The port map Smolik posted today on the A85 shows the ports have significant room to be raised. So to set your squish gap it would be better to space the cylinder upward and deck down the top of the cylinder until the squish is correct. (Obviously you should measure the timing of the ports in your particular cylinder before doing anything).
Do you know why they retard timing? It is because, with an expansion chamber, at peak power they effectively supercharge the cylinder,raising dynamic compression ratio, so timing needs retarding to prevent detonation. This is also why bikes in the 1980's/90's had low static compression ratio, like rd250 etc, I believe it was less than 7:1.
This video is in the category of masterclass. So much clear straight to the point information and not filled with extra fluff that "content creators" drown their videos with making them brutal to watch. Your videos are very enjoyable to watch
Dude I'm impressed. You have that motor tuned like a high end guitar. It positively screams! And don't worry about your communication skills. You make yourself understood very well. I only had to back up the video twice because I didn't understand you, but it was well worth it. Great video and one helluva bike!🤜
Just got my A85 installed and will never go back to a 66cc again. The stock power out of the box is much better. I have all the bells and whistles ready to install except for the carb. Thanks to you, that issue is solved. 🥳 Keep up the great work and you are a Pro in my book !! Dale
CC isn't everything. It's just the ports, squish gap, combustion chamber of head, pipe, carb, crank balanced or not, etc. Then of course the CC altogether.
I love this guy so much! I’ve been working on a phantom 85 build and this dudes helped me through the whole thing, sometimes when I feel lonely I just watch you’re videos bc no one is usually shares interest in these motor where I live
I hope your build went well. I just discovered this guy, and I'm impressed with the way his bike just screams! This guy knows his shit! I'm thinking of putting a Phantom 85 on a chopper frame. I just did a yd 100 on a Cranbrook, and it runs crappy. Constant 4 stroking, and so far nothing is working. I moved the needle, changed the carburetor. Nothing. Can't get the power jet to kick in. Top end speed is 28 mph. My first yd 100 got me 35 mph out of the box! I'm thinking about going back and taking off the head and checking the insides. I know I should have done that first, but I never really had to before. Again, good luck with that Phantom. I heard it's a very powerful motor and can get a wheelie from the get go. Sounds like fun!
Hey man thank you very much for the video. Just because you talk differently should never matter you are brilliant and it shows by all the information you know and how you can then tell your viewers in depth detail on how they themselves can do the same.
even tought i don't have this engine, i can clearly say this is the best guide i've seen on youtube, good job keep it up!!!!!!!!!!!, greetings from italy
Just want to say I can understand you perfectly mate and really enjoy your videos, I live with a stammer so I understand what its like for your speech not to be perfect, greetings from England
Try using minimoto exhaust expansion chambers. If you can weld you can pie cut etc for right shape to fit. When you raise exhaust port you lower compression ratio as the distance between the top of port and head is less. I raise mine about 2-3 mm! I lower inlet by the same! What is the cylinder you started with? Coated bore and enclosed transfers! All I can find is open transfer slots or cylinder with liner that makes lips.
Thanks for all the info Trent. I've had 2 Bearing Cups split and let the bearing loosen in all my years, and it still pisses me off that nobody makes a hardened seat to replace them with. Frigging wheels are expensive, and mine was the 'Heavy Duty'.(Of course you've seen my bike and I do load the baskets at times).Luckily I was just riding to the store,and not back.
Yeo u speak amazing well for somone who is deaf there wasn’t 1 word I couldn’t understand u honestly talk much better than some people on these TH-cam videos that can hear and you extremely knowledgeable never seen someone hit those kind of speeds on these bikes keep it up man 🙌🏻🙌🏻🙌🏻
This video is freaking awesome, was glued to it, I’ve watched it twice. So far I’ve built a 4 stroke beach cruiser, it looks sweet but it’s a definite putt putt, did conc sprocket after market tensioner etc, I have a mountain bike sitting that has disc brakes front shocks it’s like new, been thinking about building a 2 stroke, then I watched this video and I’m all in, nice job thank you. Want something that hits 45-50, then I’ll probably do a Felt at some point when the time and moneys right, I enjoy building as well, anyway Thanks Man 👍
Hey i love your videos im 13 i have a 50cc motorized bike because in my country 80cc is ileggal im going to be upgrading it definitly exhaust and carb and your videos are super nice thank you so much❤❤❤
You are a great engine builder I used to build race engines for gocarts and I just put a yd100 on bicycle but I will probably keep it stock I'm 64 years old but my brain wants to build it lol
Thanks - this is great! I'll be referencing this video.... Your dedication transcends and your material is not just clear but precise, and important, I would say. More of these great videos please.....
