Reed vs Piston Port part 2 -
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- เผยแพร่เมื่อ 30 ก.ค. 2024
- Things go south, then a bit east at the end...
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Finding whatever you got that fits is the motorized bike way lol I've spent a lot of time on these engines.
You are a pioneer of modern motorized bicycles sir.
Anytime I’ve heard that high pitch squeak it’s been because my head wasn’t torqued down enough.
The rabbit hole runs deep when we want to further investigate our passion due to all the new technology and easy information at our hands it's knowing where to start is the problem. But I'm getting the hang of it. Thinking without your head it's like trying to breathe without a heartbeat. Or vice versa anyway I'm getting the hang of this now. Thank you
I can't wait dyno results, I'm looking after it!!I love when things go to plan mate.Cheers
Nice work! Just a tip, I already made my own motorized bicycle, the real deal, took a twostroke out of a scooter and built it from scratch. With this angle you have on the carburator it may be complicated to adjust. The carburator should stay parallel to the ground. Mine had this angle problem.
Giovani Filipo Mobrizi Gabrigna just a question. How many of his videos have you watched. You say from scratch like it's some big feat. He built an engine literally from scratch guy. Not just putting parts together.
You need to get yourself a set of jetting drills. If you go to big just silver solder the hole closed and start again. Bit of an old scholl method but it works great hope it helps:)
I do!
Tuning carbs for two strokes is very gratifying. The motor really tells you what it wants.
Really enjoyed the video the filmography was great, especially around the 2 min mark when you started puttin it engine back together. Cant wait to see what it can do!
Thanks man!
Great vids. Thanks for your time. So fun to watch. Keep up the fun job !
Thanks!
I have an 86 DT200 that I rebuilt years ago. I had it running but I always wondered why the old piston had ports like you added and the new one from wiseco just had a notch at the bottom.
Hey Man. Love your videos. I bought a cheap Jet Drill set with pin vise from ebay for tuning. Also if you drill the jet too big just solder it up and re-drill through the solder till you get it to the right size. Cheers
Same lol I even made a video on it.
i made the same comment lol
Or you buy a complete kit with various sizes.
with soldering the jet u wont get as good result as drilling stock jet bigger. the lenght of the hole matters as much as the size of the hole. i have had so much issues with soldering jets, first it runs too rich and i "downsize" the jet and then it wont even run without wetting the sparkplug :D but yea that will work but u just have to have some time and pations doing that.
I’m late again, but yea mate, cheap eBay jet drill set and heat and soldier if you fuck it😁
Honestly that back rim looks like its moving fast asf , I love this
haha "ah shit we're going to a birthday party (sadface)".. that's real dude :)
Compare the motor now to how it was out of the box... it revs free now, it was so strangled originally like it was fighting itself just to rev. I’m hoping for a decent figure!
You are an awesome person brother...your kids should be proud
Thanks man!
Enjoyed the video as always keep doing what you're doing.
Thanks man!
Talk about a cliffhanger :)
Id love some pros n cons on using a float carb Vs a diaphragm carb got load of them on chainsaws and jack hammers why not use them on my mopeds !?!!?
Great videos love them all. sometimes i havent any spare jets and i heat the one i have fill it with solder bore it almost through from each end with a bit suitable to the solder counterbored and cleaned both end of the jet then i bore the solder to a size i want if it ends up too big just reheat and fill wth solder for another retry when happy use a piece of wire that fills this hole and measure it to get an idea of the size, ihope this makes sense,
Just looking at some of your earlier vids Alex, I only been on your channel approx 8 weeks........I hope you tightened them headstock bearings before riding this manchine 😬 I thought the stem were going to snap and send you and the bike through the garage door lol......brilliant channel mate, loads of us await your uploads! Bravo!
Awesome stuff love these vids I want to see what this thing can do! Keep it up
Thanks!
I’ve also went an windowed my piston like LA Hover Bikes, now I’m going and re-jetting, I’ve got a 72 jet in now and gone all the way from 60-72 with a little bit of a better run with each jet increase. Still not running how I want it to though, any suggestions?
EDIT: I had an air leak with one of my 4 head bolts not tightened down all the way, it is a whole lot better but I still feel like there’s more room for improvement, any idea on what size jet my get me to where I need?
Well done i like your can do attitude. Look forward to dyno
Thanks!
Did you make the tuned pipe
2STROKE STUFFING quick tip for drilling out jets i use torch tip cleaning files they come in a ton of sizes and are cheaper too. You can use a undersized one and slowly file it bigger. Love your channel btw keep it coming
On 2 strokes I through the length of intake was very important but maybe with a Reed valve things are different.
