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 Topic: Sprocket change for more torque 







fontyyy

 
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fontyyy » Sun Jan 04, 2009 4:22 pm

You can't get "more torque" by changing gearing, that's not the way the laws of physics work.
Once you're up in the powerband not slipping the clutch there will be zero difference in acceleration.
The only way to make your bike faster once it's on the move, the clutch is fully released and the engine it in the powerband is to increase either the spread of power or power itself.

Acceleration will always be determined by the torque the motor makes at the revs it's running at.
So if we got two bikes runing along side each other, both with identical engines, one running 16/36 thus doing 127kph at 10,000rpm in 3rd gear and another one running 14/44 doing 127kph at 10,000rpm in 5th gear.
When both riders snap their throttles wide open, they'll accelerate at exactly the same rate, click into 4th and 6th respectively at exactly the same time and (presuming the difference in ratio step between 3rd and 4th is the same as the one between 5th and 6th) they'll continue that way until either the lower geared bike is topped out in 6th or neither will accelerate anymore.
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