Use a pneumatic dremel that spins at ~30 000 rpm to get smooth cuts: The low rpm electric dremel catches and hooks making it jump around and difficult to control. Thx to it's higher rpms the pneumatic dremel doesn't do that. It cuts smooth. Also flap wheels work way better than cutting tools on the exhaust. Use a bench grinder to size and shape them to suit. You have to make your own small ones for the transfer ports. Smooth to 500 grit or higher. (That's where skin friction drops off) Do NOT underestimate the power of a proper Bell Mouth (Velocity Stack) on the intake. WITH a properly tuned length intake tract. Try for ram air (into the wind) but be aware that the float breather then also needs ram air and tiny bell mouth. Glass lengthwise; carbon widthwise reed valves. Stuffing the crankcase. Especially with all those balance holes. (Requires more calculation) Don't underestimate aero either. Even a small but proper aero front fairing makes a big difference. NB that the top of your wheels are moving forward at 2X the speed of the bike, Drag goes up by speed squared... So aero mudguards over the top 3rd of the wheel help more than most realise.
Thanks for posting , I got good info in the cc calculator. I don’t do much research online (which is just lazy) but you laid it out for me here; thanks. 🙏
@@trentbikes No you are incorrect. You are conflating the diaphragm design that works similar to a weak pump in response to a vacuum pulse but it definitely does not have a true fuel pump built in. You need to add an external mechanical fuel pump if you are going to run a diaphragm carb or you will suffer perpetual delivery issues as the diaphragm is in no way strong enough to work as an actual fuel pump!
@@bigcconservativeguy2534 Guess I've been doing it all wrong all along then. My weedeater engined, friction drive bike engine has been happily delivering fuel to the carb from a fuel tank set underneath it for 6 years now. Guess I'm going to have to find a "mechanical" pump... Oh that's right, pumping gasoline using vacuum pulses is what my old 2 cycle SAAB's did for 15 years of use, and most backpack leaf blowers and a lot of garden implement engines "pump gasoline" just fine using these little vacuum to mechanical pumps.
That's scary fast next to moving cars and right next to the curb. Especially when the ground is wet. I don't trust people in cars as they seem very impatient to be behind someone on a bike. They do the same thing to people in motorcycles. Stay safe brother 😊
First off just gonna say great content definitely the most informative video I’ve seen since I’ve started this hobby. I’m going to use the same carburetors set up. You have to frame restrictions and ease of tuning and was wondering how you got the throttle cable to work
I was thinking. Won't you do a rebuild on the YD100 you have? I'd like to see some performance mods implemented there now that you know more and more. I love this hobby Trent, take care.
@@Matthew-wj8cm well yea you can swap the cylinders with many different cylinders. Athena sport uses 45mm stud spacing, studs need to be drilled to like 8.5 to 9mm to fit on 8mm studs for example.
Man, when I see something like this, in a car/truck, motorcycle, and/or any other vehicle .... I'm gonna try to get new bearings because they generally are damaged if you see this? You can stick new grease & go but as long as you're there, just do it ?!! Thanks for the video, trying to navigate the small engine world & I see all sorts of deals but they seem to have bad stuff in the kit you might buy? IDKnow, I'm new & looking to not make a $400 mistake? So I'm learning w/ you today. thanks man
Wait, you're deaf? Man I wouldn't never guessed that if you didn't put on the start of this video lol, anyways what an amazing complication of info, loved this video
On vintage bikes they have cranks like this note the crank pin is far from the edge/ outside unlike modern bikes? Loads of space around the road, you can machine crank was smaller and fit stuffers in case to raise cash compression or make a shaped stuffer that clears the rod. Old Villiers 210 and bsa Bantam racers swore by it. Also fill any balance holes with resin. Btw how did you get the pulse signal for the pumper cars? I was going to buy that exact one but seller said it wasn't adjustable!
