Quote:
Originally Posted by theycallmeebryan
I've got a 15/39 (2.60 final drive) setup on my Ninja 250, and in 6th gear its a 1mph per 100rpm ratio, and seems perfect.... lugging the motor a little bit, bit not that much. Leaving from a stop i have to use a bit more clutch to prevent it from bogging....I've found that cruising 55mph at 5500rpm is perfect....Thus, i'd advise you to shoot for a 1:100 ratio as well. For your bike, that would be a 15/40 setup, if you are using stock tires.
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thanks for the info. i am now thinking about trying the 15/42 gearing, with a 140/70-17 rear tire next time i need a chain. maybe this will be a good compromise for me. i do like the sound of 5500rpm at 55mph though, but i do see the point about the bogging and lugging.