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Re: Re: Clips - hip & shoulder rotation


Posted by: Teacherman () on Thu Nov 1 13:37:18 2007


Graylon,

Good to hear a well thought out question not clouded with agenda.

As to the shoulders both tilting and rotating....it isn't possible to do AND play at a high level. The act of tilting and the act of rotating done consecutively would be an extreme example of slack or slop in a swing.

The swing must be instantaneous. The time from decision to contact must resemble the time from the decision to flip a flipper on a pinball machine to the actual flip. It is virtually instantaneous. A hitter can not be instantaneous with shoulder rotation alone, let alone tilting then shoulder rotation.

The real point is "how the shoulders move". What causes them to move? What is generating the force that moves them?

The answer is not shoulder rotation....as in a physical act of suppying power by rotating them.

They move as a result of the unstretch....or....the unwind of the upper body. A result of momentum transfer between the upper and lower halves.

The posters who give their opinion of the elasticity of human tissue are simply diverting from the issue to save face and to support a theory that is proven to not work by many many amateurs. Those posters clearly have never experienced, nor taught, a high level swing.

The upper body turned rearward against the lower body turning open creates stretch between the two hemispheres. Try it. You'll feel it. At a certain point, you'll feel the "need" for the upper to "give" (lose). And for the lower to "win". And when you time the lateral tilt the shoulders as your "go" move....the upper does give and the lower does win and the result is the cusp....the sudden change in direction and speed....the whip....of the barrel.

This is a "mechancial advantage" gained by the mechanics of separation. It is not physically possible to simply rotate the shoulders and get the same suddenness...with the same barrel speed...the same launch quickness....even when done as part of the kinetic chain.

The shoulders laterally tilt at "go" as the hands send the barrel rearward into its arc. And they are then thrust forward as a result of momentum transfer as the unwinding occurs....as the wound (separated) hemispheres reverse themselves.

The details of how this works are essential to two things...

Early batspeed.....and high (late) adjustability. Two things that have to be present in a high level swing.


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