[12 piece bucket]

Please explain the 'D-Plane' (for the rest of us) and contrast it with TGM's Turned Shoulder Plane Angle (10-6-B) and On Plane Right Shoulder Turn (10-13-D). Your explanation, graphics and links will be appreciated. Thanks!

Boss . . . .

Here's a link to Jorgenson's book that goes into the D-plane . . .


http://books.google.com/books?id=fpLWA4TygqwC&pg=PA87&lpg=PA87&dq=d-plane+jorgensen+golf&source=bl&ots=kxH9HM2z7m&sig= Q1ZQxVVVIzJ-R9CIKs2St4jB8nM&hl=en&ei=XWHlSaK3IuOLtgeI5YGvDA&sa =X&oi=book_result&ct=result&resnum=2

Basically this guy is saying that generally the ball's starting direction is 80% face and 20% path and represents that with a "ray" or "plane" coming off the face. The ball curves in relation to the path vector. It took a computer nerd to figure out that the face controls the starting direction which of course Mr. Kelley figured out in the summer of 69. But I think the one thing that is somewhat different that the computer geeks have posited is that the ball is on the club for such a short amount of time that impact and separation are in essence the same . . . there by making hinge action "obsolete". Therein lies the "controversy" of the people who want to rip Mr. Kelley's science.

Here's some more potentially interesting stuff from "trackman" . .

http://trackmangolf.com/newsletter/m...ngDistance.pdf