Making my 50cc Chinese scooter faster by changing the variator rollers

[garygrinkevich]

Speed testing in the rain! Your a madman sir doing gods work for the scooter army props.

[CRETELOVEE]

You are smart, be easy on yourself !! Best video I seen yet on detail and I know you know what your taking bout

[dapv]

I have a 50cc Gy6 and the CVT has a bushing on the case cover that is supposed to support the bendix. I had done some vatiator tuning that made electric starting non-operational and discovered the bendix to be the issue. After changing two bendix gears, replacing the bushings on both sides as well, I found there to be a spacing issue causing the bendix to be "pinched" when closing the case. I tried different combinations of loosened and tightened bolts on the cover and found that in order for the bendix to operate enough to start I would have to loosen all of the cover bolts. After riding a short distance (perhaps 2- 2.5 miles round trip) I found that standard riding conditions would rattle the bolts loose and the cover may come off entirely. To adjust I put some washers between the case cover and the mounted portion of the CVT and ran the same bolts through them, allowing me to tighten them enough into place. Because I didn't have washers between all of them, I cracked a small portion of the cover completely off by over tightening one of the bolts. Can you please cover bendix issues more thoroughly? I saw your other video on cleaning it but I think my scenario may be something that could arise with a few people. If there was a t.v. show for scoots you'd probably be Dr. House. Thanks for all the videos.

[samupk]

I just left two standard weight rollers on the table and left 4 in place. Works just fine and for free :D

[oldguy]

Great video, thanks! One of the better videos on this subject.

[asianadventurecaliforni]

Hello u just pick up 50cc tao tao how can I make it faster?do I have to buy them rollers n what size please

[kristiangronberg]

You might still want to do some fine tuning? You can mix the weights, you started with 6.5g times 6 and it gives you 39g total. If you take half of them out you will have 19.5 and that's probably litle to light and the engine probably would rev over the power band.

You got the best results with 5g weights, that might be just a little to much or a little to little. Maybe you might try with 3x5 and 3x5.5 giving you total off 31.5g off weight, the 0-30 time gets better you closer to the power band, if it's worse, you might want to try with 4.5g weights

The cvt is built so that you get the balance with 3 weights so be shore you have every other weight tge same.

All the best and keep up the good work

[flatmoonsociety]

Throwing some 3 grams in then you can pop wheelies

[გიორგიწიკლაური-ნფ]

My 50 cc moped was slow but I drilled 2 holes in muffler and now it is running 70-75km

[wackingjack]

I have lance racestar 50, using 5g weights with performance variator and performance clutch with hi flo carburetor and scooter goes 0 to 30 in 7.5 seconds with top speed around 39-40mph, I'm happy, it runs better and quicker than when new from factory!

[monty]

Hello, After putting the new carb, went back and drill out the cap, very slow.Just to find they had the idle mixture screw turn all the way in.So I've been riding around with the motor running in very lean state?I took off the cap and looked at the belt, took off the Variator and check the roller.2-5.1 and 4-5.0.Got myself a scale to check them.Added my new rollers 5.5 grams, and put the cap back and forget to tighten the nuts, my stuff is on the way to fix that.

[martyjoseph]

I was happy with my Adly Jet 50 that I bought used. However we pushed it pretty hard on some two up trips and now it seems stuck in high gear with less than 3, 000 miles on it. Going to have to dig in and see if I can get it back to where it was, good acceleration and 43 mph top speed. Looks stock to me.

[mannymoejack]

thanks Paul. I've pulled mine apart many times but still experimenting. what weight(or color) springs do you have in the rear clutch? I have three clutches each with blue, yellow, and red springs and weights from 4.5 to 9 grams. the bike is 100cc now after 2nd bbk. current setup is 8g front and yellow springs rear. my best speed so far is 53mph(when I have enough road) on level ground but dies on hills. thinking of turbo, supercharger, nitrous, octane booster, etc. just kidding, but I would like to keep up with traffic and make lights rather than try to catch up. thanks again. Mike

[hvnjyybb]

Will changing my variator weights to lighter ones affect the fuel consumption?

[williamhaskellhaskell]

Hi. I have a gy6 50cc. Stock. Would it hurt anything to run 3. 9 GM. Rollers instead of the 6. 5 GM. Rollers? Some say it would be unbalanced. And ruin the c.v.t. thank you.

[OverlandOne]

Use sliders instead of rollers and you will gain both acceleration and top speed. Also, to tune your transmission accurately, you need a tach. They are not that expensive and you can see your launch speed (Mine is 5200 rpm) and top end rpm. (mine is 8, 500.) I run a stock 49cc with a cone air filter and glass pack muffler for which I had to rejet the carb. to 32 pilot and 85 main. (You have to do plug chops to make sure you are not running too lean when you swap out the stock muffler and air box and this takes some trial and error but...you can narrow it down by reading what someone else with your engine has done.) I am running a yellow torque spring in my clutch and 6.5 gram sliders. I accelerate really well now and hit 43 mph on the gps for top end. It will go faster if I let it but I do not want to go over 8, 500 rpm as my engine has 6, 000 miles on it and...it was made in China. I could go a little heavier on the sliders but, this is fast enough on those little tires.

[forestadam]

Great video! Do you know if any of those rollers would work for my 2018 SYM Fiddle 3 200i?

[pedersen]

Can i ask what type og phoneholder you have? It looks nice and if you babye have a link for it...?😃

[mrspook]

You can buy a high performance clutch with those springs in them for 40.00 dollars and save a little money...

[drrd]

no substitute for cc's. air filter, aftermarket, 70cc head, a9 cam, open pipe, #95 main jet.40 psi tires. hold on to your handle bars.