like Polini G3. Check the main jet on the carby make sure there is enough fuel and the engine not running lean..
@@scooterstreetau thanks so much for replying! I asked several and no one would answer except for you. So I'll try the 2000 rpm spring and some 6 gram Mr. Pulley sliders? You think this should be sufficient and then try the marker deal on the variator?
Do you know if they make the polini G3 clutch for a 50cc qmb139 Chinese motor?
@@mikecuev820 You are welcome, thankyou for supporting our Channel🙋♂️.
Yes, try the tighter springs but the engine must be revving to engage with better acceleration.
With the rollers/Sliders you must trial different weights to move to a better performing variation. So try 6G and then 6.5G and so on until you have the best performance.. Yes Polini do make a suitable clutch..
What can i do to make the unused part with the pen park smaller??
Many things to try: After each change test again.
Change the rollers to heavier.
Replace worn parts and service variator and clutch.
Use a performance 9or longer) belt but not Kevlar.
I have a super 50 , 50cc scooter I install mine with slider roller weights 8 gram . The acceleration was smooth but when I go about 35 or so I can feel the belt is that bad or should I change it ? I also didn't upgrade my clutch just got a new roller weights
What do you mean you can feel the belt?
@@scooterstreetau I could feel the belt then I go down the hill after I put slide roller 8 gram
@@merjimjimenez1361 Send the best description in your native Language, I will translate👌
In Holland the variator has a backplate that acts asa restrictor ,it limits its expansion. I read that this piece can be removed.
Any experience with that?
Good video btw. Thanks. :))
That is correct, remove the cage over the ramp plate, usually 3 screws retain this. Thanks Bro.
How do you get the belt to ride higher on the pulley for higher top speed? Everything working well, reving to 7k but top speed seems artificially limited and belt isn't riding up to the edge of the pulley. Advise?
What make and model do you have? It heavily depends on the make/model of the bike - it is slightly complicated. As a general rule, you can install a slightly longer belt to achieve this, but only on bikes where the rear pulley is not closing all the way at idle, and where the factory belt is too short (which is the case on some 50cc 4 stroke models, as well as some of the Euro 4 Piaggio Typhoon and Aprilia SRMT 50 models). If your rear pulley is closing all the way at idle, there isn't much you can do. If you were to install a longer belt, the belt will still sit in the same position of the rear pulley due to the belts width. If you install a longer and wider belt, it will travel further up the rear pulley - but due to the additional width it will also sit further up the front pulley, essentially cancelling out any positive effects.
@@scooterstreetau Thanks! It's not closing all the way - I have to squeeze the clutch to let the belt down in a little just to get it (very tightly) fit over the variator shaft. Where is a good source of belts? I have a belt marked as a 682 20 and would like to go up to what - 692 or more?
@@Cliflyri When you say squeeze it in..to fit it over the variator shaft. This is normal. You need to check the belt position on the rear pulley at idle when the engine stops. Watch more of the Variator playlist videos. Also, Belt manufacturers make many different sizes. Malossi make a 705mm length belt (PN 61 7221) so check them out and find a belt that may suit.
So if using Dr pulley sliders the doctor pulley logo would be on the side opposite of rotation....
Dr Pulley Slides are a great example of having the Closed End. So if we have the variator laying on a flat surface, as we place the Sliders into the Variator slot, the DR Pulley writing will face Anti-Clockwise.↪ watch from 7:40
Great tutorial. I have changed mine to molassi Multivar variator. The rollers are 8 gr. Feel the rpm is high before the bike move. Should I be looking into the clutch springs
Rpm should be high to allow a stronger engaging of the clutch. Can you compare it to how it was originally?
@@scooterstreetau How often should the rollers be changed. Feel now it has slowed down after 8mths
@@swimwithcoachraven1532 Worth checking every 3-5K
@@scooterstreetau originally rpm not high. Looking to build more torque
@@swimwithcoachraven1532 ok well you are on the right track, RPM higher with a later engagement of the clutch to boost from the start position. Tighter clutch springs will allow the rpm to build, so give the springs a go.
