Topic: Mechanisms · Ages: 12-14
Rack and pinion gear simulator in 3D: the rotation of the pinion becomes the straight-line travel of the rack, as in the steering of a car or in a machine tool. Change the module and the teeth of the pinion and see the diameter, the pitch and how far the rack moves with each turn. The pinion has involute teeth and the rack is the standard basic rack with a 20° pressure angle, so they mesh like real gears.
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