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Re: Re: Re: Re: Re: Re: Re: Re: What generates hip rotation

Posted by: Jack Mankin (MrBatspeed@aol.com) on Mon Jan 28 16:57:32 2008

>>> A couple of things I "see" on the Bonds clip are:

1- arms move as bat uncocks before shoulders begin to move ("untilt", "tilt", "rotate" depending on how you think of it - I think tilt)

2-the degree of "front side stretch" is more than would be expected if shoulders "just turned" with hips.

Shouders are tilting/or laterally tilting, nit just turning.

If they just turned, they would give the appearance of "flying open" with less "front side stretch", "pulling off the ball".

Instead, shoulder/scap action must "tilt" to support arms and forearms in torquing the handle which reactively keeps shoulders/hands back longer enabling a way of controlling the final load/coil/stretch of torso for well timed and quick acceleration with a generous contact zone for square contact.

Then the shoulders scaps need to connect to the torso as it unwinds by "spinal" rotation.

Lead arm retains CHP/string tension.<<<

Hi Tom

As I mentioned before, what you call “shoulder tilting” would be more accurately defined as the “shoulder rotation about a tilted axis”. -- As an example, suppose we placed marks across from each other on the rotor of a gyroscope. We then tilted the spin axis 40 or 50 degrees and spun the rotor. We would note that in relationship to the ground, while one mark would rotate from a lower position upward, the other would rotate from a higher position downward. – Would you refer to the motion of the marks as “tilting” or “rotation?

Jack Mankin


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