70168 - DOUBLE GEARBOX LEFT/RIGHT INDEPENDENT 4-SPEED

The Tamiya #70168 double gearbox is a compact unit with two independent motors and gear trains. The kit includes two motors and all gears and parts to build any of the four possible gear ratio configurations ( 12.7: 1 38: 1 115: 1 and 344: 1) . Although it is not typical it is possible to assemble each side with different gear ratios. There are two possible output axle locations ( for any given gear ratio only one output location is possible) .

The output shafts are 3 mm hexagonal axles that are 10 cm ( about four inches) from tip to tip. The axles work with any of the Tamiya wheels we carry giving you many options for your robot speed. The lowvoltage motors run on 36 volts and draw up to a few amps. Motor overheating can be caused by excessive stalling even at very low voltages. We recommend that you use stalldetection sensors or just watch your robot to make sure that it doesn?t stall for more than a few seconds at a time.

The double gearbox is very similar to the Tamiya 70097 twinmotor gearbox. The gear ratio options of the two products complement each other well but the mounting holes and overall dimensions vary slightly. The double gearbox is shorter and wider than the twinmotor gearbox and the gears are a bit smaller and wider. This should make the double gearbox a bit more robust though we have not heard any reports of the twinmotor gearbox gears breaking.