I am trying to understand the release physics involved in a hitters action.
I will first start with a swinging action. My understanding is that the swing is primarily powered by the pivot action (right shoulder thrust causing the left arm to move with the pivoting upper torso initially and then independently when the pivot action subsides) - release of power accumulator number 4. That left arm pulling force causes the left arm to pull longitudinally along the clubshaft at the grip end of the club - via the hands. When the hands turn around the endless belt pulley wheel, that apparently causes the clubshaft to accelerate and the clubhead starts to move faster than the hands via the mechanism of centrifugal forces (release of power accumulator 2).
Now consider the situation with hitters. A hitter is primarily powering the swing via power accumulator number 1 - straightening of the right elbow via triceps action. This force is applied to pressure point 1 and apparently drives the primary and secondary lever assembly as an unit, and the force is applied radially to the clubshaft (instead of longitudinally). If correct, then what causes the release? What causes the clubhead to move faster than the hands? Is the endless belt pulley-accelerating phenomenon in play in this hitting action?
You use the word "in part". Is there another part (another force other than right arm thrust) uncocking the left wrist and causing the clubshaft release in a hitter's action?
Now consider the situation with hitters. A hitter is primarily powering the swing via power accumulator number 1 - straightening of the right elbow via triceps action. This force is applied to pressure point 1 and apparently drives the primary and secondary lever assembly as an unit, and the force is applied radially to the clubshaft (instead of longitudinally). If correct, then what causes the release? What causes the clubhead to move faster than the hands? Is the endless belt pulley-accelerating phenomenon in play in this hitting action?
Jeff.
Per 2-K Endless Belt vs. The Flail
Angular Motion is the result of at least two divergent forces. Such as, A)Centripetal Force (the Lever Assemblies 6-A) diverting Linear Force (Right Arm Thrust 6-B-1) into a rotating motion (Hitting 10-19-A); or B) Muscle tendons pulling the Body, the Arms, and/or the Wrists around their Centers to serve--singly or in combinations-as the axis of the flywheel formed by the selected Lever Assemblies (Swinging 10-19-C)...........
.......Both are subject to the Endless Belt Effect, per Sketch 2-K#6 and 7-23. Swingers are totally dependent on their skill at manipulating Centrifugal Force while Hitters are not.
Thanks for replying. It doesn't help me understand the hitter's release physics. I can imagine how the centripetal pull of the lever assembly causes the linear thrust of the right arm thrust (due to active straightening of the right elbow) to produce angular motion of the clubshaft. However, what controls the speed of release of the clubhead in a hitter's swing? Is it entirely due to the release of power accumulator 1, or are other factors involved. Also, how does a hitter produce a varying size of the endless belt pulley if his right arm thrust force is always linearly-directed towards the aiming point?
Thanks for replying. It doesn't help me understand the hitter's release physics. I can imagine how the centripetal pull of the lever assembly causes the linear thrust of the right arm thrust (due to active straightening of the right elbow) to produce angular motion of the clubshaft. However, what controls the speed of release of the clubhead in a hitter's swing? Is it entirely due to the release of power accumulator 1, or are other factors involved. Also, how does a hitter produce a varying size of the endless belt pulley if his right arm thrust force is always linearly-directed towards the aiming point?
Jeff.
Regulate/vary/alter the THRUST of the right elbow/tricep. But always keep in mind the 3 zones. PIVOT-ARMS-HANDS.
You use the word "in part". Is there another part (another force other than right arm thrust) uncocking the left wrist and causing the clubshaft release in a hitter's action?
Jeff.
"In part" meaning the right arm thrust is not restricted to releasing only the cocked left wrist (accumulator #2); it is simultaneously releasing accumulator #3.
I am hoping for more input on the release physics in hitters and swingers.
HK writes about the endless pulley effect whereby the clubhead speeds up when the hands are moving around the pulley. He also talks about COAM and how increasing speed of the club during the release phenomenon causes the hands to slow - unless something (another force) maintains hand speed.
Here is a graph from an article by Philip Cheetham on the transition phase of the golf swing (article found on the TPI site).
Note that arm (therefore hand) speed peaks when the hands get to waist level (roughly at the delivery position) and that arm/hand speed decreases dramatically after that period. Do you believe that the decrease in hand speed is due to COAM, and that it occurs automatically in swingers during the release phase of the downswing? Note that clubhead speed maximises at impact. I got the impression from HK's book that clubhead speed is maximum as soon as release occurs and that an additional force is necessary to maintain clubhead speed in the later release period (near-impact period). Have I misunderstood HK?
Do the hands also slow down (like this graph depicts) in hitters, or do hitters have to maintain a fast hand speed all the way to impact? If a hitter's hand speed decreases in the late downswing (as depicted in this graph), what force sustains clubhead speed (considering that centrifugal forces and the COAM phenomenon are apparently not operant in a hitting action, which is equivalent to a radial force applied to an axe-handle)?
I am hoping for more input on the release physics in hitters and swingers.
HK writes about the endless pulley effect whereby the clubhead speeds up when the hands are moving around the pulley. He also talks about COAM and how increasing speed of the club during the release phenomenon causes the hands to slow - unless something (another force) maintains hand speed.
Here is a graph from an article by Philip Cheetham on the transition phase of the golf swing (article found on the TPI site).
Note that arm (therefore hand) speed peaks when the hands get to waist level (roughly at the delivery position) and that arm/hand speed decreases dramatically after that period. Do you believe that the decrease in hand speed is due to COAM, and that it occurs automatically in swingers during the release phase of the downswing? Note that clubhead speed maximises at impact. I got the impression from HK's book that clubhead speed is maximum as soon as release occurs and that an additional force is necessary to maintain clubhead speed in the later release period (near-impact period). Have I misunderstood HK?
Do the hands also slow down (like this graph depicts) in hitters, or do hitters have to maintain a fast hand speed all the way to impact? If a hitter's hand speed decreases in the late downswing (as depicted in this graph), what force sustains clubhead speed (considering that centrifugal forces and the COAM phenomenon are apparently not operant in a hitting action, which is equivalent to a radial force applied to an axe-handle)?
Jeff.
Love the graphics and well thought out questions....maybe Ted who is the resident hitter can help us out on the hitter's dynamics.
Linear Mode
