Model: B01 Duangle in an Equilateral Triangle
This model shows that three point contact constraints will not necessarily constrain the relative motion between two bodies. The duangle is an area bounded by two arcs of a circle. This fascinating model shows that a duangle shaped shaft can rotate in a triangular shaped bearing. In this model, Reuleaux has inscribed on glass the paths of points on the duangle as they move relative to the fixed bearing.

Francis Moon 2001-00-00

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