Posted by: tom.guerry (tom.guerry@kp.org) on Sun Jun 26 12:55:20 2005

Jack-

Thanks for the ongoing discussion.

I would think from the frame of reference that there is sequential rotation of body parts to transfer momentum that there might be different axes based on what has decelerated and what is accelerated.The hips might rotate around a spinal/central axis then decelerate as the torso stretches/coils then "rotates" (uncoils/unloads) around a higher more forward axis, then the lead arm and bat would rotate aorund a higher more forward axis prior to escape velocity of the bathead at contact.

If you take a Sosa clip,see sosa-sammy3 for example,notice that the head will continue forward well after handpath "initiation",even after front heel down,THEN the head stops its forward progress and the chin tucks (batting helmet visor tips down slightly) to stabilize a more forward axis for transfer/transformation of torso momentum into the bat as head goes up and then back a little.While head goes back,belt buckle stays forward.