Author Topic: Clutch turn to wheel turn ratio  (Read 1214 times)

Kieren

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Clutch turn to wheel turn ratio
« on: November 22, 2009, 04:07:18 PM »
My 6 month old Kymco Super 8 50cc doesn't go over 30mph (de-restricted EVERYTHING).

It takes 19 and a bit turns of the clutch for one full revolution of the wheel.
Is this right?
Any ideas on how to reduce this number?

Shaka

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Re: Clutch turn to wheel turn ratio
« Reply #1 on: November 22, 2009, 06:29:41 PM »
I'm not sure, seems excessive!  I can check what the ratio is on my zx50 and let you know.  I'm a little curious now.  I believe the way you change that ratio is via the final reduction gears.

Shaka

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Re: Clutch turn to wheel turn ratio
« Reply #2 on: November 22, 2009, 07:00:53 PM »
I just checked mine on my zx50 and it is about 10.5:1.

Kieren

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Re: Clutch turn to wheel turn ratio
« Reply #3 on: November 22, 2009, 08:25:58 PM »
Yeah mine does seem pretty high  :-\

I've got an old Baotian engine (think its pretty much the same) will check the gears on my Kymco against the old Baotian ones to see if they'll fit.

Only ones i can see to buy are a 10% Gear up kit but are only recommend for 125cc's

EDIT:
Just an after thought, what size wheels does your bike have?
Mine has 14" which may affect gear ratios etc
« Last Edit: November 22, 2009, 08:29:10 PM by Kieren »

Shaka

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Re: Clutch turn to wheel turn ratio
« Reply #4 on: November 22, 2009, 09:30:30 PM »
Mine has a 120/70-12 rear tire, it is also a 2-stroke.  I wouldn't rely solely upon my gear ratio as a comparison.  You need to get someone with the same bike to truly compare too before you make any changes to your own.

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