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Post by imperfectgolfer on Aug 8, 2013 16:38:48 GMT -5
Virtuoso,
I think that's the key point - left wrist palmar flexion that occurs at P4 or P5.5 (when the left wrist is maximally radially deviated and when the club is constrained in space and cannot change position due to the presence of the contraining effect of the RFFW) causes clubface closure, but in the late downswing (between P6.8-P7) left wrist PF causes forward shaft lean (clubhead is behind the hands) with no clubface closure. I have now thought of an intellectual solution with respect to this controversial debate about whether early versus late left forearm supination is the major factor that causes clubface closure prior to impact in DHers who use a weak or neutral left hand grip. I plan to produce a new video on this topic in the near future.
Jeff.
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Post by virtuoso on Aug 8, 2013 16:55:09 GMT -5
Looking forward to it Jeff!
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Post by imperfectgolfer on Aug 8, 2013 20:53:49 GMT -5
I have produced a new 29 minute video that I now believe provides a very intellectually-sound explanation of the biomechanics of early left forearm supination, and how it all works in a "real life" golf swing.
My major new insight is that I now realize that even if a DHer uses an early left forearm supinatory action (which forces the left wrist into a condition of left wrist palmar flexion, which closes the clubface relative to the lower left forearm/clubhead arc) that he will still have to use a PA#3 action (late left forearm supinatory action) between P6.8 and impact - because the clubface-closing effect of left wrist palmar flexion (which maximally exists at P5.5) dissipates as the club releases and the left wrist moves from maximum radial deviation towards a neutral (uncocked) left wrist condition by impact.
Jeff.
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