In stock, ships same business day if ordered before 2PM
Delivered by Tue, 27th of Feb
Tamiya 70103 Universal Gearbox Kit dimensions in mm.
Tamiya 70103 universal gearbox has a thin, compact, metal frame, making it the smallest Tamiya gearbox. The final two gears are metal, making for a tough output. A worm gear allows for the high gear ratio options of 101:1, 269:1, and 719:1. The main output shaft can be oriented in four different directions, and a small, auxiliary output shaft turns perpendicularly to the main output shaft.
The output shafts are 3 mm hexagonal axles that are 10 cm (about four inches) from tip to tip. The axles work with any of the Tamiya wheels Pololu carry, giving you many options for your robot speed. The low-voltage motors run on 3-6 volts and draw up to a few amps, making them perfect candidates for the DRV8833 motor driver carrier. Motor overheating can be caused by excessive stalling, even at very low voltages. Pololu recommend that you use stall-detection sensors, or just watch your robot, to make sure that it doesn’t stall for more than a few seconds at a time. For motor specs, see the Mabuchi motor FA-130 (#18100) data sheet (58k pdf).
Note that you can replace this motor with a lower-current, higher-voltage version if you want to use this gearbox with controllers such as the qik 2s9v1 dual serial motor controller, TB6612FNG dual motor driver carrier, or Baby Orangutan B-328 robot controller.
To compare all Tamiya gear box kits, see the Tamiya Gearbox Gear Ratio Comparison.
Note: The universal gearbox kit is a kit; assembly is required. To use the kit in robotics projects, you need to connect the motors to your own robot controller.
People often buy this product together with:
|Tamiya 70110 4-Speed Crank-Axle Gearbox Kit
|Tamiya 72001 Planetary Gearbox Kit
|Tamiya 72004 Worm Gearbox Kit
|Typical operating voltage:
|Gear ratio options:
|101, 269, 719 :1
|No-load motor shaft speed @ 3V:
|No-load current @ 3V:
|Stall current @ 3V:
|Motor shaft stall torque @ 3V:
Documentation and other information
Table comparing the gear ratios available in the many different Tamiya gearboxes Pololu carry.
Adam, who posts under the username nexisnet on the Pololu forums, has performed a detailed series of experiments to determine how operating voltage affects the lifetime of the Mabuchi FA-130 motor, which happens to be the motors used in the Tamiya 70168 Double Gearbox, 70167 Single Gearbox (4-Speed), 70097 Twin-Motor Gearbox, 70093 3-Speed Crank-Axle Gearbox, 70110 4-Speed Crank-Axle Gearbox, and 70103 Universal Gearbox.
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