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The mini-motor gearbox kit from Tamiya makes it easy to get a small robot or plastic model moving. The kit includes one motor and all the gears and parts to build any of the eight possible gear ratio configurations: 7.5:1, 9.5:1, 15.7:1, 19.9:1, 32.9:1, 41.8:1, 79.1:1, or 87.8:1. The eight 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).
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.
- 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
- 8 different gear ratios, which can be adjusted by changing the pinion gear and final gear position
- 3mm hexagonal output shaft compatible with the LEGO wheel adapter for 3mm hexagonal shaft and many of Tamiya’s wheels - see the 'Which Wheel' tab for type HEX for a tight fit.
- 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 20 x 18 x 50 mm (0.8" x 0.7" x 2")
|Typical operating voltage:||3 V|
|Gear ratio options:||7.5:1, 9.5:1, 15.7:1: 19.9:1, 32.9:1, 41.8:1, 79.0:1, and 87.8:1|
|Free-run speed @ 3V:||8400 rpm1|
|Free-run current @ 3V:||60 mA2|
|Stall current @ 3V:||600 mA|
- 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.
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