Noooo. Its not about a left shoulder incline plane alignment, its about a left shoulder hinge pin.
Again - the top of the triangle is the hinge pin (left shoulder), the middle angle is the left wrist, the bottom angle is the clubhead. The line between the clubhead and left shoulder hinge pin is a reference line to complete the plane. (Its a "flying" wedge).
See the video from lynn above, then look at the drawings and imagine the left arm flying wedge in motion throughout the stroke. Including #3 accumulator role.
I wish we could animate this stuff.
K and thanks cause this is a sticking point for me......been one for a while now.
So we agree the left arm flying wedge does not lie on the Inclined Plane at Top for all but the "theoretical left arm plane" and the club always lies full length on the inclined plane at all times. And the left arm flying wedge is defined as the Plane of the left wrist cock. So the left wrist will cock and uncock in the direction of the left shoulder but the club will correspondingly move up and down the inclined plane ( not off plane towards the left shoulder) ? How's this happen? Divergent Vectors?
In the video you pointed out, Lynn turns DTL and appears to cock and uncock on the inclined plane as opposed to the plane of the left wrist cock, the left arm flying wedge.......does he not?
And what about 10-2-D grips where the left hand cocks in the same direction as the right hand bends..........does that mean the Left Forearm Flying Wedge has rotated closer to the Right Forearm Flying Wedge, that they are no longer 90 degrees to one another?
Seriously this has been a foggy notion for me for a while. And it relates directly to Rhythm in some way ......or Ill have to apologize again ......yes cause in the case of the Left Arm Plane there is no #3 Angle by definition which means that all Hinge Actions have the same associated Travel and therefor the same Rhythm. Back on topic.