[Jeff]

In a previous post I think that OB Left stated that he felt the sweetspot through PP#3 during the downswing, and I presume that he tries to trace the base of the sweetspot plane via PP#3 throughout the entire dowswing (and not any clubshaft plane).

OK. Now consider this example.

See -

Anthony Kim is swinging on-plane during the early-mid downswing and that plane is represented by the yellow line drawn by the TV commentator.

Here is AK's clubshaft through impact.



Note that his clubshaft is in a straight line relationship with the yellow line when the clubshaft travels through impact. So, does AK have to trace the sweetspot plane's baseline to achieve that goal, or is he simply swinging on the same clubshaft plane that he was swinging on when his clubshaft was above the third parallel?

Consider this next example.



Imagine that AK was swinging a specially designed club that had a clubhead of 12" width and presume that the club lie angle was the same as his regular driver - represented by the blue lines. Then, he would have to position the ball further away (about 6" from the hosel) to hit the ball in the center of his clubface. The red line represents the sweetspot plane.

Do you imagine that AK could hit the ball well by tracing the baseline of that sweetspot plane? How would he get the bottom of his clubhead to be parallel to the ground if he didn't have the clubshaft tracing the same path (traveling along the same clubshaft plane) as occurs in his regular swing? To achieve that goal, he would have to trace the clubshaft's SPL and not the sweetspot's SPL because one couldn't trace both the clubshaft SPL and the sweetspot SPL at the same time.

If you imagine the hosel leaving the clubshaft plane post-impact to get to the sweetspot plane (so that the hosel can rotate around the sweetspot post-impact), then how would that be possible if he was obliged to keep the clubshaft on the same clubshaft plane throughout the post-impact time period until he reached the fourth parallel?

Jeff.