ok you guys here is my plan: 24" bmx cruiser + 41cc mitsubishi + homemade rack mount + 6 tooth pinion gear on centrifugal clutch w/3rd bearing support + 98 tooth sprocket on rear hub....16 1/3 to 1 gearing @ 7000 rpm = 30.59 mph top speed with a 22mph cruise...does that sound about right to motor around the neighborhood? any problems you see with that setup?