"This modern research includes the D-Plane, which proves that the "Plane Line" does not provide for direct correlation to ball flight; findings by Jorgensen, Nesbit and Zick that show that to get beyond an 85% mathematical limit in power generation, the golfer must apply pulling and pushing during the same stroke different times; "hinge action" during impact will not change ball-flight perceptibly; the mathematical reality that proves that you cannot resist deceleration through impact, no matter how long a flat left wrist is held, and despite any impact body positioning; and the bio-mechanical reality that shows the practical implausibility of the two recommended patterns in the 6th and 7th editions."
Great article by BM on TGM today. I think I understand the D-plane stuff. The recent posts have covered it well. I think I understand the hinge action and deceleration resistance issues; because the club head contact with the ball is so incredibly brief there is not time for hinging or resistance to accomplish anything. But I don't understand the science behind the other two issues. Can someone could help me locate previous threads that would cover these topics:
1) the 85% limit in power generation. I think that i read somewhere recently in a post by BM that one begins to push once the shaft is vertical. I don't understand this because the ball has left the clubface by the time the shaft is vertical.
2) the bio-mechanical reality that shows the two patterns in the book implausible.
Great article by BM on TGM today. I think I understand the D-plane stuff. The recent posts have covered it well. I think I understand the hinge action and deceleration resistance issues; because the club head contact with the ball is so incredibly brief there is not time for hinging or resistance to accomplish anything. But I don't understand the science behind the other two issues. Can someone could help me locate previous threads that would cover these topics:
1) the 85% limit in power generation. I think that i read somewhere recently in a post by BM that one begins to push once the shaft is vertical. I don't understand this because the ball has left the clubface by the time the shaft is vertical.
2) the bio-mechanical reality that shows the two patterns in the book implausible.