Clubshaft orbit through the impact zone

[Jeff]

Ed

I don't know why you state that a hinging action only lasts for the duration of ball-clubface contact. It is my understanding that a hinging action continues to the end of the followthorugh (when both arms are straight) and that there can be no clubface roll-over towards the ground during that time period - because that would represent a swivel action and it is my understanding that a swivel action should only occur during the finish phase of the swing and not during the followthrough phase of the swing.

Jeff.

[EdZ]

Jeff - in short, when the ball is gone, hinge action is over.

[Jeff]

Ed

I don't understand your viewpoint.

The effect of a hinging action on the ball is obviously over when the ball leaves the clubface but the golfer is still performing the motions of a hinging action until the end of the followthrough. Also, the biomechanical motions of a swiveling action should not occur prior to the completion of the followthrough - which means that there should be no supination of the left hand during the followthrough phase.

Jeff.

[Jeff]

Ed

Another point.

You wrote-: "As the toe is passing the heel, the shaft has to move 'out' around the sweetspot, if it didn't, you would be blocking or off plane."

If the shaft is moving out, does it still remain in contact with a low rail about 18" above the ground? Homer descibed that idea in his book (somewhere) and VJ Trolio demonstrates it in Yoda's Alignment Golf DVD.

Jeff.

[O.B.Left]

Ed

If the shaft is moving out, does it still remain in contact with a low rail about 18" above the ground? Homer descibed that idea in his book (somewhere) and VJ Trolio demonstrates it in Yoda's Alignment Golf DVD.

Jeff.

Luke already alluded to this point.

Analogies, however good are always somewhat flawed. So too with plane boards, rails, benches.

ob

[Jeff]

Ob Left

I have produced the following short video of a club traveling on the surface of an inclined plane board.

I am using a short (child's) club and I have placed the club along the surface of the board. The club is running continuously along the surface of the board and it remains in contact with the board before and after the low point of the clubhead swingarc. Note the movement of the hosel - it remains along the surface of the board and there is no rotation of the hosel off-the-board or around the sweetspot.

I believe that this visual demonstration shows exactly what is happening to a golfer's clubshaft, hosel and clubface when it travels through impact when the golfer employs angled hinging.

Do you disagree?

Jeff.

[O.B.Left]

Ob Left

I believe that this visual demonstration shows exactly what is happening to a golfer's clubshaft, hosel and clubface when it travels through impact when the golfer employs angled hinging.

Do you disagree?

Jeff.

Exactly?

Amongst other things this looks more like vertical hinging to me. In this procedure the sweetspot plane and the shaft plane are different for a prolonged distance. A reverse roll feel in the hands. The club face laying back only.

ob

[chbkk]

I believe that this visual demonstration shows exactly what is happening to a golfer's clubshaft, hosel and clubface when it travels through impact when the golfer employs angled hinging.

Do you disagree?

Jeff.

I appreciate your effort in the visual demonstration. But I think it misses a crucial ingredient: under centrifugal acceleration, the clubshaft bends from the drooping of the clubhead. You can now keep the grip-end of the bent clubshaft on your plane board with the clubhead swinging below the plane board. For a well matched club, the sweetspot should now be on plane too. I have no difficulty envision the rotation of the clubhead around the sweetspot under this scenario.

[Jeff]

Ed

You wrote-: "As the toe is passing the heel, the shaft has to move 'out' around the sweetspot, if it didn't, you would be blocking or off plane."

Here are capture images of Anthony Kim's swing.



These images demonstrate the toe passing the heel.

Can you see the shaft moving 'out' around the sweetspot?

Jeff.

[O.B.Left]

Luke already alluded to this point.

Analogies, however good are always somewhat flawed. So too with plane boards, rails, benches.

ob

I should add that when using center shafted, face balanced putters; 18" high rails, string lines etc would accurately represent the plane of motion as the shaft plane and the sweet spot plane are the same throughout. I think.

ob