When you have the hook engaged on the d-loop,
the hook does not move.
There are several techniques to make the
hinge rotational release fire,
but no matter what technique you use,
the top of the release (ring finger groove for a 3 finger release)
MUST rotate away from the bow.
When the entire release is rotating,
then the cam is also rotating.
Remember, the edge of the cam
which is what the base of the hook rides on top of?
Well, the cam is fixed with respect to the handle.
You lock in the position. The position is adjustable,
but after you are done adjusting, you lock it in place.
So, as you rotate the handle,
then the cam also rotates with the handle.
So, the base of the hook does not move,
but as you rotate the handle, the edge of the cam
moves closer and closer to the base of the hook.
When you have sufficiently rotated the handle,
such that the base of the hook is right on the edge
of that missing "slice of pie" for the cam,
then the base of the hook falls off the "edge of the cam"
and the hook lets go of the d-loop.
The cam is no longer supporting the base of the hook,
and the hook can completely rotate and let go
of the d-loop.
Zenith Archery makes a video /DVD
which explain with pictures.
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