I subbed!What rollers should i get for a better start,i wanna tune my scooter for wheelies
Straight out SUB, Love it😁. What size are your current rollers? Let's say 7.5 gram, try 6 gram and then make small weight adjustments from there. Too light and it will not maintain the pull and over rev so trial and test🎉
@@scooterstreetau its stock ones so idk its garelli gsp 50
@@hvhnubek The GSP use the Minarelli engine so I would expect to see the 15x12 rollers in the Variator. Try a set of roller 15x12mm of 4.8 gram.
@@scooterstreetau thanks for the advice
For 50cc injection 4t, says 7500 max rpm,what rollers would You suggest? And clutch springs 1000 or 1500 rpm?
Rollers at 6 gram, now this may vary and you will have to test with lighter roller (5g) and progress to a higher weight.
Clutch springs, go to a medium tension of approx. 2500-3000. 4T 50 don't rev so set a realistic expectation. All the beast👍
@@scooterstreetau thanks Man! I apreciate it
What rollers do I install for highest top speed?
I have no firm answer. You must trial different weights to find this out for yourself. The standard rollers will give the highest top speed but may not allow the best acceleration. A slightly lighter set of rollers will also give the highest top speed and the acceleration will start to increase.. If you reduce the weight by small increments you will eventually find a weight that will no longer get you to the highest top speed (they will be too light to drive the variator to highest belt position). So you need to find the lighter set of rollers that increase the acceleration and also still provide the highest top speed. This will be the optimal set. At a guess try 12-15% less than standard.
Does the ramp hads to be tight ?
The 3 guides keep the ramp plate sliding in and out, yes it must be firm so it can move freely without heavy resistance.
I have just bought a 125 scooter sym which gives 12hp what i need to earn more horsepower??
You can fit a 150cc or a 160cc cylinder kit or higher and also the tuning parts to go with it.
Having your CVT modified, can it increase top speed ?, but the engine is still stock
Yes. The CVT has many opportunities for speed increase. Particularly from stock Transmission.
Great video!! I have a question
I run a piaggio typhoon with 70cc kit
Main carb with 74 jet
Malossi exhaust
Malossi air filter
But the problem is that when I go to a big hill it is like the spring can’t change the transmission (I have factory heavy rollers and factory soft spring from 50cc) is it better to leave the rollers and take a harder spring ? Or is it going to put to much pressure on the belt? If I change the rollers with lighter is it going to lose grip on the belt ? (Sorry for my English ,I hope I am understandable)
Well Thank you😁 we appreciate the views and comments.. A few things, make sure the carby is tuned, the air-mix screw all the way in and then 1 single turn out, set and forget. Is the jet size large enough? Is it running lean? The factory rollers are 7.5. Try a 7.2 or 7 Gram set ensuring the belt is always reaching the outer. Diameter of the variator. I suggest this because it is easier to work out the solution by changing the rollers instead of the Torque spring. By the way make sure the clutch twist rotation is smooth and not stepped.
@@scooterstreetau
I have 6 gram rollers
I have some holes to the filter box also …
And the air screw is half open
I will try Malossi green spring in order to help it with the transmission….if it doesn’t change I will buy new even lighter rollers to try again. My plug color is brown
@@flawlessmusic8850 For variator testing , remove 2 rollers to see if it makes a difference, there are many ways to test with the parts that you already have, I am not to sure about holes in the airbox unless you have the carby tuned to suit.. too much air can lean the mix and the power is reduced and it bogs the engine under heavy throttle..
@@scooterstreetau
Ok perfect I will try removing rollers
Thank you !!! I have seen all your videos on your Chanel 😂 I wish I had Malossi piston set but I have only Malossi head with a cheap 47 kit 😂
@@flawlessmusic8850 Did you measure the Squish?
