v6 .5
GC

What it does

"Gearing Commander is a tool to calculate online the effect of changing various parts of a motorcycle's drive train."

Lot's of motorcycle owners want their bike to behave differently from stock or current setup at certain speeds or RPM. In that case there are several ways to achieve that and one of them is changing the gearing. The Gearing Commander can be used to predict the effect the change will have and thus save you spending money on the wrong parts !

Most common changes people make are different Rear Sprocket, different Front Sprocket, different rear Tire size and different Chain. Besides these you could also change the gearbox ratio's and the Primary Drive Ratio although that takes some "major surgery". The Gearing Commander's database stores all gearing specifications for over 1500 bikes and uses them to calculate speeds, RPM's, chain length etc. By selecting your bike and changing 1 or more variables you can predict the theoretical outcome without having to spent money on costly experiments !
Gearing Commander saves money :-)

Because results are calculated online using factory gear data that you can change to your current or future gear data, you can configure your bike as it currently is and configure it the way you are considering it to be and see the calculated consequences !

Using the Gearing Commander you can:

 1. See theoretical top speed of your bike in all gears for chain drive, belt drive and shaft drive bikes.
 2. See effect of sprocket changes on speed at specific RPM
 3. See effect of sprocket changes on RPM at specific speed's
 4. Compare speeds in stock, current and custom setup related to gear and RPM
 5. Compare top speeds in custom setup for 49 sprocket combinations for use on the racetrack
 6. See effect of other rear tire dimensions (for instance wider) on (top) speed and gearing
 7. Calculate Tire circumference for setting of cycle computer
 8. See effect of changes on sprocket center distance (rear wheel travel needed to tighten the chain or belt)
 9. Determine the number of links (new chain length) your chain should be to have a big enough adjustment range
10. Determine the number of teeth (new belt length) your belt should be to have a big enough adjustment range
11. Decide on whether to have a smaller front sprocket or to have a bigger rear sprocket
12. Determine the optimum tooth-links combination to minimize chain and sprocket wear
13. Turn most result tables into charts and graphs for a more visual effect of the changes
14. In Shift-Speed graph see results of changing sprockets on Shift-Speeds in all gears & setups (Speed range/gear)
15. Create custom Final Drive Ratio Chart
16. Create Overall Gearing Ratio Table to see effect of sprocket changes on overall gearing ratio
17. Create Total Gearing Ratio table which shows the effects of a different rear tire size on the Overall gearing ratio.
18. Show calculated Chain- (Cd) and Belt-diameters (Bd) in graph to see if sprockets with chain/belt will fit your bike.

All calculations are based on the specific gearing data of a bike either entered by you or loaded from the database.
All information provided is based on theoretical calculations in optimal conditions and therefore it will differ from reality. For instance all chain length calculation are without taking into account current chain wear and tension.

Also all calculations depend on the M.P.RPM entered but there is no guarantee that your bike will actually reach M.P.RPM. This depends on the power your bike delivers, the wind resistance and the way it is geared.  As all results are calculated, we do not take any speedometer or rev-counter deviations into account.
So results shown should match your GPS not your speedometer (when actually running all entered parameters).

So please use all results as guidelines rather than facts !

Gearing Commander is optimized for Edge, Internet Explorer 8 & Up and Mozilla FireFox 4 and up

Info on Motorcycle Gearing Basics

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