The first in Tamiya's "high efficiency" series,
the planetary gearbox features two 4:1 and two 5:1 stages that can be combined
in any way you like--you can even combine two kits to get really huge gear
ratios. The output is always conveniently on the same axis as the motor shaft.
Available gear ratios are 4:1, 5:1, 16:1, 20:1, 25:1, 80:1, 100:1, and 400:1.
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 5mm, round output shaft is compatible only with
tire set and narrow tire set.
The planetary gearbox is a kit; assembly is required. To use
the kit in robotics projects, you need to connect the motors to your own
robot controller. Click here
to compare these gearboxes.