I just purchased a 2019 metropolitan, how can I make this scoot to hit 45 mph and get there quickly? It's completely stock bought it with only 15 miles on the odometer. Currently it hits 37-38 mph with me weighing 205 lbs.
Is that a Honda? We found the variator is a good solution to revealing a little more power and speed.
Ask the local Honda dealer too..
I have an Eton motor and I need a rear drive shaft do you know where I can order one?
Hi Jeff, Where are you located? From a little research the Eton looks to be very similar to the Adly/CPI. Contact your local Eton dealer..👍
@@scooterstreetau I’m in Virginia Beach va I don’t think we have an Eton dealer around here but I’ll check. Thanks for the info I’ll start looking for adly rear shafts and see if they will work.ty
@@jeffkrauss5582 Eton America get2itparts.com/Scooter-Moped-Parts/ETON-America
Hi Scooter street! I recently bought a china 2stroke scooter. It had 4g rollers when i got it, they were worn, with flat spots. I replaced them with 6g rollers, it had poor acceleration and top speed then. Now i put in 5g rollers, it seems to have good performance now, but im afraid it is reving too high at high speed. It has leovince exaust on it and stock 50cc cylinder. Can scooters get damaged from reving too high? I dont know how much rpm is normal, no experience with scooters
No, it cant really rev too high so don't worry about high RPM. 2 stroke engines are high revving engines, a near standard scooter such as yours cant really over rev to the point of damage unless there is a serious mechanical issue. You should try the marking of the variator to see if the belt is reaching the top of the variator. Also a heavier torque spring will counter the heavier rollers. Do some trialling and come out with the best outcome for the transmission..
bro for honda dio what combo should I use
For the roller weights try 10% lower than original. It is all trial with the weights.
for the springs?
@@giorgosaks51 Buy a set of Malossi cutch springs and fit the higher tension ones.
roller weights?
@@giorgosaks51 Trail different weights to find what works best.
Best video on this subject. Forget the others.
GP, Thank you so much for the support🦘🦘.
but what can we do to make the belt climb all the way up?
i just want more top speed. my super 8 4t starts to sound weird and max out at 50kph no matter how long of a downhill it is
You need to look for a restriction. Some cases the belt is too short, some cases there is a restrictor. I have a video coming this Saturday that discusses the Kymco restriction. Sub so you get the notification👍
You can remove the metal spacer in the roller and drill each spacer out to the exact weight you need.
Yes, All true😊. Many ways to get the same result.
Hi Scooter Street, I am Marc with 70 kilograms of bodyweight, I just want to have an advices from you with my Yamaha 50cc scooter set-up upgraded into 47mm Block and Re-chambered Cylinder Head, 70-90 V8 exhaust Pipe, 24mm Carb, Kitaco Racing CDI, 13:34 Secondary Gear, Racing Coil, CT manifold with .35mm Polini Petals, 1000RPM Center Spring and 1000RPM Clutch Spring, Cheap Racing driveface and Pulley set, stock Clutch Lining and Bell, my question is what roller weights should i try to reach the right acceleration and Top/High?
Hi Marc, difficult to have an exact answer. Like all the other variator questions the best answer is to start at the factory rollers and reduce from there. There are instances where the roller weights are increased but usually lighter will be more effective. Trial and testing.
Do I have to grease the rollers? Or just as they are.
Only grease the rollers if recommended, there are recommendations in some of the lager capacity engines where the variator is sealed with rubber seals to keep the grease in the variator. You do not want grease to contact the belt of slide faces.
Ok well I lightly greased the rollers because when I pulled out the original one, I didn't really feel any grease but a little can't hurt to keep things smooth.
@@g8some Oh no! You are about to find out why the rollers should not be greased unless in a sealed unit.
@Scooter Street I hardly put any on there like so little it like just enough to hardly tell . The grease I got from polini was for filling in tiny hole in the rollers. If there was any.
@Scooter Street I didn't goop it on, more like the head on a pins worth.
