This program calculates the
gear ratios of a motorcycle. The primary drive ratio and overall ratios for each gear are
all calculated. Just enter the data in the white boxes below, then click the
"Calculate" Button. Pressing the "Reset" button loads the default
values into the form.
Enter the Transmission ratio
Computed Overall Ratio
Use a value of 1 if the bike does not have the gear
The reset values displayed are from a 1994 FXDL Harley-Davidson Dyna Low
Rider. All late model Harley Big Twin models have similar. The Rear Wheel Sprocket can
vary, with belt drive models using a 61, 65 or 70 tooth sprocket. Below is a table of
typical values for late model Harley-Davidson motorcycles.
Ratios listed for all 2007 model HD's are overall