Tamiya 89914 3-Speed Crank-Axle Gearbox Kit - Clear
Tamiya’s 3-speed crank-axle gearbox looks very much like half of the twin-motor gearbox (with an added gear ratio option). This compact gearbox can be built in one of three gear ratios (17:1, 58:1, and 204:1), and is Tamiya’s cheapest, general-purpose gearbox.
| Description | Specs (7) | Pictures (0) | Resources (3) | FAQs (6) | On the blog (0) |
|---|
General specifications
| Typical operating voltage: | 3 V |
|---|---|
| Gear ratio options: | 17, 58, 204 :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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