I don't know how many here are into ATV sand drag racing but here goes......
Does any one know of a math formula that help me calculate a certain
over all gear ratio to obtain a desired engine RPM at the end of a 300ft track.
If I am not explaing this correctly............... I basicly want the engine to turn a specific RPM at the end of the track.
But what do I need to calculte this Is it tranny ratio Final drive ratio Tire roll out Or do I need all of these
U need to change sprockets til u get it .lol
I calculate what MPH I need and back figure from there.
I would assume you would need max RPM at end of the track.
mph needed = rpm of rear wheel Xsprocket ratio x final drive ratio(or whatever gear you want to end up in) X crank/clutch gear ratio= motor rpm.
You also need to know circumference of rear wheel to calculate rear wheel rpm need to obtain mph needed.
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