Oh man. Gotta order some sealed bearing wheels. I got the rear mag still. I know the dangers but sealed bearings are great. No loosening unlike the cone nut bearing wheels. I gotta upgrade the whole frame though. I got another one for $300 and got scammed😢😢. But at least got a PWK21 in return.
@@DirectCurrent4u it's not mine. It's my friends I built that he paid for. Rear wheel hub blew waiting for replacement. I'm getting bored of the bike tbh
To be clear I don't hate it. The stinger is just too short too and it needs header. Also 150$ holy crap I should got a smolik slip flange and yz85 pro circuit pipe
Very very well done 👏 ✔️ 👍. Nice work indeed 👏. Thanks for making this video.. a lot of work ans time goes into these projects let alone making a video 📹 ❤❤❤❤❤🎉🎉🎉🎉🎉
i think for now ill keep the engine stuck or atleast put a new muffler and a carburator that one u said do u think it will go over 35-40mph stock speed?
The back wheel barrings coming loose seems to be a common problem idk if the BBR or Wheelmaster wheels are better or not haven't had a set or just a back wheel for motorized bikes yet....but something I am considering
@@DJb-ill219 Idk about bbr, I think they're fine? I would feel safer with actual sealed ball bearings, because with just balls in the hub and axle, you do have to re-tighten every once in a while, you are also tightening the balls against a race that is also a wall inside the hub. Usually you don't want to tighten it too much, nor loosen it too much, just a little bit tight while still being able to turn the axle over, without any play. Gemini wheels are $400 a set, thick and big aluminum hubs, uses actual sealed ball bearings, and looks great overall. Or buy a set for $230 from a wheelbuilder, that I know, join my discord server and you'll find him, it's Mitchell's BikeWorks. (Note I haven't bought a set from him, nor do I know anyone who uses his set, but from what he's been saying in the dms, they seem like they will last a very long time)
My yd100 vibrates a lot. In the description they said it has a balanced crank. It probably isn't so true. Also my yd doesen't want to go very high with rpm but it's totally stock so that's fine i guess.
yea they always claim things about these engines. "100cc" but is actually like 70cc or less. "balanced" but is actually like 30-45% balance factor and all that stuff.
@@trentbikes yeah yd shoud be around 78.5 cc i think. I wish i had enough stuff at home to ballance the crank myself but it's not a performance build so ill leave it as it is. My build is more like slow but got me up all hills so far.
Does the 40 to 48mm intake work for the sthil carb or do i need a different one? Im tired of messing with the hp carb so after watching ur video i think im gonna swap the carb and get a different pipe and see what that gets me
Does these modifications work for a 49cc 4-stroke? How do I make my 4-stroke go faster? I realized that many YT videos on motorized bicycles are 2-stroke friendly and not that 4-stroke friendly.
@@X1GenKaneShiroX It would be upgrading the valve springs, rockers, cam, maybe porting the ports. I can't help you with that. Idk what 4 stroke you have either, and there probably isnt any aftermarket parts for things like that
Hi I have a zeda 80cc motorized bike stock and I would like to get one banana pipe with little money and not making too much noise, what would you recommend?
Hey guys, My carburetor is leaking gas from the cover area which i think is called a float. Its the NT carburetor with the red cover. I checked my donut it has no holes and it wasn't stuck. Any advice?
@@trentbikes i don't think my smolik head has a flat squish band. Ill have to take it off and see. Its 95 degrees here in Cincinnati So hot im inside today, lol
Yeah somewhat. 35 to 40mph. It was during break in and also tuning, it probably would've hit 45 maybe 50 if it was broken in more. Regardless it wasn't that powerful and had weak acceleration
I want to correct that at 1:50, those catnip/BBR CDIs do not advance your timing at higher rpm. They retard your timing. I believe by about 20 deg.
