[Zin14]

Bagger,

Gotta run soon so I have to be quick. I can address more fully later.

First, the Cochran & Stobbs snippet from Search for the Perfect Golf Swing is data on this subject. As I said, they installed a hinge on the shaft right above the hosel and hit balls with it to prove the point.

Spring effect is another subject--it works by allowing more deformation in the face, thus requiring less deformation in the ball. The face metal is more elastic than the ball, so less energy is lost.

Yes, if you can resist deceleration during impact you will produce higher ball speed. The problem is that you have no more leverage to apply force to the clubhead in this position. If impact occured maybe a foot after start-down from the top, this would be possible, but there would be no speed.

In the Detonum thread where Bucket posted all the swing sequences, look at all the pictures showing the shafts bending forward just before impact. The shafts are stressed the wrong way! There is a simple explanation for this and it has nothing to do with technique. But what it shows is that all the inertia and firmness of the wrist, left arm, shoulder, etc. is linked to the clubhead through the shaft and none of it can resist deceleration until the shaft is stressed the other way, by which time the ball is way outta there.

More later.

Zin14