Tamiya 70189 Mini Motor Low-Speed Gearbox (4-Speed) Kit

Tamiya 70189 Mini Motor Low-Speed Gearbox (4-Speed) Kit
Pololu item #: 1684 7 in stock

Price break Unit price (US$)
1 10.95 15.00
10 10.45
50 9.89

backorders allowed

Tamiya’s 4-speed low-speed mini motor gearbox features a more compact 030-form-factor brushed DC motor driving a single gear train that can be assembled to have one of four gear ratios: 71.4:1, 149.9:1, 314.9:1, or 661.2:1. The gear train includes a self-locking worm gear.

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General specifications

Typical operating voltage: 3 V
Gear ratio options: 71.4, 149.9, 314.9, 661.2 :1
Free-run motor shaft speed @ 3V: 8400 rpm1
Free-run current @ 3V: 60 mA2
Stall current @ 3V: 600 mA
Color: clear


A theoretical speed of the gearbox output shaft can be computed by dividing this speed by the gear ratio.
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.