I'm going to run a rear hub with sealed bearings... they're nice
The port map Smolik posted today on the A85 shows the ports have significant room to be raised. So to set your squish gap it would be better to space the cylinder upward and deck down the top of the cylinder until the squish is correct. (Obviously you should measure the timing of the ports in your particular cylinder before doing anything).
Do you know why they retard timing?
It is because, with an expansion chamber, at peak power they effectively supercharge the cylinder,raising dynamic compression ratio, so timing needs retarding to prevent detonation.
This is also why bikes in the 1980's/90's had low static compression ratio, like rd250 etc, I believe it was less than 7:1.
@peterjohn3180 probably. Its to safely Rev at higher rpm without advancing timing, without pre detonation. Doesn't help with gaining more rpm tho
You can advance it with low compression ratio or retard it with high CR
For being deaf, your speech is very very good brother.
I appreciate it man
I want to upgrade the carb on my 85cc but don’t know how to set the carb
This video is in the category of masterclass. So much clear straight to the point information and not filled with extra fluff that "content creators" drown their videos with making them brutal to watch. Your videos are very enjoyable to watch
Dude I'm impressed. You have that motor tuned like a high end guitar. It positively screams!
And don't worry about your communication skills. You make yourself understood very well. I only had to back up the video twice because I didn't understand you, but it was well worth it. Great video and one helluva bike!🤜
A little work an flirting with 50mph. Nicely done. The A85 being so good for its price makes high performance experimentation much more feasible.
facts
💯👍
Just got my A85 installed and will never go back to a 66cc again. The stock power out of the box is much better. I have all the bells and whistles ready to install except for the carb. Thanks to you, that issue is solved. 🥳 Keep up the great work and you are a Pro in my book !! Dale
CC isn't everything. It's just the ports, squish gap, combustion chamber of head, pipe, carb, crank balanced or not, etc. Then of course the CC altogether.
@@craigengelman1369 ok cool, so?
Your just a big poo poo pee pee diaper baby boy who can't make his own decisions without mommy. 🍼
Bro thanks for not letting speech hold you back from making videos u make good content and I understand loud n clear bud ROCK ON!!!!
I appreciate that
@@trentbikes milimyters
Dude honestly for being deaf this came out good. Got a new subscriber for not letting it hold ya back. So keep em coming😊
Your speech is actually very good, i can hear you pretty clearly actually
I love this guy so much! I’ve been working on a phantom 85 build and this dudes helped me through the whole thing, sometimes when I feel lonely I just watch you’re videos bc no one is usually shares interest in these motor where I live
I hope your build went well. I just discovered this guy, and I'm impressed with the way his bike just screams! This guy knows his shit! I'm thinking of putting a Phantom 85 on a chopper frame. I just did a yd 100 on a Cranbrook, and it runs crappy. Constant 4 stroking, and so far nothing is working. I moved the needle, changed the carburetor. Nothing. Can't get the power jet to kick in. Top end speed is 28 mph. My first yd 100 got me 35 mph out of the box! I'm thinking about going back and taking off the head and checking the insides. I know I should have done that first, but I never really had to before.
Again, good luck with that Phantom. I heard it's a very powerful motor and can get a wheelie from the get go. Sounds like fun!
Hey man thank you very much for the video. Just because you talk differently should never matter you are brilliant and it shows by all the information you know and how you can then tell your viewers in depth detail on how they themselves can do the same.
Love your content, bro keep up the good work ❤
even tought i don't have this engine, i can clearly say this is the best guide i've seen on youtube, good job keep it up!!!!!!!!!!!, greetings from italy
Thanks
Just want to say I can understand you perfectly mate and really enjoy your videos, I live with a stammer so I understand what its like for your speech not to be perfect, greetings from England
Ty
Try using minimoto exhaust expansion chambers.
If you can weld you can pie cut etc for right shape to fit.
When you raise exhaust port you lower compression ratio as the distance between the top of port and head is less.
I raise mine about 2-3 mm!
I lower inlet by the same!
What is the cylinder you started with?
Coated bore and enclosed transfers!
