Tamiya 89916 4-Speed Crank-Axle Gearbox Kit - Clear
This gearbox has four possible gear ratios, including the highest gear ratio of Tamiya’s gearbox series, 5402:1. The other options are 126:1, 441:1, and 1543:1. This gearbox also features a worm gear, which locks the output shaft when the motor is not turning.
| Description | Specs (7) | Pictures (0) | Resources (3) | FAQs (6) | On the blog (0) | Distributors (0) |
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General specifications
| Typical operating voltage: | 3 V |
|---|---|
| Gear ratio options: | 126, 441, 1543, 5402 :1 |
| No-load motor shaft speed @ 3V: | 12300 rpm1 |
| No-load current @ 3V: | 150 mA2 |
| Stall current @ 3V: | 2100 mA |
| Motor shaft stall torque @ 3V: | 0.5 oz·in3 |
| 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.
- 3
- A theoretical torque of the gearbox output shaft can be computed by multiplying this torque by the gear ratio.
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