How does a compound bow work, particularly the function of the cams and the “let off”?
In:
A compound bow is basically a bow with a pulley system. The cams are essentially the wheels of the pulley. However, in an efficient pulley, the wheels are perfectly round. The cams are not perfect circles, or at least they shouldn’t be. The irregular shape is what generates the let off you feel a full draw, due to some fancy physics.
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