Post by imperfectgolfer on Aug 6, 2012 9:02:14 GMT -5
Jeffy has become enamored by the idea of generating what he calls a "shut-to-open" clubface motion through the impact zone. He apparently believes that this type of motion represents the optimum hand release action. I think that he is totally wrong.
Jeffy apparently believes that a golfer must close the clubface to the clubhead arc in the mid-downswing-to-early phase of the late downswing and then simply rotate the body/arms into impact during the later downswing. To get an open clubface after impact, one would have to pronate the left forearm through impact, but he has never demonstrated that biomechanical phenomenon happening in professional golfers.
Consider this Jeffy forum thread.
jeffygolf.com/showthread.php?412-David-Toms-shut-to-open-or-just-a-toe-hit
He seemingly is implying that DT is using a "shut-to-open" release technique. I think that's a nonsensical suggestion.
Consider DT's swing.
Consider DT's downswing action from P6 to P7.2.
Jeffy thinks that his clubface is open after impact. That's irrelevant because the clubface orinetation after impact is influenced by ball collision physics (clubshaft kick-back/kick-forward and clubface distortions secondary to an off-center hit). To consider DTs' true intent, if he was deliberately trying to open the clubface through impact (using a "closed-to-open" release technique ala Jeffy), then he should be pronating his left forearm through impact - and that is not happening.
I think that the best way to understand a golfer's intent with respect to the clubface is simply to study the motion of the FLW - because the clubface always has a "fixed" relationship to the back of the FLW (presuming a relatively neutral grip).
Note that DT's FLW is roughly parallel to the ball-target line at P6 (image 1) and his clubface is orientated accordingly (note that the toe of the club is pointing nearly straight upwards). Note how he rotates his FLW into impact between P6 and P7 and his clubface rotates accordingly. Note that his clubface faces the target at impact, as does the back of his FLW (image 3). Note that he keeps the back of his FLW facing the target between P7 and P7.2 (image 4), and there is no pronation of the left forearm happening during that time period. If there is any small degree of rotation of his FLW (and left forearm) happening during that time period, then it is a counterclockwise rotation.
Jeffy is free to promote the usefullness of KM's "shut-to-open" clubface release technique, but I think that he is stretching things to even imply that DT could be using that release technique. I think that he should study the motion of the FLW in space, and not the clubface, to better understand what is happening during a hand release action through the impact zone.
Jeff.
Jeffy apparently believes that a golfer must close the clubface to the clubhead arc in the mid-downswing-to-early phase of the late downswing and then simply rotate the body/arms into impact during the later downswing. To get an open clubface after impact, one would have to pronate the left forearm through impact, but he has never demonstrated that biomechanical phenomenon happening in professional golfers.
Consider this Jeffy forum thread.
jeffygolf.com/showthread.php?412-David-Toms-shut-to-open-or-just-a-toe-hit
He seemingly is implying that DT is using a "shut-to-open" release technique. I think that's a nonsensical suggestion.
Consider DT's swing.
Consider DT's downswing action from P6 to P7.2.
Jeffy thinks that his clubface is open after impact. That's irrelevant because the clubface orinetation after impact is influenced by ball collision physics (clubshaft kick-back/kick-forward and clubface distortions secondary to an off-center hit). To consider DTs' true intent, if he was deliberately trying to open the clubface through impact (using a "closed-to-open" release technique ala Jeffy), then he should be pronating his left forearm through impact - and that is not happening.
I think that the best way to understand a golfer's intent with respect to the clubface is simply to study the motion of the FLW - because the clubface always has a "fixed" relationship to the back of the FLW (presuming a relatively neutral grip).
Note that DT's FLW is roughly parallel to the ball-target line at P6 (image 1) and his clubface is orientated accordingly (note that the toe of the club is pointing nearly straight upwards). Note how he rotates his FLW into impact between P6 and P7 and his clubface rotates accordingly. Note that his clubface faces the target at impact, as does the back of his FLW (image 3). Note that he keeps the back of his FLW facing the target between P7 and P7.2 (image 4), and there is no pronation of the left forearm happening during that time period. If there is any small degree of rotation of his FLW (and left forearm) happening during that time period, then it is a counterclockwise rotation.
Jeffy is free to promote the usefullness of KM's "shut-to-open" clubface release technique, but I think that he is stretching things to even imply that DT could be using that release technique. I think that he should study the motion of the FLW in space, and not the clubface, to better understand what is happening during a hand release action through the impact zone.
Jeff.