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![Pololu 1684 - Tamiya 70189 Mini Motor Low-Speed Gearbox (4-Speed) Kit Pololu 1684 - Tamiya 70189 Mini Motor Low-Speed Gearbox (4-Speed) Kit](https://kamami.pl/8130-large_default/pololu-1684---tamiya-70189-mini-motor-low-speed-gearbox-4-speed-kit.jpg)
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Tamiya 70189 Mini Motor Low-Speed Gearbox (4-Speed) Kit
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Tamiya 70189 Mini Motor Low-Speed Gearbox (4-Speed) Kit
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 4 gear ratios: 71.4:1, 149.9:1, 314.9:1, or 661.2:1. The gear train includes a self-locking worm gear.
The mini-motor gearbox kit from Tamiya makes it easy to get a small robot or plastic model moving. The kit includes one brushed DC motor and all the gears and parts to build any of the four possible gear ratio configurations: 71.4:1, 149.9:1, 314.9:1, or 661.2:1. The four gear ratio options give you the flexibility to choose the best speed and torque for your project.
The gear train of the low-speed gearbox includes a self-locking worm gear, which means the gear train can not be back-driven (the motor can spin the output axle in both directions, but you cannot turn the output axle with your hand). Not being able to back-drive the gear train is useful when powering vehicles that stop on steep inclines, or when powering mechanisms that lift heavy objects off the ground (like gates or drawbridges).
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Parts included with the Tamiya 70189 mini motor low-speed gearbox (4-speed) kit with quarter for size reference. |
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The kit includes step-by-step illustrated instructions in both Japanese and English. A scanned copy of the instructions is available on the Pictures tab. The kit can be built with just a screwdriver, but the instructions recommend having side cutters, tweezers, and a modeling knife on hand. The gearbox kit’s motor has a 030 form factor that is smaller than the Tamiya gearboxes that use the Mabuchi FA-130 motor.
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Box back for Tamiya mini motor low-speed gearbox (4-speed) kit shows the possible gear ratios in orange. |
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Note: The Tamiya 70189 mini motor low-speed gearbox (4-speed) is a kit; assembly is required.
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