1.

A simple quick return mechanism is shown in the figure. The forward to return ratio of the quick return mechanism is 2:1. If the radius of the crank O1P is 125 mm, then the distance’s’ (in mm) between the crank centre to lever pivot centre point should be.

A. 144.3
B. 216.5
C. 240
D. 250
Answer» E.


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