[chbkk]

chbkk

I think that you theoretical example has no relevance to a "real" golf swing.

Remember that the sole of the clubhead must lie flat against the ground at impact - irrespective of whether the clubhead width is 4", 8", 12" or 18". That's an absolute necessity. Therefore, that absolute requirement defines the exact clubshaft angle that must exist at impact - it depends on the club's lie angle.

A golfer must achieve that "correct" clubshaft plane angle at impact. To get to that "correct" clubshaft plane at impact in a very efficient manner, one simply has to perform the same biomechanical movements that Anthony Kim performs - whether the clubhead width is 4" or 8" or 12". Of course, the stresses and efficiency associated with swinging a 12" wide clubhead is going to very different when compared to swinging a 4" wide clubhead.

Jeff.

Jeff,
In our mental experiments, both of them, we design the experiments to adjust the swing axis and the swing plane of the swing machine so that the sole of the clubhead to lie flat against the ground at impact!

With (1) the clubshaft in the swing plane: would be a more upright swing. (Swing axis more horizontal)
With (2) the COM of the club in the swing plane: would be a flatter swing. (Swing axis more vertical)

Both intend to start with the soled clubhead and with the soled clubhead at impact.

BTW, (2) is similar to swinging with a centered-hosel club with the clubshaft on plane.

Wish I could easily upload images.