Tamiya’s 3-speed crank-axle gearbox looks very much like half of the twin-motor gearbox (with an added gear ratio option). This compact gearbox can be built in one of three gear ratios (17:1, 58:1, and 204:1), and is an great choice for a general-purpose gearbox.
- Operating voltage: 3 V
- Gear ratio options: 17, 58, 204 :1
- Free-run motor shaft speed @ 3V: 12300 rpm
- Free-run current @ 3V: 150 mA
- Stall current @ 3V: 2100 mA
- Motor shaft stall torque @ 3V: 0.5 oz·in