We have four different types of wheels from Tamiya’s educational construction series, each of which can be connected directly to the 3 mm hexagonal axles found in many of the Tamiya gearboxes. The sports tires and the narrow tires are the only wheels compatible with the 4 mm round shafts of the Tamiya “high efficiency” gearbox series. All of the wheels have plastic hubs and high-traction rubber tires; they differ mainly in size and springiness.
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The Tamiya 70111 sports tire set contains two attractive racing-style wheels, each 56 mm in diameter and 25 mm wide. These wheels are compatible with all Tamiya gearbox kits.
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Use the pair of tires in the Tamiya 70145 narrow tire set for small and medium-sized robots that must make precise movements. With a 58 mm diameter and solid, rounded, 16 mm treads, these wheels will let your robot turn with little friction, even on rough surfaces like carpet. These wheels are compatible with all Tamiya gearbox kits.
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The two extremely springy tires in the Tamiya 70096 off-road tires set are about 50 mm in diameter and 30 mm wide. Use these if you want your robot to have a soft, air-cushioned ride across rough terrain. (Compatible with the Tamiya gearbox numbers 70093, 70097, 70103, and 70110, 70167, and 70168).
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The Tamiya 70101 truck tire set contains four 36 mm-diameter wheels with hard, rubber, 16 mm-wide treads. Our small round robot chassis is designed to use a pair of these wheels, which are great for making small robots! (Compatible with the Tamiya gearbox numbers 70093, 70097, 70103, and 70110, 70167, and 70168).
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This four-pack of 8-tooth injection-molded sprockets comes with two idler sprockets (with 1/4" holes) and two sprockets with 3-mm hexagonal holes (for use with Tamiya Gearboxes that have 3-mm hex shafts).
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