[BerntR]

Hello OBLeft,

Houston here - actually it's Katy, but it is pretty close though...

I care.
While I believe it stands as written for Impact , I have reservations about the "always". At Top I believe the Left Wrist should lie flat to the Plane Angle , what ever angle that may be. And also the plane of the Left Wrist cock should be On Plane , up the Plane Angle, whatever that may be.

.....

So......Houston we have a problem. Anyone got a solution to this one?

I think the quote makes a sense 100%. But it should probably feel like the wrist cock is on plane.

The left fw will and should have its own plane throughout the stroke. but the shaft should be present in both planes all the way. That means that the wrist cock itself will be close to being on plane at the top and vertical to the plane at impact. The transition will be gradual but more sudden for dual horizontal hinge action than for angled hinge action.

A combination of forearm rotation and hinge action increases the gap between the RFW plane and the inclined plane towards impact. The overall rhythm keeps the sweet spot axis on both the inclined plane and the LFW plane throughout.

We already know that hinge action is an element in rhythm but I am quite convinced that forearm rotation also is an element. If you come down towards the ball with too little or too much rotation left for impact you will need to compensate...

A LFW that gradually rotates towards vertical is an element that can be sensed throghout the downstroke and therefore managed. And it will blend into the total motion without further manipulation as long as the rhythm is intact.

This also means that accumulator #2 isn't strictly released down plane but down the flying wedge plane. But the hands are moving down their path at the same time and with the right rhythm the sweet spot will be kept on plane even though acc #2 is released on a steeper plane angle than the inclined plane.

If the wrist cock really was on plane in the early down stroke - there really wouldn't be any mechanism for initiating the closure of the club face would there? And how and when should the RFW start to rotate towards it's vertical impact alignment if there weren't any divergence between the wrist cock plane and the inclined plane in the first place? How should the club face be closed in a controlled manner if there were no club face rotation initiated early on in the down stroke?

I read a scientific paper a while ago where it was concluded that a swing plane below the left shoulder helps to square the club face. I thought it was highly irrelevant at the time because the study was discussing swing plane with reference to the left shoulder plane. But in this context it actually makes sense.