Post by imperfectgolfer on Oct 6, 2012 0:34:18 GMT -5
See this KM article on the swingplane.
www.aroundhawaii.com/lifestyle/health_and_fitness/2012-09-swing-plane-path-and-other-considerations-part-1.html
I think that KM gets so many things wrong.
Some examples.
1) Jim Furyk.
He posted this image and implied that Furyk is on-plane - presumably because an imaginary line drawn from the peripheral end of the clubshaft points at the ball-target line.
Then he posts the following photo.
KM then states-: "What about here? His right elbow is behind his body and now his club looks way too flat."
He is seemingly implying that the club is not on-plane and that the clubshaft is too flat, but I think that he is wrong because the camera angle is not perpendicular to the clubshaft in this photo, and an imaginary line drawn from the peripheral end of the clubshaft could still be pointing at the ball-target line, which means that he is still on-plane.
2) Swingplane and path.
KM states-: "What about the relationship of swing plane and club path? Conventional golf wisdom leads us to believe that if you are on the perfect plane then your swing path will be straight at the target at impact."
That's a wrongheaded belief. Swinging on-plane (per the TGM definition) only allows one to create a clubhead arc path that is symmetrical to the base of the inclined plane, and where the clubhead path at low point will be square (if timing causes the club to catch up to the left arm by low point). The clubhead path at impact will still be influenced by ball position - and be rightwards if the ball is behind low point, and be leftwards if the ball is placed ahead of low point (presuming perfect timing that {i} avoids flipping and {ii}avoids the hands getting too far ahead by impact).
3) Dustin Johnson.
He posted this photo of DJ.
www.aroundhawaii.com/assets/articles/2012/09/2659/images/p104.jpg [/img]
KM then wrote-: "Here it looks closer to the perfect plane."
I presume that he is using the term "perfect" because the clubshaft is close to being on the red line, but there is no such thing as a perfect plane. The inclined plane can vary in steepness, and being on-plane has nothing to do with clubshaft steepeness.
KM then posted this photo of DJ.
KM then stated-: "But you can clearly see his path is headed to the right."
I think that is wrong - because the peripheral end of the club is still pointing at the base of the inclined plane in this image, which means that his clubshaft is on-plane. If the clubhead path at impact is rightwards, then that is causally due to other factors - i) ball position relative to low point and ii) the degree of forward shaft lean at impact (which depends on hand position at impact and the degree of left wrist palmar flexion at impact).
Swinging on-plane only allows one to generate a clubhead arc that is symmetrical to the base of the inclined plane, and the clubhead path at low point (not impact) will be square if timing is optimum. However, the clubhead path at impact will be affected by other factors - already mentioned.
4) Mark Wilson.
KM posted this photo of MW.
KM then asked-: "Here’s Mark Wilson. Where is his path going?
Straight at target
Slightly right of target
Slightly left of target"
MW is on-plane in this image, but that doesn't predict clubhead path at impact for reasons already discussed.
KM then posts this image of MW at impact.
www.aroundhawaii.com/assets/articles/2012/09/2659/images/p27.jpg [/img]
KM stated-: "Once again, the early right shoulder internal rotation triggers early right arm extension and right wrist flexion creating the widest point in his swing arc to be just prior to impact. This takes the swing path and has it moving slightly from out-to-in or slightly to the left of his target. So the correct answer is... ”c” slightly left of target."
I think that he is flipping (note the clubshaft has backwards shaft lean) and that will cause the clubhead swingpath at impact to be directed leftwards - even with an on-plane clubshaft motion through the impact zone. I also think that flipping has no obligatory causal connection with right shoulder socket joint biomechanics.
Jeff.
www.aroundhawaii.com/lifestyle/health_and_fitness/2012-09-swing-plane-path-and-other-considerations-part-1.html
I think that KM gets so many things wrong.
Some examples.
1) Jim Furyk.
He posted this image and implied that Furyk is on-plane - presumably because an imaginary line drawn from the peripheral end of the clubshaft points at the ball-target line.
Then he posts the following photo.
KM then states-: "What about here? His right elbow is behind his body and now his club looks way too flat."
He is seemingly implying that the club is not on-plane and that the clubshaft is too flat, but I think that he is wrong because the camera angle is not perpendicular to the clubshaft in this photo, and an imaginary line drawn from the peripheral end of the clubshaft could still be pointing at the ball-target line, which means that he is still on-plane.
2) Swingplane and path.
KM states-: "What about the relationship of swing plane and club path? Conventional golf wisdom leads us to believe that if you are on the perfect plane then your swing path will be straight at the target at impact."
That's a wrongheaded belief. Swinging on-plane (per the TGM definition) only allows one to create a clubhead arc path that is symmetrical to the base of the inclined plane, and where the clubhead path at low point will be square (if timing causes the club to catch up to the left arm by low point). The clubhead path at impact will still be influenced by ball position - and be rightwards if the ball is behind low point, and be leftwards if the ball is placed ahead of low point (presuming perfect timing that {i} avoids flipping and {ii}avoids the hands getting too far ahead by impact).
3) Dustin Johnson.
He posted this photo of DJ.
www.aroundhawaii.com/assets/articles/2012/09/2659/images/p104.jpg [/img]
KM then wrote-: "Here it looks closer to the perfect plane."
I presume that he is using the term "perfect" because the clubshaft is close to being on the red line, but there is no such thing as a perfect plane. The inclined plane can vary in steepness, and being on-plane has nothing to do with clubshaft steepeness.
KM then posted this photo of DJ.
KM then stated-: "But you can clearly see his path is headed to the right."
I think that is wrong - because the peripheral end of the club is still pointing at the base of the inclined plane in this image, which means that his clubshaft is on-plane. If the clubhead path at impact is rightwards, then that is causally due to other factors - i) ball position relative to low point and ii) the degree of forward shaft lean at impact (which depends on hand position at impact and the degree of left wrist palmar flexion at impact).
Swinging on-plane only allows one to generate a clubhead arc that is symmetrical to the base of the inclined plane, and the clubhead path at low point (not impact) will be square if timing is optimum. However, the clubhead path at impact will be affected by other factors - already mentioned.
4) Mark Wilson.
KM posted this photo of MW.
KM then asked-: "Here’s Mark Wilson. Where is his path going?
Straight at target
Slightly right of target
Slightly left of target"
MW is on-plane in this image, but that doesn't predict clubhead path at impact for reasons already discussed.
KM then posts this image of MW at impact.
www.aroundhawaii.com/assets/articles/2012/09/2659/images/p27.jpg [/img]
KM stated-: "Once again, the early right shoulder internal rotation triggers early right arm extension and right wrist flexion creating the widest point in his swing arc to be just prior to impact. This takes the swing path and has it moving slightly from out-to-in or slightly to the left of his target. So the correct answer is... ”c” slightly left of target."
I think that he is flipping (note the clubshaft has backwards shaft lean) and that will cause the clubhead swingpath at impact to be directed leftwards - even with an on-plane clubshaft motion through the impact zone. I also think that flipping has no obligatory causal connection with right shoulder socket joint biomechanics.
Jeff.