Post by imperfectgolfer on Aug 4, 2012 19:41:04 GMT -5
See this Jeffy-forum thread.
jeffygolf.com/showthread.php?405-I-played-great-today!/page2
Jeffy posted this photo from 3jack's blog.
Jeffy then stated-: "The CP illustrations on the left are simply mimicking Hogan, who rotated his body better than anyone I've ever seen (the more I look at Hogan's rotation, the more remarkable it seems to be). And, of course, his path is going to be left post-impact: the arms and club have no choice.
On the right, we see what looks like a typical release of someone who stalls the hips: the arms and club have no choice but to swing out towards the target. That movement, in turn, causes the arms to roll-over. But, by then the ball is long gone, so it is impossible to say from that photo alone whether the player also rolled through impact or employed a different release style.
The "benefit" of the CP release, as spelled out by Richie, is also the primary one associated with a drive/hold release: "I believe that a CP Release also relies less on timing because the rate of closure will be less Conversely, the supposed primary disadvantage of a CF release is a faster rate of closure, which, of course, is the prime bugaboo of the roll-over release."."
On what basis does 3jack and Jeffy believe that a a CP-arm release causes a lesser amount of clubface closure through the immediate impact zone than a CF-arm release?
I think that it is fallacy to believe that a CF-er has a less stable clubface through the immediate impact zone than a CP-er. This CP/CF arm release classification refers to the arm release action through the impact zone, and not the hand release action through the impact zone.
Jeffy also posted this U-tube video by KM.
Jeffy then stated-: "The player had a bit of a rolling release, with a path that was a little too shallow and in-to-out. Naturally, he hit draws and hooks and the CP/CF theorists would say the student was CFing. Also, the Trackman theorists would say that if the player wanted to hit it straight, he needed to swing left more to "zero out" his impact."
I think that he has no rational reason to say that the student was CFing based on looking at his clubhead/clubface motion through impact. He is also incorrect to imply that all Trackman theorists believe that a golfer needs to "swing more left" after impact in order to hit the ball straight - when a golfer simply has to move the baseline of the inclined plane slightly leftwards (if one traces a SPL) if he has a negative clubhead attack angle at impact.
Jeffy also stated-: "So, what did Kelvin do? Teach him to CP (which Kel would have no idea how to do, btw)? No. Tell the student to "swing left"? Nope. Kelvin just went ahead and fixed his release by having the player supinate earlier in the downswing."
How does earlier left forearm supination fix a release? I think that the biomechanically natural way to perform a pre-impact release action (if one has a neutral grip) in order to square the clubface by impact is to simply perform a PA#3 release action efficiently.
Jeffy also stated-: "The early supination not only reduced clubface rotation through impact, it steepened the shaft?
How can early supination steepen the clubshaft? If it occurs before P6 it can steepen the shaft, but to what benefit considering the fact that the steepness of the shaft between P6.8 and P7.2 primarily depends on the accumulator #3 angle at impact.
Jeffy also made the following derogatory comments with respect to John Erickson's swing-: "I agree, he looks absurd. His body movements (the few that exist) could not be further from Hogan's."
I would like to see him support that wild belief with a solid argument and "evidentiary" support.
Jeff.
jeffygolf.com/showthread.php?405-I-played-great-today!/page2
Jeffy posted this photo from 3jack's blog.
Jeffy then stated-: "The CP illustrations on the left are simply mimicking Hogan, who rotated his body better than anyone I've ever seen (the more I look at Hogan's rotation, the more remarkable it seems to be). And, of course, his path is going to be left post-impact: the arms and club have no choice.
On the right, we see what looks like a typical release of someone who stalls the hips: the arms and club have no choice but to swing out towards the target. That movement, in turn, causes the arms to roll-over. But, by then the ball is long gone, so it is impossible to say from that photo alone whether the player also rolled through impact or employed a different release style.
The "benefit" of the CP release, as spelled out by Richie, is also the primary one associated with a drive/hold release: "I believe that a CP Release also relies less on timing because the rate of closure will be less Conversely, the supposed primary disadvantage of a CF release is a faster rate of closure, which, of course, is the prime bugaboo of the roll-over release."."
On what basis does 3jack and Jeffy believe that a a CP-arm release causes a lesser amount of clubface closure through the immediate impact zone than a CF-arm release?
I think that it is fallacy to believe that a CF-er has a less stable clubface through the immediate impact zone than a CP-er. This CP/CF arm release classification refers to the arm release action through the impact zone, and not the hand release action through the impact zone.
Jeffy also posted this U-tube video by KM.
Jeffy then stated-: "The player had a bit of a rolling release, with a path that was a little too shallow and in-to-out. Naturally, he hit draws and hooks and the CP/CF theorists would say the student was CFing. Also, the Trackman theorists would say that if the player wanted to hit it straight, he needed to swing left more to "zero out" his impact."
I think that he has no rational reason to say that the student was CFing based on looking at his clubhead/clubface motion through impact. He is also incorrect to imply that all Trackman theorists believe that a golfer needs to "swing more left" after impact in order to hit the ball straight - when a golfer simply has to move the baseline of the inclined plane slightly leftwards (if one traces a SPL) if he has a negative clubhead attack angle at impact.
Jeffy also stated-: "So, what did Kelvin do? Teach him to CP (which Kel would have no idea how to do, btw)? No. Tell the student to "swing left"? Nope. Kelvin just went ahead and fixed his release by having the player supinate earlier in the downswing."
How does earlier left forearm supination fix a release? I think that the biomechanically natural way to perform a pre-impact release action (if one has a neutral grip) in order to square the clubface by impact is to simply perform a PA#3 release action efficiently.
Jeffy also stated-: "The early supination not only reduced clubface rotation through impact, it steepened the shaft?
How can early supination steepen the clubshaft? If it occurs before P6 it can steepen the shaft, but to what benefit considering the fact that the steepness of the shaft between P6.8 and P7.2 primarily depends on the accumulator #3 angle at impact.
Jeffy also made the following derogatory comments with respect to John Erickson's swing-: "I agree, he looks absurd. His body movements (the few that exist) could not be further from Hogan's."
I would like to see him support that wild belief with a solid argument and "evidentiary" support.
Jeff.