I will give you a tip! Instead of bying a specific Jet Drilling kit search on Ebay "PCB Drill Set" and you will get a bunch of sets with 10 drills from 0.3mm to 1.2mm for 2.5€. i bought like 6 sets at once about 1 year ago! works fantastic!
Thanks man!
Always a good day with two stroke
Yes!
Where can I get that intake to run a bigger carb but no reed valve ?
Where can I buy the rubber adapter for put the carburetor to the intake the one is coming is to big I got the same Reed oko as urs and the carburetor please send my the link thank you so much
Inam new on the 2t scene.... is really necessery to have a windowed piston when using reed valve?
It sound better and better. Good work
I just bought a oko PWK 21 Carb. Does that reed valve, intake manifold, would it work with my Carb? Also can I use the carb coupler that came with the Carb with thar set up? Or need new one? It looks like it would, I need one... Thanks 😎 cool send me link please!!
what oil fuel ratio do you recommend? the one i have says 20-1 .
You should go with one of the walbro carbs. They are jetless so you can just tune them with the fuel screws.
Really ? what carb please ?
@@MrJermbob any walbro pulse carburetor. they come on chainsaws, and you can find em all over ebay. they're the ones that look like a cube, sorta. Some have external pulse lines, some have internal pulse lines. You need to tie the pulse line into the open crank case somehow or another. Just find the carb with the right bore size for your engine.
If you dont mind running at peak epa performance for that moment in time with absolutely no control of adjustability then sure that will be an awesome carb. For the rest of us that will not settle this carb is absolutely trash.
I am an honda mbx 50 owner. Some times i am thinking that another reed valve placed in the exchaust side will make motor to work more efficiently . During compression the reed will be closed because the pressure until the exchaust port will be totally covered by piston is not high. As a result there is no loss of mixture in the exchaust. When the ignition takes place the the high pressure can open the reed valve (in the exchaust side) and maybe this will work great. What is your opinion?
What will cause one not to gain RPM ?? mine get up to 34 mph and just goes flat it won't gain anymore rpm at all
I am a fellow gearhead. I got to say I love the way you work on a solution. Just subscribed. I will be interested in your results to see if I am going to install Reed valves on my 80cc.
Thanks!
I have been watching all your videos and i laugh every time I see a bicycle on a Dino. You know what you need is a insulated sound booth. Kind of like a small paint booth around the Dyno.
How do I find how to make a windowed piston like my size the hole should be
Awsome Sir you are leaving Great footprints for me too follow,Thank you Sir
Great video mate! watching your videos makes me want to dyno my DT50MX (tuned up obviously)
Thanks!
harveym i got one too
Great video, you just got one new subscriber;D
Thanks man, awesome!
13:40 That thing looks like it goes like the clappers!
Gasolin.no selger dyseborer. 0.35 til 2mm om jeg husker rett. 0.05mm steg opp til 1mm, og 0.1mm steg derfra og opp til 2mm.
Jeg kjøpte fra Gasolin sist vinter for å justere 2 dobble gassere til en bil. Tjente inn kostnadene ved å slippe å kjøpe nye dyser i forskjellige størrelser. Prøvde litt opp og ned, ved å lodde og så bore.
Dang buddy I have been with you for some time and really look forward to each an every video you put out. I wish I could help you with patron. I also have a family a couple bikes to. Hope things are good brother. God bless
It seems to breathe freely I think, that hole in the wall must work good. If you use solder, be sure to clean away any remains of the flux on the inside of the jet, with a drill bit. Maybe you can use the 0,8 bit in Biltema 19-2009, as a main jet?
Keep upping the good time in the shop, it is very interesting to follow your work.
Thanks! Thanks for the drill bit tip!
How does a motor like that not get too hot with no air cooling please ?
I've just had a quick look at that blair book ,yeah it's gonna be a nice read ,thanks for the tip mate ,have you had a look into the Konig tuners ?
What machine do u use???how much.cc ???
i have a question about doing a power jet on my 49 cc moped . what is your input on it and how would you perform this task and also what size jet would i use thank you -mohamed
If you're not struggling with jetting anywhere in the rpm range without one I wouldn't bother - no real benefit power wise.
Hi! What is the jetting on the last carburetor??
I know this is old, but Ive had success making tiny 'drill bits' out of welding wire. Snip the end on an angle and leave a wide burr on it, then chuck it up in a drill. Itll still cut the soft jet material. You just need to be patient with it.
Sounded like it was running perfectly first go even with the jetting that came with the Frankencarb bolt on 🥇
It wasn't too bad, but very lean off throttle - recipe for seizure.
