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Originally Posted by Amen Corner
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Comdpa,
Let there be no mistake, I do understand the concept of Pivot Center.
The reason of my thread is that there has to be a reason why it is put in the 7th edition, and I have talked to other AIīs about the subject, and I have received different interpretations on this sentence.
You can read it as the hinge pin should be vertical during the hole swing or that the pin can tilt to one side or the other as long as the end in the ground do not move from itīs position, which is precisely between the feet. The mental picture I have in front of me is like a metronome.
How do you interpret it?
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See 7-12 . . . I think that should clear up any interpretation issues. The title of the section is Swing Center TRIPOD. The head does't move, but what is UNDERNEATH it may. And in 1-L #1 it says STATIONARY Post (player's head). The post is IMAGINARY . . . It ain't the spine. It is a line drawn up between the feets and up through the mellon. Also see Axis Tilt in the Glossary . . .
Mechanical - To change directions, the helicopter pilot alters the plane of the rotating blades by tilting their axis in the new direction.
Golf - To change the plane of the Shoulder Turn without moving the Head, the golfer must tilt the Shoulder Axis by moving the Hips.