Top Speed Calculator Gear Ratio. We will get resultant gr between driver and driven gear. Choose what to calculate then fill out the remaining inputs and click calculate.
Choose what to calculate then fill out the remaining inputs and click calculate. Check compare and enter alternate tire diameter or diff ratio to compare. These resistance factors could make the top speed slower than the calculation.
Enter gear ratios primary ratio sprocket sizes and tire diameter then drag rpm slider to calculate speed from rpm.
With our rpm calculator you can calculate your engines rpm based off of your vehicles speed tire diameter rear gear ratio and transmission gear ratio. Enter the tire diameter inches or. Engine rpm or the speed at which the engine turns can be calculated at any speed given the vehicles tire size axle ratio and final transmission gear ratio. Enter transmission and rear tyre data in the yellow boxes.