All I can find is open transfer slots or cylinder with liner that makes lips.
That WEN 23103 rotary tool is freaking fantastic. I have it and its treated me so well. Its like 1/4 the price of a dremel name brand
Holy smokes mang! Great vid I learned a lot. You're going to have to start charging for high performance consultations soon.
Great video! Might I add that the fact that you can tune an engine without hearing is amazing in itself 👍
I can hear it
I never thought of that! I can't tune my yd 100 in no matter what I do, and I can hear the grass grow! 😂
Thanks for all the info Trent. I've had 2 Bearing Cups split and let the bearing loosen in all my years, and it still pisses me off that nobody makes a hardened seat to replace them with. Frigging wheels are expensive, and mine was the 'Heavy Duty'.(Of course you've seen my bike and I do load the baskets at times).Luckily I was just riding to the store,and not back.
@@bryduhbikeguy time to convert to sealed bearings like I did to my custom husky wheels
Yeo u speak amazing well for somone who is deaf there wasn’t 1 word I couldn’t understand u honestly talk much better than some people on these TH-cam videos that can hear and you extremely knowledgeable never seen someone hit those kind of speeds on these bikes keep it up man 🙌🏻🙌🏻🙌🏻
This video is freaking awesome, was glued to it, I’ve watched it twice. So far I’ve built a 4 stroke beach cruiser, it looks sweet but it’s a definite putt putt, did conc sprocket after market tensioner etc, I have a mountain bike sitting that has disc brakes front shocks it’s like new, been thinking about building a 2 stroke, then I watched this video and I’m all in, nice job thank you. Want something that hits 45-50, then I’ll probably do a Felt at some point when the time and moneys right, I enjoy building as well, anyway Thanks Man 👍
Hey i love your videos im 13 i have a 50cc motorized bike because in my country 80cc is ileggal im going to be upgrading it definitly exhaust and carb and your videos are super nice thank you so much❤❤❤
Man you are nuts to go that fast on standard bearings! Glad she didn't let go while you were going any faster.....
When you have time on the wrench you have faith in the wrench. 🔧
Well done bro your helping loads of pf people here
Thanks
You are a great engine builder I used to build race engines for gocarts and I just put a yd100 on bicycle but I will probably keep it stock I'm 64 years old but my brain wants to build it lol
Thanks - this is great! I'll be referencing this video.... Your dedication transcends and your material is not just clear but precise, and important, I would say. More of these great videos please.....
Appreciate it
Use a pneumatic dremel that spins at ~30 000 rpm to get smooth cuts:
The low rpm electric dremel catches and hooks making it jump around and difficult to control.
Thx to it's higher rpms the pneumatic dremel doesn't do that. It cuts smooth.
Also flap wheels work way better than cutting tools on the exhaust.
Use a bench grinder to size and shape them to suit.
You have to make your own small ones for the transfer ports.
Smooth to 500 grit or higher. (That's where skin friction drops off)
Do NOT underestimate the power of a proper Bell Mouth (Velocity Stack) on the intake.
WITH a properly tuned length intake tract.
Try for ram air (into the wind) but be aware that the float breather then also needs ram air and tiny bell mouth.
Glass lengthwise; carbon widthwise reed valves.
Stuffing the crankcase. Especially with all those balance holes. (Requires more calculation)
Don't underestimate aero either. Even a small but proper aero front fairing makes a big difference.
NB that the top of your wheels are moving forward at 2X the speed of the bike, Drag goes up by speed squared...
So aero mudguards over the top 3rd of the wheel help more than most realise.
Thanks for posting , I got good info in the cc calculator. I don’t do much research online (which is just lazy) but you laid it out for me here; thanks. 🙏
Welcome
Best video i've seen in Months...I watched the whole entire video....GOOD STUFF BRUH
thanks
i would recommend using a pulse pump like a lawn mower to solve the delivery issue
keep up the good work
a pumper carb already has a pulse pump built in
@@trentbikes No you are incorrect. You are conflating the diaphragm design that works similar to a weak pump in response to a vacuum pulse but it definitely does not have a true fuel pump built in. You need to add an external mechanical fuel pump if you are going to run a diaphragm carb or you will suffer perpetual delivery issues as the diaphragm is in no way strong enough to work as an actual fuel pump!
