Tamiya 4-Speed Crank Axle Gear Box

Tamiya 4-Speed Crank Axle Gear Box info

This Tamiya 4-Speed Crank Axle Gear Box is small but has a lot of power. There are four gear ratios to choose from, including the slowest ratio that allows for two rotations per minute. Two crank arms are included for added flexibility in the design of projects.

Tamiya 4-Speed Crank Axle Gear Box - Technical Specifications

• Gear Ratios: 126:1, 441:1, 1543:1 or 5402:1
• Motor: FA-130
• Motor RPM: 6990-9100 (6990 Maximum Efficiency)
• Motor Voltage: 1.5-3V (1.5V Recommended) (4.5 V Max)
• Motor Current: .66A
• Motor Stall torque: 4.6 g-cm

Tamiya 4-Speed Crank Axle Gear Box - Product Description

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.

The picture below shows the contents of the clear version of the kit, which is no longer available. The components are the same for this version of the kit, except the gearbox housing pieces are solid gray.

Download Tamiya 4-Speed Crank Axle Gear Box Instructions Manuel