How to Tune a 150cc GY6 CVT - Main Clutch Spring and Variator Weights
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- Опубликовано: 1 окт 2024
- Today I go in depth on how you can tune your gy6 150cc cvt or/and variator. How you can tune the variator roller weights, and ugrade the clutch springs; All of this to provide better performance. Will work on 50cc scooters, tao tao, honda ruckus, go karts; 150cc scooters, buggy, atv, quad; Bms sand viper 150, trailmaster xrs 150. 250cc scooters and buggies, and 300cc.
The process should work on anything with a cvt. And If it doesn't you can at least find this video helpful!
Skip points:
(Watch till the end)
01:19 Upgrading the clutch Spring
04:25 Mini Clutch springs
04:41 Variator in detail and roller weight tunning
6:50 Assembly
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I have an issue with my 250cc scooter. When I go to take off it jerks a lot until I get going a bit. I have replaced my variator and belt. At first it stopped jerking but after a bit it went back to the old problem. Any idea what it could be? Could it be the clutch spring? I have not messed with that yet. Any advice is greatly appreciated.
Thank you, George
Hey I have a fax 400 fang power predator Utv I’m trying to upgrade the clutch to get more torque any suggestions?
Is it possible to use a combination of different rollers such as 13 grams mixed in with like 16 grams?
Note: WHEN you break one of the fins,you *MUST* (ºº)lol BREAK the opposing one by the SAME amount,to maintain balance;
id say you would at least have to break every other one for it to truly even out, or each one the same amount, lol 😂
Only watched two minutes and already this is the BEST video on this subject by far! Thank You!
with some weights,
those weights are not suppose to be just dropped in any ol way,there is a right and wrong way for the direction of the rollers to be set in,If there is a side that is showing more of the weight then that is the side that goes in the opposite direction the variator spins
I was thinking the same thing
those are just the round ones if they have that weird shape then it has a way to install but the regular round ones don't
Rollers can be put in anyway. Sliders have a specific way to install.
I wanna put a CVT in my wife. She needs more get up and go.
Been searching for days for this video. I need high rpm’s to get my brand new GKA200 go kart to move. It runs great under high rpm’s. I think I need lighter gram bearings. Thank you for this video.
Variator rollers dont change the top speed, thats down to the final gear.
I have a CVT rated for more power. problem is, it's splined. I cant attach it to my engine. because my engine's shaft has keyway instead of splines. any idea how to get around this problem? I find cvt from common torque converters wear down pretty quick.
200 sub special?
A tip for spring mounting is make a 2x4 spring presser out of scrap lumber and mount it to a wall or the side of your deck. They work great, I have a small one for the scoots clutch spring and I have a large one for doing car shock springs.
Bro I have been scouring youtube for info about gy6 ruckus CVTs and this is the best layman's breakdown I've come across on the subject so far. Awesome work man, thanks!
Good kid. Mostly right, but He's wrong though. Springs and rollers won't limit top speed ever. Impossible.
RPM default under loading is changed only. So, to be clear.... more acceleration with stronger spring and lighter rollers (never reduces top speed), higher top speed with weaker spring and heavier rollers.
Reported top speed losses are due to new parts and friction changes on the belt and things like that.
Good vídeo Buddy...you touched a very good point about the roller weights...
Rollers arent something you choose for acelleration or top speed. youll get the same top speed with a lot of weights roughly around the correct weight, youll only gain top speed if you had stupidly light weights to begin with so the motor was revving way above where it makes power. fit the correct weights that keep the motor in peak power.
I hear people saying lighter weights for acceleration heavier for speed all the time. It's almost a losing battle to say otherwise
A LOT of mistakes here. the rollers go in a specific way, the best goes in a certain way.
Lots of mistakes yet your ass ain't got not one video about this SO SHUT THE FUQ UP & WATCH!
So a kid that really don't know what he's doing how to knock his brains out by taking the clutch apart standing on it
Thank you, very helpful, your awesome 💪👍
Harihariharibol newsubscriber lets c what u got best south africa
Thanks man nobody shows how to assemble the variator from scratch just waiting on my belts to come from Hawaii lol but you just gave me the confidence I needed to get back on the road. Good man
DC R Thank you for watching!! It isn't that hard. It is easy to understand how to put it back together and how to change belt and all.
