Tamiya 89916 4-Speed Crank-Axle Gearbox Kit - Clear

Tamiya 89916 4-Speed Crank-Axle Gearbox Kit - Clear
Pololu item #: 1679 0 in stock

This product has been discontinued.

This gearbox kit is now only available in solid gray.

This gearbox has four possible gear ratios, including the highest gear ratio of Tamiya’s gearbox series, 5402:1. The other options are 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.

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General specifications

Typical operating voltage: 3 V
Gear ratio options: 126, 441, 1543, 5402 :1
Free-run motor shaft speed @ 3V: 12300 rpm1
Free-run current @ 3V: 150 mA2
Stall current @ 3V: 2100 mA
Motor shaft stall torque @ 3V: 0.5 oz·in3
Color: clear

Notes:

1
A theoretical speed of the gearbox output shaft can be computed by dividing this speed by the gear ratio.
2
This is the no-load current of the motor when disconnected from the gears in the gearbox; the no-load current of the entire gearbox with the motor connected will be slightly higher and will vary depending on the gear ratio.
3
A theoretical torque of the gearbox output shaft can be computed by multiplying this torque by the gear ratio.