I would like to know when the release of power accumulator #4 is complete in a swinger's swing action.
From TGM, I understand that a triple barrel swing involves the release of power accumulators 4,2,3 in that sequence. At what point in the downswing has power accumulator #4 fully released?
Consider the following graph from a paper by Phil Cheetham of TPI.
Note that pelvic rotation peaks when the lead arm is parallel to the ground in the early downswing, and shoulder rotation peaks when the hands reach waist level. After that time point, one can say that the downswing pivot action starts subsiding, which apparently is causally responsible for the release of power accumulator #4. If that is the time point when power accumulator #4 starts to release, then when is release deemed to be complete?
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