Grease and clutches dont mix. That spring collar didnt need that lube, its gonna get slung out and wind up glazing pads
Yes that's right. I made a little mistake
@@VasilyBuilds hey...no critism here, ive done it too...
Why did you change back to the heavier weights?
Stiffer spring is my idea before watch this, great video
I recommend to everyone with a atv unless you drive in lakes and ponds get rid of your air box. I had one and it was limiting my atv to a crawl. Especially when it got dirty it eventually would die when given throttle. I removed it and added a pod high flow air filter. It went from dying upon take off to popping wheelies with motor power alone. This is 150cc gy6 lifan atv BTW.
Did you rejet the carb to??
@@franzpotschka8303 No the previous owner may have but I didn't notice it when I tore down carb for cleaning. The ATV was parked because they couldn't get it running right and then I got it.
i got a adly 150cc quad atv it use the gy6 150cc and im a noob at scooter engines.
stock it was limited by the cdi? atleast from what i read so a racing cdi should raise speed from stock 65kmh to 80kmh but im not sure havent tested...
and on a quad you want torque atleast a bit but i also want it to do 80kmh so its not a horrible ride on the road... i will need to test the top speed now how it does...
its all stock air box etc, just cdi changed. and a semi loose exhaust i think i will just cut it off and put a fake akrapovic that i have on it
I have a DRR 50 . I want to lower the stall so clutch engages at a lower rpm for woods riding . What set up would you recommend for my cvt ?
I recommend 1000rpm blue mini clutch springs and a 2000rpm (heaviest you can find) clutch torque spring. Because the 1000rpm will let your clutch slip pretty much at idle; good for crawling. And the 2000rpm spring so you can stay in lower gear for longer.
Leave it stock !!! The mods are all for scooters and bikes that want to go faster. We have a Hammerhead GTS150 and I will leave it bone stock as I do not need higher speed or acceleration but more torque. We use it to climb, mud-ride, etc. I might go for the 170cc BB upgrade kit at one point in life but for now all we did is to install a 26mm carb. The 24mm EPA mandated low-emission carb just gave us too many problems. The 26mm carb with its 26mm intake solved all the problems and the engine revs a little happier. Its perfectly balanced now !
@@oldwortex5818 would putting a carb like that on my adly cougar gy6 125cc do the same job ?
bruh do not use any grease!
Very helpful, thank you! You're trying 1000 subscribers lol, look how many you have now! well done!
Good video. But you didn't loosen the belt but sceezing it down in the clutch! Or sceezing the clutch down and pushing the belt close to the inside of it. Before you tightened the variator nut. So the belt doesn't get tightened in wit it. And not be able to it job!
Any reason why you went back to the original rollers? I’m new to this and I’m trying to figure out what’s the best rollers for my gy6.. what do you think?
1000 subs? Now u have 200k plus subs
DO NOT I REPEAT DO NOT USE ANY GREASE!!! THE ONLY PLACE U SHOULD USE ANY GREASE,AN A VERY SMALL AMOUNT OF HIGH TEMP GREASE IS INSIDE OF THE CLUTCH UNDER THE COLLAR ON THE PINS
thnx . from algeria i confirm ، heavy roller = more Centrifugal force= more speed
Best video on this subject hands down !! My 150 cc Lancer has a ringing (pinging?) coming from inside that housing at idle and low speed only..any guess on what is causing it ?
HI Good vid if you pulled a heavy trailer what set up would work the best thanks for any help as a bit new to this. Jeff in UK
how come im not subbed i watched your vids of the 670 buggy...
Buenas tardes disculpa necesito quitar la polea y no puedo cómo la de tengo para quitarla
Thank you for your videos. I noticed you don't have have a transmission cover assembly inside the housing either. Every other video of th GY6s looks like you have that assembly with bolts and its easy to remove. To change the gearing and check the bearings do you have to take out the motor? Seems crazy.
little sister got prety feet
Yet, You Always Got A Few That Thinks In This Case, His Sister Wearing Flip Flops To Help Him Was A Bad Ideal! Yet, She Didn't Need Her Feet! She Needed Her Hand To Put A Bolt Back On! So What If She Was Wearing Flip Flops, If That's What She Or Anyone Else Feels Comfortable In, Then So Be It! Of Course, By All Means, Keep Your Feet Decent Looking!
