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Mathew Quote:
"In 2-C-1 what does Homer mean when he says the angled clubshaft and the closing clubface are rotating around the same center?"
See 2-C-1 #3 - notice the impact condition of the leading edge and the shaft - they line up and also notice the point of separation condition - both the leading edge and the clubshaft line up i.e. point at the end of the grip or the same center of the circle of rotation.
Now, look at 2-C-2 #3- Vertical Hinging - notice how the leading edge at impact does not line up with the shaft but at separation it does. Angled Hinging produces a somewhat similar situation, and per 2-J-1 "Angled Hinging gives the Clubface a Slice producing uncentered motion", anotherwords the clubface motion has a different center than the clubshaft center, or put another way - the clubface motion is not centered to the same center as the clubshaft motion.
Of course, so does vertical hinging but since these are typically short shots where the Venturi effect has little opportunity to effect curvature of the ball flight- the uncentered slice charactistic is an irrelevant point in these situations.
Maybe others can add, correct or clarify further, that's about the best that I can do in regards to this question.
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