Tamiya 70190 Mini Motor Multi-Ratio Gearbox (12-Speed) Kit

SKU: POLOLU-1683 Brand: Pololu

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This product has been retired. It is no longer available, but this page has been kept for reference.

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 twelve possible gear ratio configurations: 4.6:1, 5.1:1, 9.7:1, 10.8:1, 20.4:1, 22.6:1, 42.8:1, 47.5:1, 89.9:1, 99.8:1, 188.7:1, or 209.7:1. The twelve gear ratio options give you the flexibility to choose the best speed and torque for your project. There are two possible output axle locations (only one output location is possible for any given ratio).

Parts included with the Tamiya 70190 mini motor multi-ratio gearbox (12-speed) kit with quarter for size reference.

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.

Box front for Tamiya mini motor multi-ratio gearbox (12-speed) kit.

Instructions for Tamiya mini motor multi-ratio gearbox (12-speed) kit page 4.

Box back for Tamiya mini motor multi-ratio gearbox (12-speed) kit shows the possible gear ratios in green.

Features

030-form-factor motor
- Speed @ 3 V: 8400 RPM
- Free-run current @ 3 V: 60 mA
- Stall current @ 3 V: 600 mA
- Stall torque @ 3 V: see picture to the right for torque table
12 different gear ratios, which can be adjusted by changing the pinion gear and final gear position
- 4.6:1
- 5.1:1
- 9.7:1
- 10.8:1
- 20.4:1
- 22.6:1
- 42.8:1
- 47.5:1
- 89.9:1
- 99.8:1
- 188.7:1
- 209.7:1
3 mm hexagonal output shaft compatible with Pololu's adapter for LEGO wheels and many of Tamiya’s wheels.
Two mounting orientations
Mounting holes designed to work with the Tamiya 70098 universal plate set and other Tamiya construction series products.
Transparent gear housing shows the internal mechanisms
Compact size of approximately 30 x 17 x 31 mm (1.2" x 0.7" x 1.2")

Note: The Tamiya 70190 mini motor multi-ratio gearbox (12-speed) is a kit; assembly is required.

People often buy this product together with:

Tamiya 70103 Universal Gearbox Kit

Tamiya 70105 3mm Diameter Shaft Set

Tamiya 70167 Single Gearbox (4-Speed) Kit

General specifications

Typical operating voltage:	3 V
Gear ratio options:	4.6, 5.1, 9.7, 10.8, 20.4, 22.6, 42.8, 47.5, 89.9, 99.8, 188.7, 209.7 :1
No-load motor shaft speed @ 3V:	8400 rpm¹
No-load current @ 3V:	60 mA²
Stall current @ 3V:	600 mA
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.

This product is listed in:

Retired

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