Daryl: I have read this: Homer said it's pivot torque that releases the club for Swinger's and torque applied to the lever assemblies that does it for Hitters. It's hinge action...zone 3!the hands that squares the club or otherwise manipulates it differently through impact.
Additional note: My source says: "my apology, it seems the word "torque" doesn't appear in TGM. This seems odd to me as it's my understanding torque is necessary to initiate a circular motion. What I was referring to is what he calls Pivot Thrust, not pivot torque, but I can't see how you can have thrust without torque in a rotating system. Help anyone? Maybe torque initiates the pivot's work but then the motion continues on its own as in a flywheel. I can see that for Swingers. With hitters the right arm thrust initiates the lever assembly's rotating motion, which, again, continues with no torque added. Maybe this is what is meant by a "freewheeling release.""
Daryl: I have read this: Homer said it's pivot torque that releases the club for Swinger's and torque applied to the lever assemblies that does it for Hitters. It's hinge action...zone 3!the hands that squares the club or otherwise manipulates it differently through impact.
Additional note: My source says: "my apology, it seems the word "torque" doesn't appear in TGM. This seems odd to me as it's my understanding torque is necessary to initiate a circular motion. What I was referring to is what he calls Pivot Thrust, not pivot torque, but I can't see how you can have thrust without torque in a rotating system. Help anyone? Maybe torque initiates the pivot's work but then the motion continues on its own as in a flywheel. I can see that for Swingers. With hitters the right arm thrust initiates the lever assembly's rotating motion, which, again, continues with no torque added. Maybe this is what is meant by a "freewheeling release.""
"Casting" is applying Torque. Dragging the Club and sensing Clubhead inertia through the #3 Pressure Point is not the same thing. We are not trying to move the Clubhead by adding pressure to one end of the shaft to move the other end of the shaft. Neither does a Hitter who uses the #1 Accumulator to Drive the Primary Lever.
When these guys use the term "Torque", be careful of their meaning. Some use the term to describe the "Flip Release" and the Flip Release can be an application of Torque. It can also produce Clubhead throwaway. The Flip Release is used by 95% of all touring Pro's who, for the most part, properly compensate for "Throw-away".
But any application of Torque leads to a "Counter-Rotation" (Clockwise) of the "Clubface" (Leading edge/Top Edge) into the Impact Interval. I don't expect you to understand this yet, but sustaining a Line of Compression requires a dual rotation through the Impact interval (two counterclockwise rotations).
The guy in the video was referring to not having to rotate (Counter-clockwise) the right wrist to square the club-face for impact but rather use body rotation and arm swing. This is "Classic" Homer Kelley.
The reason I was so excited about seeing the video, is because here's a Bio-Mechanic guy who seems to know very little about the geometry of the Golf Swing, discovering that Body Rotation and Arm Swing alone, passively Square the Clubface. This is a giant leap in discovery/knowledge for him. This guy is a thinker. Great discovery. And he didn't have to spend 30 years studying the Golfing Machine.
The way I explain McKenzie's results in every terms is that as the club is set (at transition) under the plane where the hands will move, the dragging from the hand will tend to move it back to the plane. This produces the supination of the left forearm and, if everything is time perfectly, the squaring of the clubface.
It's a nice result but from a model of the golfer/golfswing that is still simplistic in a way. We have the compute power to deal with more realistic models but this needs of course people to figure out the models. It would also be nice to check from the model how much margin of error there is in relying on a pure passive squaring of the face.
The way I explain McKenzie's results in every terms is that as the club is set (at transition) under the plane where the hands will move, the dragging from the hand will tend to move it back to the plane. This produces the supination of the left forearm and, if everything is time perfectly, the squaring of the clubface.
....
Thank you for the clarification. I don't know McKenzie's work. Forgive me for this long-winded post. It's been awhile. But hopefully you can get through this. This is so much easier to explain by "show and tell" video.
In "Golfing Machine" terms, you're describing the "Flip Release" on the Elbow Plane.
At the End of the Backstroke, when using a Shoulder Turn Takeaway, the Right Forearm has "Rotated". This results in the Right Forearm Flying Wedge being woefully misaligned to its Impact Alignment.
Now, imagine the Elbow Plane. At the End of the Backstroke, the Hands are well above the Plane. Somehow, the Hands must get down to the Elbow Plane for Impact.
Now imagine Sergio Garcia. At the End of his Backstroke, everything looks seemingly perfect. But, as he transitions to the Downstroke, his Right Forearm (look at his right Wrist), remains "Rotated". So his Right Forearm looks kind of parallel to the ground while his Clubshaft is almost vertical (on-plane and perpendicular to the base line). To most everyone, this looks normal because the Clubshaft is perfectly On-Plane. But the Clubshaft is not aligned to the Right Forearm. He must (compensation) "counter-rotate" (Clock-wise rotation) the Right Wrist so that the "Right Forearm Wedge" is On-Plane at Impact (Flip Release).
When you use the Elbow Plane, its very apparent, as you have pointed out, that the Right Forearm Wedge alignment is NOT in-line with its movement-direction (path). But this is how the Right Forearm Wedge operates. If it were in-line with its path, it would be "Right Arm Swinging".
It is true that "Dragging the Handle" will cause the Clubhead to get in-line (from being off-plane) with the Hand Path. But this also causes the "Counter-rotation" and re-aligns the Right Forearm Wedge for Impact. Dragging does not cause Release (the Pulley).
The problem is perception. If this occurs "early", at Transition, it appears that the Club was laid-off. If it occurs "Late", you think that Dragging the Club has Rotated (counter-clockwise) the Left Arm. Actually, its the Right Forearm Wedge that rotated the Left Arm.
This total concept stems from the Right Wrist Rotation at the End of the Backstroke, caused by the Shoulder Turn Takeaway. If this model is considered "normal" and is used to examine the Golf Stroke, keep in mind that you are examining a compensation.
All of this lead McKenzie to "Think" of "passive rotation". That's a giant leap. He ended up at the right place while going the wrong way. If he continues this research I think that he'll discover that the Pivot Rotation and Arm Motion truly square the clubface for impact without any need to apply torque to the Clubshaft.
From my source:
"This is interesting. I was referring to the initial torque that starts the body's pivot that sets the whole swing in a circular motion. But as I corrected myself, Mr. Kelley refers to this as Pivot Thrust not Pivot torque. It remains a mystery to me why in a system based on the physics of rotation and torque is required to initiate circular motion why the word torque doesn't appear in TGM. Perhaps your friend would like to offer an explanation."
More work for Daryl: "Air , your friend mentions right forearm torque . Ask him if the left forearm can torque while the right doesn't ( passively or actively ). And does this assume a 10-2-D grip if the answer is yes"
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