The endless belt, help

[O.B.Left]

Thanks Lynn

Some great links there. Some portions of which I could actually understand. I now see some errors in my earlier note. The belt represents the hands, the rpms and hand speed are assumed to be constant, the smaller the pulley the greater the clubhead speed, etc. More to come. I will continue my studies.

I am struck once again by how the golf swing is not what it first appears to be. We see the club accelerate into impact and assume it is accomplished solely with accelerating hands. Sort of like "swing up to hit up".

Am I right in thinking that the hands do accelerate but the pulley size is the more important factor in clubhead speed? Perhaps a "steady as she goes" nursing of lag pressure accompanied by a small pulley?

[Yoda]

Am I right in thinking that the hands do accelerate but the pulley size is the more important factor in clubhead speed?

The Hands do accelerate in the Start Down and Downstroke. However, due to the Law of Conservation of Angular Momentum, they actually slow down in Release as the Club accelerates (6-C-2-B). Now, only sustained Clubhead Lag Pressure will prevent a substantial loss of Clubhead speed. Use Power Package Thrust (Muscular / Hitting) or Throw-Out Action (Centrifugal / Swinging).

[lagster]

The Hands do accelerate in the Start Down and Downstroke. However, due to the Law of Conservation of Angular Momentum, they actually slow down in Release as the Club accelerates.

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Some Golf Bio-Mechanics call this the KINETIC CHAIN... various segments accelerate, then de-celerate.

[O.B.Left]

You guys are making me work. Physics is not my go to shot.

So as the radius increases the hands slow down accordingly. The Law of conservation of angular momentum. The person spinning around in their office chair slows his rpms by sticking out his legs but the surface speed of his feet increases.

In kinetic chain theory, do the segments decellerate after passing their momentum on sequencially or is the decelleration a prerequisit of the passing on of momentum? I go back and forth on whether or not to sort of slow my hips just prior to release. It seems a little more grounded and solid and my balance seems better. I used to think in terms of keeping the hips spinning long and hard. What would science have me do, Doctors?

[Zin14]

OB, another perspective on why the hands slow is that, during the release, when the left wrist is going from cocked to uncocked, there is great centrifugal force acting on the hands. The direction of this force is inline with the clubshaft and directed towards the clubhead. When the left arm is like this | , and the shaft is like this / , there is a component of this centrifugal force pointed at the ground, and another pointed away from your target. It's this latter component of centrifugal force that slows your hands as they pass from the right hip across your body toward the left hip.

During this brief interval of release, if, as Yoda suggests, you continue to apply lag pressure, you will continue to do work on the primary lever assembly, thereby increasing its angular momentum. The hands will still slow down, but the work done against this slowing force will result in greater clubhead speed at impact.