Yeah wouldn’t last long like that but all things considered put up a decent power number I bet
Hey man i need your help. I have a scooter witch has a kinda low reving 100cc yamaha engine. And also i have a 21mm phbg copy and a original kehihin pwk 28. I want to change the stock carb (mikuni 16.5mm with 75 main jet) but ı dont know the jettings of the others. So can you give me a advice to choose jets for my carbs? Thanks!
Start out with big jets and go down until it runs clean!
HELLO!!! j'aimerais vraiment monter un allumage comme celui que vous avez fait sur votre vélo moteur , car le miens "a cause des vibration sans doute" viens frotter sur le rotor pourtant je le vis bien fort , fffff!!! avez vous un site ou je pourrez voir le principe de votre allumage???
Love every single bit of this vid, even the moment when The Boss called :)
Thanks!
how does that clutch mechanism work on the motorised bicycle in which you can pedal it but then engage the engine and not have to pedal?
Just a typica(tho crude) plate clutch.
What should i do when in my pwk 24mm the slide doesnt go all the way up and i have tried set up the screw at the top of the carb to its max?
You need a throttle handle with more travel.
Is your exhaust is for scooter like honda dio??
awsome video man and some real life family issues and bartering :) i can relate to that :)
Thanks!
keep up the good work man :)
Thanks!
why not solder the jet so you make make it many sizes and if to big you just solder and drill again?
thats what i do
i do the same thing works pretty good
Should've thought of that, thanks!
hell yeah now you dont have wait for jets more awesome vids and i have this engine this is a gt5 with a type b piston
i like his bargaining skills.proper bloke.
You can make a video teaching how to tune this engine? I have an equal, but it's 48 cc, and it's not tuning, how do I know the carburetor regulation? I'm Brazilian and it's difficult to understand you
Have to ask bud, Have u pressure tested your crankcase at all as that will screw any carb work u do. Especially the way it was idling hi. Block manifold block exhaust Pump air in thru carb side.
Haven't, had the problem persisted with the current carb I would, but it seems to have calmed down now. Good advice!
I like that your shirt matches the bike frame
I need the name frome the song at 10 seconds please
I was waiting for you to grab a random carb hell yeah!
Random carb = best carb
Ford For Life damb straight! What’s up man!
@@MRTuning704 not much fools stroke problems still bro
Whats the squeeky noise on start up
A few recommendations for more power, clean up that hole in the piston and angle the top and bottom sides to “chop” the air passing through. Much more important though is you can add a transfer to the cylinder. I use two thin ones going from the intake up to the height of the other transfers. Just make sure the slots in the rings don’t line up with the new transfers since there will be no wall on them
Good tips, and yeah I could've done a better job on the piston. Having the ring gap running directly over a relatively small port is fine btw, that how I run it in the Spx(and many other builds)
Great video, as for the noise build a cheap ply box over the dyno with recording studio foam on the inside and a big Perspex window so we can watch. Just an idea .
Great idea!
During the dyno pulls you were saying it was running LEAN!!! What are you using to see that? It never really shows in the video. I've spent the past week tuning my Suzuki RM250 with Keihin copy PWK38 using a Bosch LSU4.9 wideband sensor. The results have been amazing and well worth the effort. What AFR do you like to tune twostrokes with at WOT? I found anywhere in the 12.2-12.8:1 AFR range it goes like a rocket!
I'm losing a lot of power to my pour clutch. I watch all your vids and picked up porting from you but now I need to make a better clutch plate and own pads. Ill make a video to show you. I got a sweet idea on how to mod the clutch plate then I need to make my own pads that fit it. should be fun!
Looking forward to it!
DYNO... I can't wait
I’m sure you already know but since it’s there, spark to the back to cool the exhaust port and fire more efficiently. Godspeed sir.
What your problème head motor first partie vidéo ??
well done man don't worry we all have a anti fun department but good luck in the week for a dyno run
Thanks!
is it time for twin carb's
4 years later , & things have really
changed.
@Eduardo_Espinoza and now five years later and holy moly have things changed with motorized bicycles! It's crazy! Smolik Performance is the number one leader in pushing out Grade A billet engines and products. Along with the team Ken Hinson and Kelly Cansler designing the A85, good out of the box power can be had at an affordable price now. It's amazing!
What model is the 24mm pumper carburetor?
Its a walbro WB-27 It comes off a 170cc 2 stroke rc airplane engine usually they can make upwards of 17-20 hp below 7000 rpm. The smaller one is a WJ71 of of a 125cc rc airplane engine that makes around 12 hp also below 8500 rpm. So either would be fine.
your video is getting better and better now, love it !
if you have a chance, maybe try build or tune vespa engine, it's 2 stroke too ! :DD
Thanks! Could be fun, I've built one for a Piaggio Ape before.
given it your best mate.
