RCPRESS Pinion, Spur Gear and Gear Ratio for RC

A gearbox has a set of toothed wheels coupled together to change the speed of rotation. A pinion is a round gear used in the drive train. Spur gears are gears being driven in the same plane that move opposite of each other. This app tells the differences and impacts that can be made by changing the pinion or the spur gears, with the goal of changing the gear ratio.