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Old 02-23-2011, 02:19 AM
dtj6ppc dtj6ppc is offline
Motorized Bicycle Senior Member
Join Date: Feb 2011
Location: redondo
Posts: 61
Default Optimum off-road-motor bike gear ratio?

Is there a gear ratio calculator or formula that can determine the optimal final low drive gear ratio for an off-the-road motor bike?, that will take into consideration;

-a total bike, motor, rider, and carry weight of 325 lbs

-1.6 horsepower

-7,000 max rpm

-40 percent max incline grade climb capability

-26 inch wheel diameter

-at 5mph


Last edited by dtj6ppc; 02-23-2011 at 03:03 AM.
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