[Mike O]

Thats what I don't understand. What is confusing?

The plane of the #3 accumulator is formed on two of it's four sides by
1) the left arm- defined by the straight line between the hand and the shoulder

and assuming a flat left wrist

2)the clubshaft- defined loosely by that straight line from the hands to the clubhead

We're using a zero shift plane in this example and looking at say the movement of the #3 accumulator plane from impact fix to the top in relation to the swing plane.

Since the left shoulder is not on the swing-plane (always "in front" of the swing plane- from impact fix to the top- assuming a #3 accumulator) and the hands are always on plane- then the #3 accumulator plane is closed to the swing plane and not parallel to the swing plane at any point in the backswing.

So your comment "parallel to" throws me. What do you mean by "parallel to" and where and how does that happen?


As a side note- after a little review - I believe that would make the #3 accumulator steeper than the swing plane- I believe I said in an earlier post that it was flatter- easier to see that it is closed to the swing plane but a little tougher to see that it is steeper- I used two small envelopes with one resting on the table at an angle representing the swing plane and the other envelope representing the #3 accumulator plane with the narrow side- resting on the "swing plane" -that's the clubshaft side of the number 3 accumulator plane and the other narrow side of the envelope elevated off of the swing plane with the lower corner representing the left shoulder at some point in the backswing.