I have that same muffler on my brother's scooter I built him. The packing blew out and disintegrated in a week. I bought some replacement fiberglass packing off Amazon for about $12. Repacking it made a huge difference. Sounds pretty mellow until you go full throttle, so he can sneak through residential areas when he needs to. The small springs in your kit are purely for takeoff. They delay the clutch engagement until a higher rpm. It's the same concept as revving up an engine then dumping the clutch. I've had them on a 150cc and it was kinda annoying when you were just trying to take off slow(similar to someone slipping a clutch too much) but if you just hammered it from a stop it would pull the front wheel. Three large spring(torq-driver spring) delays the upshift of the rear pulley. In your case your engine doesn't have enough power to compress it fully, so your rear pulley never "upshifted into a higher gear", leading to lower top speed. That's useless for your application, but you could have seen some benefit(faster starts from stopped) with the 1500rpm clutch springs and the stock torq-driver spring.

I did this this today on my 72cc big bore kit Yamaha BWS/Zuma 1996, and WOW! What a difference! it really takes off now, even with the heaviest variator weights i could get.

My dude this is the only way I have found a legit way to make improvements to my 50 cc an see in advance what it would do an if it's gonna do more or less thank you n keep up the good work may I suggest other airbox type of mods that isn't a cone?

i have a 72cc kit and 1500rpm contra spring, 2000rpm clutch springs, and its awesome i love the agressive take off and the top speed is the same

Yo tanks man 4 sharing ur video. Mann. Im small kine nervous man. I neva change eh clutch spring of eh moped b4. Dis rite here goin be my first time. N ders always eh first for everything naw mean.

I have a question,if you need to replace the clutch output shaft how do you get the bearing on it

when you take off /replace the nut.lay a car wheel over the hole clutch,much easier,

Awesome video

The reason that buzzing thing happened and that the nut came off is because when it was torqued on the belt was in between keeping the outer side of the variator or the big starter gear thing from seating properly, now because the big outer variator gear thing is toques up against the belt and is not seated and centered properly, when you start driving, pressure is put on it which eventually makes it want to move out of position because the belt is rubbing against it to pull our weight, and then it either loosens too much and the starts making fun noises or even better flies off and wreaks havoc on your cvt

The clutch spring sir.. compared to the stock...is softer?

Btw. The big yellow spring is called the contra spring

The harder little clutch springs o feel would increase acceleration being it would start moving at a higher rpm and leave the stock 1500 rpm spring why didn't yall try that

Thanks

BBK next for the 50cc I suppose...

i have the same scooter and i would recomend this belt MALOSSI X SPECIAL BELT (18X9,5X680 MM 30°) and some 5g roller weights. Stock was 16seconds to 30mph and with this setup was 12 seconds to 30mph

You forgot to tune the variator weights. After I upgraded contra and clutch springs I had to add weight in the variator after that take off was a lot faster and top speed increase. I have a 50cc motor and hit 45mph gps confirmed. I have a Buddy 50 with a few mods but the motor is still stock

How do you loosen the 2 bolts to remove belt after you get cover off? They just keep spinning but won't loosen

And I tell everyone that from 49cc up to 150 they buy all these clutch kits if you're looking for top end they just slow you down you can play around with shims on your variator to get a little more low end or no shims get more top end obviously weights sliders low budget stuff

What ot keep the small yellow ones n keep stock big spring

Witam mam skuter Peugeot speedfiht 2 skuter ma części sportowe wydech yousuni napęd sportowy sprzęgło sportowe sprężynkę czerwona mianowicie tak skuter odpala z kopki jak i startera za pierwszym razem tylko coś słabo zaczol się zbierać że mogłyby się nogami odpychać dopiero od 0:20 km załapuje i leci ponad 90 nie przerywa ani nic płynnie leci pozdrawiam z góry dziękuję za komentarze

Hey! I have put a big bore kit but everything else is stock, what modes do you reccomend?

Hi guys i have 4 stroke scooter 50cc made 80cc and i want to change the springs and the rolls what spring should i get how do i know what to get i wanted to get malossi but i dont know what there are yellow ones red ones white pink please can someone tell me thanks

Okay bro try out put big bore kit and listen put 6g rollers white big spring and white 3 little springs and scooter go faster

For those springs to work its best, you need a big bore kit

The blue one is best on a 50cc try that one with 5g rollers.

Needs lighter rollers

Everybody sending your messages you probably already read all the messages stock torque spring

Go back to the stock torque spring or conscious spring leave the clutch springs alone

50cc bikes are such a waste of time