I have a 22 Honda Air Blade 150 . It came with 16 gram flyballs (rollers) I put in 20 gram , then I removed the air baffle and tube in the filter casing , took it to shop remapped the ECU and oh boy what a differance .Thiking about putting in a little heavier variator spring . It's not for racing but just cruieing and towing a small cargo trailer .
Great Job, how much did you gain?
Great Job, how much did you gain?
@@scooterstreetau AS for speed I don't know have not tried that yet . Before is would be hard to spin tire in dirt , now it will put the rubber to the road ,the pick is really goo . Sure looks like I will be going to 20 gram sliders .
@@jamesbraun7709 😆 sounds cool.
Just wondering, if the scooter is restricted will lighter weights allow it to get a higher top speed or will the scooter still restrict the speed?
If the restriction is the rollers, or the variator then yes. If the restriction is in the exhaust, then no.
@@scooterstreetau Do you still think it will be restricted if there both a restriction in the exhaust and the variator?
@@5hvnjyybb37 The only way to Derestrict the scooter is to remove them all. There are no shorter cuts, the removal of restriction is the most simple way.
hi mate,i got yamaha bws 100 cc.I didnt know the weight of my stock variator,which one variator shud i put to make it light n fast?
G'Day, The stock variator rollers are 15x12mm 8.3Gram per roll. So you can try a lighter set now you know the original weight.
@@scooterstreetau thanks a lot 👍🏻
@@scooterstreetau hai,i wana ask again about my yamaha bws 100.Which variator rollers weight can i put to increase speed & acceleration since u said stock rollers 8.3g each 🤔
@@abhha7453 if you use very light rollers the belt will not progress to a higher gear when the RPM increases and the result is an over reving engine with no speed increase.... As mentioned above try a lighter set than the original 8.3 gram. Why don't you try 8 or 7.5 gram.. trial different weights as this is the best way to learn to achieve the result you need... watch the above video, all is explained..
I have an Aprilia sr 50 with a tuning exhaust and im driving around 80km/h ( 50 miles an hour) and i am not sure what rollers i should get, do you have a slight clue?
What are the current rollers?
@@scooterstreetau im not really sure, but if i would weigh them, and lets say they are 6g, should i try to buy 7,5 and 4g rollers
@@oinamyrini2603 The factory rollers on SR50R are 7.5 so trial 7 gram and then 6.5 and so on until you reach your best performance.
@@scooterstreetau ok thanks
@@oinamyrini2603 🚀👌
Hi guy, i have some question:
-what is your recommend clutch shoe material for stop-and-go city riding!?
-stock clutch shoe (soft) and carbon-kevlar shoe(hard), which one hit the bell rapidly, and give the best friction force!?
-if i choose the more friction shoe, i must choose lighter roller weight to avoid the belt from slip, isn't it!?
-for normal riding everyday, we must take off at high/full throttle or just slightly throttle!?
Thank you 👍
-Clutch material: Standard clutch is fine, always maintain and clean the shoes and bell housing, upgrade to a higher class when wear is present.
-Stock clutch shoe: Street spec or Race spec! Choose what you need for the riding type your doing.
-The trans should be balanced, example: if race class go with race class for the entire system. The roller weight determine rpm and also top speed.
- Throttle: Depends on the scooter cc. For me on 50cc it is always full throttle and control with the rear brake.
what happens if you just shorten the the spacer? the hollow piece in the middle of it all. shouldnt it accomplish the same thing
🫢the take off will be terrible as the belt will ride higher on the variator face.
Is it essential to change the springs if I use lighter rollers?
Not essential, changing the spring tension determines at what rpm the clutch will engage. Once you are happy with the roller weight then you can set the clutch engaging.
Fantastic explanation! Looking forward to ordering some upgrades!
Firstly, Great comment thank you🙌 and thanks for watching. chat soon.
@@scooterstreetau Cheers, have sent a message via your website