@@bigcconservativeguy2534 Guess I've been doing it all wrong all along then. My weedeater engined, friction drive bike engine has been happily delivering fuel to the carb from a fuel tank set underneath it for 6 years now.
Guess I'm going to have to find a "mechanical" pump...
Oh that's right, pumping gasoline using vacuum pulses is what my old 2 cycle SAAB's did for 15 years of use, and most backpack leaf blowers and a lot of garden implement engines "pump gasoline" just fine using these little vacuum to mechanical pumps.
That's scary fast next to moving cars and right next to the curb.
Especially when the ground is wet.
I don't trust people in cars as they seem very impatient to be behind someone on a bike.
They do the same thing to people in motorcycles.
Stay safe brother 😊
haha yea
First off just gonna say great content definitely the most informative video I’ve seen since I’ve started this hobby. I’m going to use the same carburetors set up. You have to frame restrictions and ease of tuning and was wondering how you got the throttle cable to work
thanks man.
I was thinking. Won't you do a rebuild on the YD100 you have? I'd like to see some performance mods implemented there now that you know more and more. I love this hobby Trent, take care.
I dont have the yd100 anymore
@@trentbikes ahh nvm
@@Matthew-wj8cm imo yd100s are trash. Just a 1 piece cylinder, weak, can't swap heads
@@trentbikes you can convert to Avenger/Phantom top end. That's what's attractive to me
@@Matthew-wj8cm well yea you can swap the cylinders with many different cylinders. Athena sport uses 45mm stud spacing, studs need to be drilled to like 8.5 to 9mm to fit on 8mm studs for example.
Just did my first build I’m so happy and it flies 🔥🔥🔥
60 mph on a bicycle in the rain is insane
Man, when I see something like this, in a car/truck, motorcycle, and/or any other vehicle .... I'm gonna try to get new bearings
because they generally are damaged if you see this? You can stick new grease & go but as long as you're there, just do it ?!!
Thanks for the video, trying to navigate the small engine world & I see all sorts of deals but they seem to have bad stuff in
the kit you might buy? IDKnow, I'm new & looking to not make a $400 mistake? So I'm learning w/ you today. thanks man
You need front bigger sprocket and rear smaller to get more speed but you will loose power a little
@@hffuaja200 I am aware..
Wait, you're deaf? Man I wouldn't never guessed that if you didn't put on the start of this video lol, anyways what an amazing complication of info, loved this video
One serious question: does being deaf help prevent tinnitus riding these machines?
I love this channel
appreciate it
Hey bro what engine kit do you prefer to last longer Avenger85 or BT100v2?
a85
On vintage bikes they have cranks like this note the crank pin is far from the edge/ outside unlike modern bikes?
Loads of space around the road, you can machine crank was smaller and fit stuffers in case to raise cash compression or make a shaped stuffer that clears the rod. Old Villiers 210 and bsa Bantam racers swore by it.
Also fill any balance holes with resin.
Btw how did you get the pulse signal for the pumper cars?
I was going to buy that exact one but seller said it wasn't adjustable!
crankcase pressure as I said in the video.
you need to lace a hub or just get a new wheel with sealed bearings
Great info, thank you for the video
Excellent information! Thanks.
Glad it was helpful!
I wish there was more parts availability in the uk
Nice vid bro
Oh man. Gotta order some sealed bearing wheels. I got the rear mag still. I know the dangers but sealed bearings are great. No loosening unlike the cone nut bearing wheels. I gotta upgrade the whole frame though. I got another one for $300 and got scammed😢😢. But at least got a PWK21 in return.
Yea well it's my old beach cruiser bike that I've had since october now. My second motorized bike bicycle actually
@@DirectCurrent4u it's not mine. It's my friends I built that he paid for. Rear wheel hub blew waiting for replacement. I'm getting bored of the bike tbh
@@trentbikes Thanks so much for the reply! 👍🏻
@@DirectCurrent4u my 60mph athena felt faker bike is way better than this thats ofr sure lol I have videos on it
@@trentbikes Is the Athena motor better then the Advenger?