Lmao. At 2:20 his whole world exploded. Good job on the explanation and the video. Note to all, be careful adding too much grease as it may negate any changes you've done. You dont want most of the parts in your CVT slipping, i.e. clutch and variator have two face plates that grip the belt to operate and can slip easily if anything is on them. Even more, the clutch bell and clutch have to grip each other using brakes and slippage there can ruin performance greatly.
Hey man what size key nut 2:42
Great video. Very informative and thorough. Great job!
Great explanation man! I see you got over 230K subscribers, that’s awesome! I just got my first Kandi 150 cc and took it to the trails yesterday. It was a blast!
Hello buddy..I have a 125cc gy6 scooter and I replaced the stock spring clutch, installed a 2000rpm one, and also the 3 little springs.
Replaced the stock rollers for 13g (18x14) sliders.
But my scooter doesn't speed over 80km/h.
Should I install 1500rpm spring clutch, and lighter rollers, for better performance..?
Thanks
I think your 2000rpm spring is fine. I think you should buy a roller kit from 9g to 15g and test to see which one gives you more top end. Or maybe like an 11g
Ok thanks a lot
Rollers in these cvt systems are just like the flywheel in a car!
And any Old school Mechanic.
You can't have faster sprint and higher top speed!
U gotta choose between both options!
For better top speed i use 18 grams rollers,1000 rpm contra spring and 1000 rpm springs,my scooters runs very quiet at 40 mph and the rpm remains near 4000 rpm
Top end is easy,heavy rollers...i use dr pulley 18 grams for years,just make sure you put them in the right position..use a light contra spring and springs the same rpm as the contra spring or lower..guaranteed to work
Amazing Video, Your much appreciated.💯💯💯
Good video nicely done
I broke one of my cooling fins same as you did . Is it ok to still use it or do I have to get a new one
It is fine to use. If its more than two then replace the variatior
Thanks Brilliant
More videos please really well done and easy to follow.
Well done video young man. But Should have been titled how to change springs/weights, no tuning explained. Why were you changing parts? What did you hope to gain by the parts being changed?
I was wondering the same thing. And also what affects the heavier weights have🤔
That's a driveface not a variator, the variator is the backside with the rollers.
Nice video man where I can buy the spring?
It is vital that the belt doesn't get stained by grease
real talk: centrifugal clutch and CVT wastes a lot of torque and no weight combo on the planet is going to sustain torque at lower diameter but high RPM to do something like 55MPH on a 5% gradiant at one-mile.. A lot of hype around CVT tuning with the GY6 scene.. Low-RPM torque is pretty easy though because it's easy to get large diameter at higher RPM with most of the weights and most of the force range on the back tire especially with a stronger clutch spring..
I agree 100%. I wish i could somehow make it to where there was no cvt and only a clutch, attached directly to the crank
It's possible to mount just a sprocket in place of the CVT and have it work with the centrifugal clutch. It allows better control of the power band, but it's still a low-compression two-valve engine on a centrifugal clutch. Bore kit and shaving, porting, and polishing head is probably the tuning limit with a GY6. Small stroke and piston diameter, and they use weird alloy to make these Chinese motors so wear or cracking are too easy..
It's interesting that you say this. We have been using cvt on our snow machines for eons. Now we have them on our side by sides. There are advantages and disadvantages. But I couldn't imagine having a straight centrifugal clutch on a snowmobile. It would roast right through everything downstream from it. The cvt allows for anyone using them to tune for the best rpm for gear ratio changes. Without that... you would only Have power in a very small area of rpm/ speed
I bet the snow mobile cvt's are actually built to last. Unlike this gy6 pos. But its alright. Cvt is useful in snowmobiles, jet skis etc. were you need constant speed. For the streets, gears are the way to go!!
Vasily Custom Builds jet skis have no gears..... direct drive. Can ams... polaris rzr.... and others use cvt. But they have so much power... we blow through belts of you can't lay off the throttle.
This young man is good! Great production, explains results of using different parts.
Thanks you were very thorough in your explanations
Excellent video
Perfect! lol
i thouhg lighter weight is for increase top end speed?
8:22 100 subs then now he has more than 200k
Man I hope you can help me. I got my belt in there is this small crank solenoid that is above the variator crank top left I need to pull that out in order to get my belt over the variator so you know the belt can fit do you know if that small crank can be disassembled by hand like being unscrewed
DC R The starter motor? usually it's 2 bolts and you can pull it out. then slide the belt off the variatior. There should be videos on how to if you have a specific type of scooter or buggy
Great video. Very informative and thorough. Great job!
