The Tamiya 4-speed crank-axle gearbox has four possible gear ratios, including the highest gear ratio of Tamiya’s gearbox series, 5402:1, as well as 126:1, 441:1, and 1543:1. This gearbox also features a worm gear, which locks the output shaft when the motor is not turning. A clutch gear prevents the gearbox from destroying itself in case the output shaft gets stuck. The kit comes with all parts necessary to build the gearbox in any of the four possible configurations.
This 4-Speed Crank Axle Gear Box is small but has a lot of power. Two crank arms are included for added flexibility in the design of projects.
- Gear Ratios: 126:1, 441:1, 1543.5:1, 5402:1
- Motor: FA-130
- Slip clutch to protect motor from over strain