Elliptic Gears

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Elliptic gears can be used to transform constant rotation into nonconstant rotation. When the orange gear rotates at a constant rate the blue gear rotation is first slow and then fast.

Contributed by: Harry Calkins (March 2011)
Open content licensed under CC BY-NC-SA



Snapshot 1: The position of the gears when the red gear has rotated through and angle of 2.54 radians.

Snapshot 2: Position where the blue gear is rotating fastest.

Snapshot 3: Position where the blue gear is rotating slowest.

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