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)|
|Typical operating voltage:||3 V|
|Gear ratio options:||126, 441, 1543, 5402 :1|
|Free-run motor shaft speed @ 3V:||12300 rpm1|
|Free-run current @ 3V:||150 mA2|
|Stall current @ 3V:||2100 mA|
|Motor shaft stall torque @ 3V:||0.5 oz·in3|
- 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.
- A theoretical torque of the gearbox output shaft can be computed by multiplying this torque by the gear ratio.