High ratio primary gears available for you boy-racers - look halfway down the page for details.
http://www.xs650.org.au/Racers.htm
http://www.xs650.org.au/Racers.htm
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xs650newb
XS650 Addict
what does a high primary gear ratio accomplish?
A higher primary drive ratio (lower numerical, i.e 2.0 instead of, say 2.50) makes the clutch and gearbox spin faster for any given crankshaft RPM. This will give two advantages:
1. Reduce the torque (load) on clutch and gearbox, reduce clutch slippage and increasing reliability, especially in tuned engines with more power and torque.
2.Makes it possible to use a larger rear sprocket, or lower cruising RPM with stock sprocket sizes. The stock sprocket is quite small already. Most all alternative rear hubs require bigger sprockets, if you should want a disc brake spoked wheel, for example.
1. Reduce the torque (load) on clutch and gearbox, reduce clutch slippage and increasing reliability, especially in tuned engines with more power and torque.
2.Makes it possible to use a larger rear sprocket, or lower cruising RPM with stock sprocket sizes. The stock sprocket is quite small already. Most all alternative rear hubs require bigger sprockets, if you should want a disc brake spoked wheel, for example.
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willyguzzi53
XS650 Addict
Some pretty cool stuff on that website.
