What’s the best main sprocket size for drag racing ?

How small is too small when it comes to teeth count

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kitabel
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Re: What’s the best main sprocket size for drag racing ?

#16

Post by kitabel »

The RPM loss after a shift is the same on the 1-2 and the 2-3: both are bad (36.4%).
The starting line ratio should be as high numerically as possible, since it multiplies torque. The combination of 2.469:1 1st gear and 5.69:1 chain sprockets = 14:1, or 14 times your engine torque.
Ideally, you will use all 3 gears, anything else is slower.
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