Thank you!!
Bad variatot and clutch cause my Hammerhead to jump forward when out into gear and stall
Awesome video bro where are you located
where are you buying this parts?
Did you ever make a follow-up?
Good explanation fella
My brother bought a rail buggy with a 150cc I believe it's a GY6. I was watching the motor on acceleration, and it moved/rocked front to back. Is this normal, or should I check to see if a mount is bad.
This 1 has a top speed of maybe 25 mph. I've not checked it with speedo on GPS via my phone.
He had another rail buggy same motor minus reverse gear and it did between 50-60 mph, but he sold it.
New sub. Thanks for any info.
From my knowledge 150cc engines are floating motors. A little rocking should be fine. Mine rocks a little. If the motion is too extreme, then there might be a problem. Thank you for watching! And thank you for your service!!
you like many are so wrong about the waights. you will in most cases loose little to no top speed with the waight being adjusted but lighter will give faster take off. now with that sed the biggest thing with them is not even looking at it that way but the fact the the thing that makes the most different is rider waight and bike waight. you will find that you need to adjust things buy trying every waight. you also may want to look into getting a racing variator and possible sliders. sliders will make shure you have the max top speed at all times. you have to rember and keep in mind a belt will move to the same place with 10 gram waights as it will with 1 so their fore common cents shows you wil have the same top speed the only thing that will change that is if the waights are not correctly tunesd you will loose top speed to do slipping. and most times when replaceing cluch springs anything over 1.5k will not be a good thing.i also would like people to no you should never go below 3 gram waights inless you have a very heavy bike and rider and no matter what you do you belt will slip so you will need to use a kavlar belt.
Ok man, I am running 11g's It has good acceleration but buggy doesn't want to "rev out". I feel maybe the rollers got stuck. But despite that I want to go lighter. Maybe try some 9g's for fast acceleration, were top speed don't matter. I try to stay away from sliders because I've heard some bad things about them. Together we weigh about 700-800pounds
all i can do is give sugestions without being their but my biggest would be buy rollers in all sizes from 3 to 14 gram and try them all to see witch best fits you. this way you can diel in the right ones. once you have that you can buy a performance variator and try sliders sliders will only work on some variators and most stock will not work with them. what will happen if they are not compatable if you will go to stop and the engine will not rev down quickly still wanting to move the bike even tho you are stopping. most people i no who work on bikes and schooter and so on have send quite a bit of money to have all the waight sizes and different sprints in order to tune things properly they also use different equipment to test things. i my self use 4 gram sliders in my heavy bike and they work great and in my lighter bike 5 gram. the ligher bike can do 4 but only in rollers the heaver bike i just got some 3gram sliders fore and have not installed yet i never ordered them before since they do push the limits with the 4 gram in that bike. i get around 8500 rpms with them and i no from friends they say you can do 9500 safly and 3 gram should give you that but if you are going down hill it will rev higher and if you rev over 10000the can hurt and damage the bike. and that you truly should not go over 8500 inless you install all performance parts like a new rocker and complete performance cvt system. my friends do a lot of drag racing and they have seen people try and cheet and have a pistem break blowing it straight out the crank case. they like to call it the decapator or the sexchange as sometimes the pisdun will come out with so much fore if you installed a big bore the can will blow out the case and up threw the seat and hit people in the nuts. some people who buy just bikes just to get one or 2 races out of boring past the max sit on metal seats and fil the under them with fome.
@@vorkev1 the amount of misspelled words is astounding. I had to re-read your comment 3 times. Thanks for the knowledge but work on your spelling. 😁
Can provide a international buying link
www.gopowersports.com Is a good website, but I dont know if they have what you are looking for
Great video saludos from mexico
In gearless scooters, Should we apply little bit of grease on rollers and roller-grooves in variator for smooth spinning of rollers in variator?
Or will it make more issues after some time like dust deposit, vibrations etc ? Please tell what should we do with proper reason.
No. No. No.
great vid good to hear your thoughs on the clutch set up thanks
Way way way too much grease
Awesome video. Thanks!
My friend thanks for your video, i have 2 questions:
1.- I have a 150cc scooter, what spring color you recommend me to use?
2.- For what reason, when I start accelerating the motorcycle, if I accelerate it quickly it starts to make small jumps, but if i accelerate slowly it does not give those little jumps a little bit. I need to purchase a new clutch?
