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The primary feature of this high-efficiency gear box is a worm gear, which locks the output shaft whenever the motor isn't turning. The high gear ratios of 216:1 or 336:1 make this gearbox appropriate for small walking robots, lifting mechanisms, and other applications where high torque is desired.
The motor is rated for 3 volts but will typically work fine up to 6 volts. When using this product with the dual serial motor controller (or any motor driver based on an H-bridge), keep in mind that up to a few volts (depending on the load) are lost on the transistors of the H-bridge, so that a 4.5 volt battery delivers about 3 volts to the motors, giving them a reasonable amount of power. Motor overheating can be caused by excessive stalling, even at very low voltages. We 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.
The 4mm, round output shaft is compatible only with Tamiya's sports and narrow tyre sets. See 'Which Wheel' tab for suitable wheels type 4P for a tight fit.
(Note: This gearbox uses the RE-260RA-2295 motor variant)
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