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Old 02-23-2011, 02:45 AM
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scotto- scotto- is offline
Custom 4-Stroke Bike Builder
Join Date: Jun 2010
Location: Ridin' inSane Diego, CA.
Posts: 6,505
Smile Re: Optimum off-road-motor bike gear ratio?

Hey there Don Redondo, welcome to the forum! It would help knowing what kind of gearbox you are running to determine what you're looking for gear ratio wise. Or are you trying to determine which type of gear box to use?

Please let us is on the way!

Side note......if you're running a 4-stroke engine, a 72 tooth rear sprocket comes too mind.

Originally Posted by dtj6ppc View Post
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

EZ Motorbike Dealer - San Diego, CA.
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Last edited by scotto-; 02-23-2011 at 02:49 AM. Reason: note
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