1) Scooter is light, so I recommend Blue or Yellow
2) small jumps is most likely a clogged carburetor, it could be bad spark, or just the belt is slipping. In that case you need a new belt
@VasilyBuilds any idea why my buggy turns off when I press the gas pedal. Feels like is going but just turns off
have you tried mixing 13g with 11g (3x3)?
No. But it is not a bad Idea
That's the way to go...mix'em but in a triangle way. (One lite, one heavy, one lite, one heavy and so on...
@@QUINTADIMENSION how would this help
What's the benefits of doing that mate?
I'm really curious as if it dose anything I'll do it to my adly cougar 125cc
Stiffer spring is my idea before watch this, great video
Awesome bro, thank you
Thanks, it helped. Love the channel
Does any fluid goes in them trans and if so how to check what kind and where to put it in at
Yes. There should be a fluid fill bolt and drain bolt. If not you might have to take the seals apart. Usually you fill the fluid with anything, becuase it is a cheap engine. Atf fluid is the best
hope this is the place to put this. i have transplanted a cn 250 out of a 2015 kandi buggy in to a 800 lb gem car golf cart, i ordered a red shorty spring and 19 gram weights and the cart seems to have slowed a lot at take off rpm high and it takes a while to get up to speed the mile an hour is a little slower about 38 mph. with stock weights and spring it took off alt faster and topped out at 42 mph. where did i go wrong. any help will be thankful. Doc
"Just a lil bit is good".... Ugaduga ugaduga ugaduga ugaduga ugaduga ugaduga ugaduga ugaduga. I love it man, so great. 😂😂😂
😂😂
A site where i can buy all these stuff?
aliexpress
What're the torque specs for the variator and clutch?
All the ugga duggas it dont really matter
Great video bro 👏👏👏
Thanks!!
Good job !!!
shoulda put sliders, not rollers in.
People have mixed opinions on them
I gotta question if you turn the clutch should the wheels turn forward I'm having too push my buggy to start
Only if the buggy is in forward or reverse. If it is in neutral it shouldn't
It only has forward and it moves a little evrey full turn
@@Backroadmuscle Yes that is because of gear ratio reduction.should be normal
Thank u now I'm not so worried
What is the top speed now ?
Bedri Yagci It's like 2-3 miles more. Not much probably like 29mph
Thank you for your quick reply. I have a question for you.
I have my 2012 model, 150cc, 250 kg odes brand utv. Utvs 61mm big bore kit, a12 camshaft, big jets, performance air filter, and j.costa front variator but back clutch is stock. It's driving 47 miles. But I want to do more speed. I want to change the back clutch springs. I have blue, yellow and red springs. what color springs should I wear for more speed?
Bedri Yagci those springs will not do anything. Maybe try a smaller sprocket
More weight is for speed o force ??
You have to tune it yourself and see. Depends on the application. This is a very picky subject. Because heavier can do more top speed, but too much and it can decrease it
Great video.
Thank You
Great video! Keep up the good work!
Not gears.
Where did you get the parts
ebay
where do u get parts??
master zero 99% are off eBay
How about carb adj
heavy roller more top speed???
No, just faster engagement
Thanks a lot, the video helped me a lot. Super.
Thomas
No problem
Thanks for the video
" theres two different gears" Wrong! there are no gears, thats the point! it wouldn't be varible if there were!
roythearcher I was just trying to make it easier to explain to the viewer. I am familiar with the concept. And I did mention the 2 gears variate
Hey man you were spot on with explaining, in your video, having two gears. Using two separate, locomotive elements, inside of the "GEAR" box ((@Roythearcher)),is what propels or pushes that back tire for forward motion. why do people ((@Roythearcher)) feel the need to act like arrogant retards... is it lack of an imagination maybe??? Dude your video was great and very informative, keep up the good info vids.
Thank you for your kind comment sir!
What size belt do u have
size 743
What spray on 5:40 ?
@Kal El thanks
Do You have a stock belt?
It's a 10$ ebay belt
What does the 150 cc scooter have to be for the ideal weight to not affect the fuel; (14 gr),
What is the benefit of extending the clutch release tnx
It shifts slower. Not really needed for a light scooter. I don';t know the ideal setup for a scooter. Ask the forums
Good video bro.thanks.
Thank you!