RC Gear Calculator Pro app for iPhone and iPad

Easily calculate your gear ratio, and to really understand the effect of your change enter your "before and after" gears and see what percentage change it will produce, so youll know how much the new gear ratio will change your speed and acceleration and how much load it will put on the motor. Great for all types of RC racing and bashing.

Aside from the primary ratio (spur:pinion), you can also see your Final Drive Ratio (useful for all cars, but definitely for touring cars) and Rollout (useful for cars with foam tires.)

FEATURES

- Enter current gears and new gears to see both ratios and the percentage change
- Enter internal ratio to get the before-and-after Final Drive Ratio (FDR)
- Internal ratio for hundreds of cars built-in and updated regularly
- Enter before-and-after tire radius to get changes in rollout
- App remembers your entries, so you don’t need to retype them every time
- Detailed Help page describing ratios and how to use them