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Jan31-12, 09:47 AM
60 kph = 16.666 m/s, so wheel speed ~= 40.81 rev / sec ~= 256.41 rad / sec ~= 2448.54 rpm. With a gear ratio of 1.062:1 (engine rpm : wheel rpm), engine rpm would be about 2600 rpm at 60 kph. A gear ratio of 1.1:1 would translate into 2693 rpm at 60 kph.
Ooops! Thanks for correcting my math error, that seemed a bit low. What I get for being in a rush to get to class.
Yes so I'd think a 1:1 gear ratio i.e. direct drive would work fine.