This is a good channel, for checkin out a hobby many people have, I have built many bikes, always faster than the 1 before, the last 2 bikes, had the most reliable, and powerful motors were husquvarnas biggest concrete cutoff saws 124.7cc, they sound like a 125 motorcycle when you replace the stock exhaust, with an expansion chamber, and clutch is big enough and its a belt drive so figuring out the drive, is not complicated, compression release makes starting much easier, its fun to play with 2 strokes, I would like to experiment with a rotary valve intake 2 stroke if they still make any, well enough, ill keep checkin you're channel see what you come up with next, waitin to see the castings become a bad ass kickin build, and very high rpms, don't give up, it will happen.
hello can you explain the purpose of making a hole in your piston im french and i didn't understand evrithing
It's to keep the intake port open all the time - no need for intake control with a reed valve.
@@2STROKESTUFFING oh ok thats a great idea
I've lead shoulder the jets that were made to large then drilled back original the used wool string to file out the jet little by little until it got the right color, { colour }, on the sparkplug. It is a slow way but it will work with those odes sized jetting.
I can't live without my jet reamer (not drillbits), you need to buy a kit :)
a float carburetor wont like that angle its fitted on.. if that helps .. if u had the ibea on there it would be ok with or walbro..
True, but the PWK will work fine at a slight angle.
Will you ever upload the review of the deluth tensioner?
Not until summer when I've tried it on-road.
I've had this same issue by needing a size in between drill sizes. In ended up with jet that was to rich so I lead it closed then drilled it next drill size down and then used wool string to run through the jet used the wool to file out the jet until I got it to work. I tried many times but I finally got there to the right mixture time after time it took a lot of time but boy it was worth it. I got 99 hp on the ground out of 496 cc twin Suzuki with the weight right at 417 lbs bearly over 135 mph and still got 45mpg ay 55mph. never needed spark plugs for over 100,00 miles of use. One owner which was me. chambers at 101 mm max 45 in 27.5mm stinger by 800mm long. Still, piston port system and all were still stock area while the jug raised 5mm the head gasket 2mm brought down to 0.0254mm for the head gasket. Combustion chamber in the head was the same shape as piston crown, I used the pistons to polish the heads and piston with jewelry polish into a mirror-like finish. cleaned the transfers to cylinders transfer channels sizes. Head gasket was Alcoa aluminum foil many cuts until I master perfect fit of a single sheet. All of this in 1977 at sea level while I was stationed in South Florida next to the keys. Oh I re-geared clutch to 2:1, not the stoke 2.5:1 GMC 56:112 tooth gears this had to cut clearances by the screw holes in the cover and longer screws around the 56 tooth gear only later did them all just make clutch changes easier when the clutches needed to renewed about every 35000 miles only if I ran it hard. stoke gearing was 2.5:1 x each gear number 5 of stock transmission 2.2:1 after my work 2:1 same stock transmission 5 gears and 2:1 rear chain set I ended up with large box of reed valves on each still piston port of both cylinders got the low-end torque and the big boxes of reed valves problems made me not have 128 Hp until I made big reed valve boxes for each port. Then I got the very near 100 hp I wanted on the ground at the rear wheel.
well you can ether invest in carby jets for random carbs ... or u could invest it a jet drill kit .. on ebay pretty cheap i don't know much about them but u may benefit . sense its become a common issue
Yes Sundays were always hard to get away with LOL. I used to run chainsaws in the 80s and they had the Reed valve on the chainsaw right after the carburetor and what you really got me going on this one of us the guy who had this before me I put it on somewhere else which makes a lot of sense. They have a lot to do with back pressure or your bottom pressure or I don't know what it is but these motors are so simple to run that used to make them so simple to run back in the 80s late 70s it was nothing but a piston with a carburetor on it and a little wheel for the chain that's it now I think they make them so damn cheap they look nice but they're cheap anyway great work. I'm ready to take my bike out now I'll see if it's a disaster or if it works.
I don't see a velocity stack on that carb. Is it there and I'm not seeing it or what?
No stack.
How much mm was the carb installed on the spx that was "overcarb"?
32mm PWK, was struggling with vibration induced fuel foaming. Running a 30mm ibea flat slide diaphragm carb with good results so far.
@@2STROKESTUFFING Ok, thank you!
you need a Jet drill set and some little pins in different sizes to check you jet
@9:46 the power of women....I've got the same problem for 29 yrs
Yep...
Power of the Pussy :P
Scrap it, that's what I did :)
Where Did you get the housing for the reed valve?
Was given to me... Places they sell motorized bicycle tuning parts should have them.
Y did u never finish this series I love your content but I love these bikes just a bit more n I’m working on something very similar to this
Raising cylinder may have gave better results by raising exhaust port at same time no?