Is the banana exhaust really bad or is it just better than the stock one? Really good videos btw 💪🏼
It is better, but you're better off with the mz65 clones as i imagine it will do way better for the price.
Don̈t get the mz65 belly pipe. Yeah it fits but header too short
To be clear I don't hate it. The stinger is just too short too and it needs header. Also 150$ holy crap I should got a smolik slip flange and yz85 pro circuit pipe
Do you have pointers on how to improve the fuel delivery system?
bigger hose, bigger ID barbs etc
How did u reach 36 stock all mines stock and I can only do 24
@@davontihernandez1249 because you're on 44T and I was on 36T.
looks good put a gasket on my upgraded head it blew up in crankcase you say no gasket needed 😮
.... with heads using o rings, no head gaskets required anymore 🤦♂️
No way your going that fast in the rain that’s crazy and thanks for the awesome video😊
You bet
Love it Man! 😂 👍
Need help, I have an oko 21mm pwk carb, and it is not sitting level for the bowl...and the bike is not running...does the bowl have to b level?
tuning, maybe too rich
@@trentbikes Its definitely too rich. But new issue. I blew my piston rings and hope I didn't blow or gouge my cylinder.
So out of all these motors being sold what would you say would be the most reliable motor I have a yd100 now thanks
Probably the avenger 85.
Very very well done 👏 ✔️ 👍. Nice work indeed 👏. Thanks for making this video.. a lot of work ans time goes into these projects let alone making a video 📹 ❤❤❤❤❤🎉🎉🎉🎉🎉
Thank you very much!
Thanks for this, I was feeling like shit before you uploaded, please keep up the great work
Welcome, feel better soon
keep up the good work bro i love your videos!!
Appreciate it!
Nibbi carbs are high quality chinesium
I need to know what cheap forks to buy for my specialized rock hopper to make my bike more comfortable to ride.
I don't really know much about bicycles. So I couldn't help. Join my discord and ask the question there (link in desc)
I made an inlet stup on cylinder by using copper pipe and liquid metal resin.
I'll try and make a video.
Thaink you bro
Thanks!
Hey appreciate it!
thanks for the tips and stuff
i think for now ill keep the engine stuck or atleast put a new muffler and a carburator that one u said do u think it will go over 35-40mph stock speed?
Probably. If you're not satisfied with the performance then go upgrade/mod it.
❤this tech video
Very informative 👏
welcome
The back wheel barrings coming loose seems to be a common problem idk if the BBR or Wheelmaster wheels are better or not haven't had a set or just a back wheel for motorized bikes yet....but something I am considering
@@DJb-ill219 Idk about bbr, I think they're fine? I would feel safer with actual sealed ball bearings, because with just balls in the hub and axle, you do have to re-tighten every once in a while, you are also tightening the balls against a race that is also a wall inside the hub. Usually you don't want to tighten it too much, nor loosen it too much, just a little bit tight while still being able to turn the axle over, without any play.
Gemini wheels are $400 a set, thick and big aluminum hubs, uses actual sealed ball bearings, and looks great overall. Or buy a set for $230 from a wheelbuilder, that I know, join my discord server and you'll find him, it's Mitchell's BikeWorks. (Note I haven't bought a set from him, nor do I know anyone who uses his set, but from what he's been saying in the dms, they seem like they will last a very long time)
I love these videos, keep it up👍 coud you do this with 80cc engine? Thanks
I mean I could do a heavily upgraded/modded one with a good pipe and all to make it a "racing" engine perhaps. In the future.
@@trentbikes that woud be awesome
My yd100 vibrates a lot. In the description they said it has a balanced crank. It probably isn't so true. Also my yd doesen't want to go very high with rpm but it's totally stock so that's fine i guess.
yea they always claim things about these engines. "100cc" but is actually like 70cc or less. "balanced" but is actually like 30-45% balance factor and all that stuff.
