Yamaha Kt100 HELP!

[Paaabz]

Hi everyone! I need help, so I started up my Yamaha kt100 kart and the starter nut came loose and clutch pieces went flying… it currently has an 11 tooth centrifugal clutch. Would I be able to use a 12 or 14 tooth clutch?

 

[panchothedog]

You can use the 12 tooth and it will be a bit higher gear ratio. Might bog
pretty bad. The 14 tooth is going to be too big of a gearing difference. Was it
geared correctly with the 11 tooth ?

 

[Paaabz]

Okay would you recommend a certain clutch?
and yes it seemed to fun well with the 11 tooth.

 

[anderkart]

Paaabz,
The https://4cycle.com/karting/ website has LOTS of good info about the various gear ratios that are common to use with KT100 powered racekarts.
At that site, simply enter 'gear ratio, kt100' into their search window to find those posts.

 

[panchothedog]

Do you know what brand the clutch was that flew off? All of my karts run torque converters so I can't help you much with that. I would think that there are clutches designed to work with that specific engine.

 

[Paaabz]

Paaabz,
The https://4cycle.com/karting/ website has LOTS of good info about the various gear ratios that are common to use with KT100 powered racekarts.
At that site, simply enter 'gear ratio, kt100' into their search window to find those posts.

Thank you!

 

[Paaabz]

Do you know what brand the clutch was that flew off? All of my karts run torque converters so I can't help you much with that. I would think that there are clutches designed to work with that specific engine.

RACING GO KART L&T 1 DISC 4 SPRING DRY CLUTCH 11 TH 219 CH YAMAHA VINTAGE PART | eBay

You are buying a used L&T 1 disc 4 spring dryclutch. 11 tooth 219 chain.For Yamaha KT100 racing engine applications. Check pictures for condition.

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