Yamaha C3 close-up of the pulleys in action.
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belts a little loose there bud
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this is called centrifugal force google it thank 4 uploading this mate
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Very educational. Thanks.
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LET ME ASK SOMETHING
WHAT IS HAPPING IF THE BELT DOESNT GO FULL UNDER THE POULIE?
because when i drive 86 i feel that my engine wants to do faster but it cant
i wanna know what the reason is
SOMEBOBY PLS HELP
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Well, it's been done.
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The front gets bigger(shaft the variator is on spins the same but belt spins faster because the pulley gets bigger)the back pulley gets smaller so the back wheel can spin faster,Pretty Cool!!!!
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Its the same principle for ten speed bikes,look at it!!
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Hi everybody!
I gotta a yamaha Giggle 50 (european version)
So i removed the ring into the transmission, but i'm not satisfied of the max speed (50km/h) so, do you know if there is something else to modify or change to improve speed? (like CDI, exhaust etc)
moung06 1 year ago
This is not enough to get higher speed on a Giggle.
The C3 (american ) and Giggle (european) have different variators. European models are more restricted than american models.
You must find a way to get a C3 variator on your Giggle. Changing the exhaust or cdi would be useless without a good variator.
Your Yamaha dealer may be able to get you a C3 variator, or else, search the web.
zaran1 1 year ago
I must warn you, though: It may be illegal to go over 50 km/h on a 50cc scooter in your country. Check your local laws befor you modify your scooter.
zaran1 1 year ago
so what makes the front plates contract is the roller weights? Does the rear variator also rely on rollers or does it open as a result of the contracting front plates?
JRZRacing 3 years ago
Roller weights are pushed outwards by centrifugal force (or rotation force if you prefer), this makes the variator to contract, thus changing the ratio.
The rear pulley halves are spring loaded: the spring pushes the outer halve towards the inner halve. Thus, the movement of the rear pulley is just "following" the movement imposed by the variator (front pulley).
zaran1 3 years ago