Posted by: tom.guerry (tom.guerry@kp.org) on Wed Nov 28 15:03:26 2007

> >>> The key is the last quick stretch producing the stiffness/elasticity needed to jump start unloading when coil reverses. <<<
>
> Hi Tom
>
> I will make it a point to show in the clip just how much last quick stretch there is to jump start unloading when coil reverses.
>
> Jack Mankin


Jack -

I think the best way of demonstrating iobjectively the "jump start efficiency" is in terms of expected speed gains of each arc as via Zig's motionanalysis type data. The xfactor stretch is associated with efficient speed gains/summation of levers/summation of velocity via the kinetic chain or kinetic link model as opposed to overrotating the proximal hip/shoulder links or letting the transmission slip as you have described it.

Good transfer mechanics enable a sharp quick end of loading/stretch/cusp AND efficient speed gains/transformation of load into bathead angular acceleration.