|
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.
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.
| Make
Model |
Engine
Sprocket |
Clutch
Sprocket |
Trans
Sprocket |
Rear Wheel Sprocket |
1st
Gear |
2nd
Gear |
3rd
Gear |
4th
Gear |
5th
Gear |
| HD FXDL
Domestic |
24 |
37 |
32 |
70 |
3.24 |
2.21 |
1.60 |
1.23 |
1.00 |
| HD FXDL
Export |
24 |
37 |
32 |
65 |
3.24 |
2.21 |
1.60 |
1.23 |
1.00 |
| HD FXDL
Australia |
24 |
37 |
32 |
61 |
3.24 |
2.21 |
1.60 |
1.23 |
1.00 |
| HD EVO 883 Sportster |
35 |
56 |
27 |
61 |
4.30 |
3.15 |
2.29 |
1.88 |
1.00 |
| HD EVO 1200 Sportster |
35 |
56 |
29 |
61 |
4.30 |
3.15 |
2.29 |
1.88 |
1.00 | | 
