Optimum Differential Gear Ratio Calculation By Bowling

The following empirically determines the best final (differential) gear ratio to use, based on top speed MPH, tire diameter, and the RPM where the horsepower curve peaks out. Also computed is the maximum practical gear ratio to use.

Program Inputs:

Top Speed Miles Per Hour (MPH):

Tire Diameter in Inches:

RPM Where Peak Horsepower Occurs:

Press this button to submit a computation: .

To reset the form input: .

Bruce Bowling
Bowling Superior