The Pololu round robot chassis is a compact 5-inch base, laser-cut out of colored acrylic, designed for small mobile robots. This circular chassis is intended for use with the Tamiya twin-motor gearbox, ball caster, and truck tires, which you can get for a discount with our various chassis completion kits.
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- Will the Tamiya 70168 Double Gear Box fit on the Pololu Round Robot Chassis (RRC01) with no modifications?
- You can mount the double gearbox to our round robot chassis without any modifications if you use the two gear ratios that position the axle closer to the motors (344.2:1 and 38.2:1). Using the the two gear ratios that position the axle farther from the motors (114.7:1 and 12.7:1) will cause the wheels to hit the chassis. Please note that the axle of the double gearbox will not go through the center of the circular chassis; it will be slightly off-center. The chassis was designed for the twin-motor gearbox, which looks a lot like the double gearbox but does not have the same dimensions (we designed the chassis before the double gearbox existed); if you use the twin-motor gearbox, the axle will go through the center of the chassis.