[Burner]

ALLRIGHTYTHEN
I would think the best way to apply the energy being stored in the shaft is to increase clubhead speed at impact. And that will be max'ed if the clubshaft has recovered to straight at impact.

If the the clubshaft has "recovered" at impact, or before, then throwaway is taking place as the hands and shaft are slowing to the point that they are being overtaken by the accelerating clubhead.

The "maxing" of the force generated by the pre-stressed clubshaft should, at least, remain constant and be carried through impact; only kicking in as part of the separation process, if it is to be an additional force.

I am not a golf pro, and my reply may be regarded as (more or less) qualified speculation. It would be very interesting to hear some of the TGM heavyweighters' take on these issues.

I too would like the definitive answers because I cannot for the life of me see how, despite the loading profiles given by TrueTemper etc. to the contrary, that the swing maxes a brief time before impact causing the shaft to flex, or bow, forwards. They do, however, also mention that most swings have achieved their maximum velocity some little while before impact. Thus the clubhead inertia (cause of the pre-stressed clubshaft) is being lost and "throwaway" (forward bowing of the shaft) is a consequence.