Model: UK032 Hypocycloid Two-gear Straight-line Mechanism
When the small gear is half the diameter of the large gear, a point on the circumference of the small gear will trace a perfect straight line. Model S-16 in the Reuleaux Collection also illustrates this mathematical principle (by this model, the student Carl Benz learned together with his professor Redtenbacher) .

Francis Moon 2005-00-00

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