The D Plane assumes that the Ball Rolls on the Clubface. Impact and separation points are always different and D Plane never assumes Max Compression.
All Hinges produce a sustained line of compression, so all hinges give maximum compression. The Angled Hinge tilts the Line of Compression.
The D Plane is a term for the plane connecting two impact vectors. It is not an analytical model. Hence, The D Plane doesn't "assume" anything.
The book clearly identifies only Horizontal Hinge Action as the ideal application of linear force, producing perfect vector alignments.
And for the record, an arched left wrist, or its equivalent, would produce more compression than The Flat Left Wrist, or its equivalent. This would, of course, "hood" the clubface, which the book suggests to avoid. Although, virtually all great ball-strikers do it.
The D Plane is a term for the plane connecting two impact vectors. It is not an analytical model. Hence, The D Plane doesn't "assume" anything.
The book clearly identifies only Horizontal Hinge Action as the ideal application of linear force, producing perfect vector alignments.
And for the record, an arched left wrist, or its equivalent, would produce more compression than The Flat Left Wrist, or its equivalent. This would, of course, "hood" the clubface, which the book suggests to avoid. Although, virtually all great ball-strikers do it.
It's clear that you have NO grasp of "compression", the "line of compression" or "sustaining the line of compression". You said: "And for the record, an arched left wrist, or its equivalent, would produce more compression than The Flat Left Wrist, or its equivalent." Are you delirious?
Furthermore, you don't have a grasp of your own beliefs. Have you read page 80 of your Bible: "The Physics of Golf"? it says:
Quote:
The Ball Slides and Rolls on the Clubface
We shall finally consider the effect of this sliding friction between the ball and the clubface. When the clubhead begins to make contact with the ball, the ball will begin to slide up the clubface, with the force between the ball and the clubface gradually increasing. The resulting frictional force on the ball will gradually give the ball a rolling motion, and when the ball is about to leave the clubface, the ball will be rolling without sliding if there has been enough friction.
It's clear that you have NO grasp of "compression", the "line of compression" or "sustaining the line of compression". You said: "And for the record, an arched left wrist, or its equivalent, would produce more compression than The Flat Left Wrist, or its equivalent." Are you delirious?
Furthermore, you don't have a grasp of your own beliefs. Have you read page 80 of your Bible: "The Physics of Golf"? it says:
Duh? "Slide, then Roll" Duh?
The equivalent of an arched left wrist would deliver less loft to the ball, which would compress the ball more than the equivalent of a flat left wrist, all else the same. That's Physics 101, right there.
Secondly, "The Physics of Golf" is not my "bible". Nice little book, but it doesn't really reveal anything new about the impact collision that wasn't shown in 68's "Search For the Perfect Swing". Jorgensen did coin the term "D Plane", however. Big deal.
Oh, and if I'm not mistaken, Homer Kelley was the one doing the "assuming" regarding the impact interval. It's not like he had a BizHub SwingVision camera shooting 10,000 frames per second out in his garage to confirm his theories.
Da Vinci understood the airplane before we could build it.
Originally Posted by Max Impact
Oh, and if I'm not mistaken, Homer Kelley was the one doing the "assuming" regarding the impact interval. It's not like he had a BizHub SwingVision camera shooting 10,000 frames per second out in his garage to confirm his theories.
The people using that BizHub really have bad explanations quite often. Dorito?
Max, are you near Philly, MNPLS., the South, Chicago? I'd love to buy you beer and just hang. Seriously.
ICT
__________________
HP, grant me the serenity to accept what I cannot change, the courage to change what I can, and the wisdom to know the difference. Progress and not perfection is the goal every day!
The equivalent of an arched left wrist would deliver less loft to the ball, which would compress the ball more than the equivalent of a flat left wrist, all else the same. That's Physics 101, right there.
Secondly, "The Physics of Golf" is not my "bible". Nice little book, but it doesn't really reveal anything new about the impact collision that wasn't shown in 68's "Search For the Perfect Swing". Jorgensen did coin the term "D Plane", however. Big deal.
1.) No Max, you're wrong again and again. You're talking about "How much" of the ball is being compressed, not higher compression.
2.) It's your "Bible". The "D Plane Gods". You know and "Pray" to Both of them. The "Path" God and the "Clubface Angle" God.
2-A RESILIENCE The response of the ball to different applications of force is the factor that determines how force must be applied to produce a desired result.................
........ Roll of the ball on the face of an inclined striker does not account for all the action produced by such an impact, especially in imparting spin to the ball. When the direction of the compressing force does not pass exactly through the center of the ball, a spin will be imparted to the ball. It will rotate on the plane of a line drawn from the line of compression to a parallel center line.
Bold by Daryl
Below, is the explanation to what Homer said in the sentence that I highlighted in bold:
Imagine drilling an off-center hole through a ball (bottom line of compression) on the line of compression and pushing a stick through it so that it sticks out both ends. This stick doesn't pass through the center of the ball. Now drill a second hole through the ball that passes through the center (Top line) and is perfectly parallel to the first hole, then insert a stick. Those two sticks represent the Spin Plane caused by the Line of Compression of that Impact. The Spin Plane is highlighted in green.
After you insert both sticks, no matter how you rotate or orient the ball, the spin plane will always be represented by those two sticks as long as "The original contact points of the Clubface and ball remain in contact throughout the entire Impact Interval". Any Impact that doesn't maintain the impact as also the separation point, unless done intentionally, is a "Mis-Hit". Furthermore, the rate of Spin is determined by the distance between those two Parallel Lines for any given Clubhead Speed.
The "Search for the Perfect Swing" does not include this information. "The Search for the Perfect Swing" and "The Physics of Golf" only outline the conditions of "Mis-Hit" Impacts.
Below, is the explanation to what Homer said in the sentence that I highlighted in bold:
Imagine drilling an off-center hole through a ball (bottom line of compression) on the line of compression and pushing a stick through it so that it sticks out both ends. This stick doesn't pass through the center of the ball. Now drill a second hole through the ball that passes through the center (Top line) and is perfectly parallel to the first hole, then insert a stick. Those two sticks represent the Spin Plane caused by the Line of Compression of that Impact. The Spin Plane is highlighted in green.
After you insert both sticks, no matter how you rotate or orient the ball, the spin plane will always be represented by those two sticks as long as "The original contact points of the Clubface and ball remain in contact throughout the entire Impact Interval". Any Impact that doesn't maintain the impact as also the separation point, unless done intentionally, is a "Mis-Hit". Furthermore, the rate of Spin is determined by the distance between those two Parallel Lines for any given Clubhead Speed.
The "Search for the Perfect Swing" does not include this information. "The Search for the Perfect Swing" and "The Physics of Golf" only outline the conditions of "Mis-Hit" Impacts.
Daryl,
Wonderful pictures.
Does the ball spin perpendicular to the spin plane, parallel to it or something else?
Hybrid Mode