@@trentbikes yeah yd shoud be around 78.5 cc i think. I wish i had enough stuff at home to ballance the crank myself but it's not a performance build so ill leave it as it is. My build is more like slow but got me up all hills so far.
STEVEN HAWKENS thankyou
Is that supposed to offend me or what? lol?
Does the 40 to 48mm intake work for the sthil carb or do i need a different one? Im tired of messing with the hp carb so after watching ur video i think im gonna swap the carb and get a different pipe and see what that gets me
you can see me using it for the 090 carb...
Those are kilometers or miles an hour?
mph obviously
@@trentbikes that is really fast. Mine doesn't exceed 40kmh
Does these modifications work for a 49cc 4-stroke? How do I make my 4-stroke go faster? I realized that many YT videos on motorized bicycles are 2-stroke friendly and not that 4-stroke friendly.
@@X1GenKaneShiroX lol no
@@trentbikesHow do I make my 4-stroke go faster?
@@X1GenKaneShiroX It would be upgrading the valve springs, rockers, cam, maybe porting the ports. I can't help you with that. Idk what 4 stroke you have either, and there probably isnt any aftermarket parts for things like that
Hi I have a zeda 80cc motorized bike stock and I would like to get one banana pipe with little money and not making too much noise, what would you recommend?
Can you send link to the manifold your useing for that carb please i have same engine and like the idea of that carb thanks in advance
Just search it up, it was in the video..
So much info!!! What throttle cable do you use for the pumper carb
Just a regular cable
Hey guys, My carburetor is leaking gas from the cover area which i think is called a float. Its the NT carburetor with the red cover. I checked my donut it has no holes and it wasn't stuck. Any advice?
do you mean the bowl gasket? either a bad gasket or incorrectly seated one. even if it's a bad one you can still re-seat it and tighten it.
@@trentbikes Can we setup a video call by chance so I can explain it to show properly?
@@ayyanahmad4602 no, join my discord server (link in desc) and show videos there. We will help you.
@@trentbikes ok
I like the way you talk! ....UMMMHUMM. new sub, I wanna build one of these, 😂👊🤓
can you do a how to on that pumper carb set up? how to drill out the holes
Soon
Good video bro very informative 👍🏽😎
Appreciate it
Hi, what Brand Is that RPM/hourmeter? Thx
Runleader
Good informative video ride safe brother
Thanks
i wanna see that carb set up in part 2 i wanna give it a try give it a try
Yep recording videos of nit
One question how do you get the standard nt carbeurator to have more higher rpm ?
By upgrading the carb.
@@trentbikeswhat carb should i get ?
Your smart and funny as he!! LOL
thanks!
Are you using a phone app to test head temperature?
It was running better &.faster at 12:30 - b-4 U did Squish Gap. Twas hitting the PowerBand nice & going 60+…
that's uh... my other engine. Not the avenger 85
I think you are in km/h man 🤘🤘🤘
Lmao you joking? I guess you just have an awful perception of speed.
212cc ??
85cc
love your videos keep it up
Thanks!
Movement in real life.
Did you say the squish band in your smolik head was flat?
Yes
@@trentbikes i don't think my smolik head has a flat squish band. Ill have to take it off and see.
Its 95 degrees here in Cincinnati
So hot im inside today, lol
@@KB_Joys they have different designs for different pistons
@@trentbikes i have the avenger
On a wet road! U got balls
what engine are you using?
I said avenger 85 in the video.
Was it really that slow in stock form?
Yeah somewhat. 35 to 40mph. It was during break in and also tuning, it probably would've hit 45 maybe 50 if it was broken in more. Regardless it wasn't that powerful and had weak acceleration
@@trentbikes thanks for" the real world test" on that motor. Seems like everyone claims 50+ right out of the box lol 👍🏾😁
You went a bit fast in the beginning. There was a lot of info
yea i like to go fast nothing wrong with it
@trentbikes can you clarify on the information you said though?
might buy a 100cc or 80cc kit for my mtb but idk 100 or 80
get the avenger 85, that's the best out of the box, and that's what he's using in this video
@@midge753 alright ty
Get 2 piece cylinders instead, trust me
Make her Scream!!!!