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Pivot center

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  #1  
Old 12-16-2008, 10:29 PM
Jeff Jeff is offline
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Yoda - you wrote-: "You interpret this Shaft Bend as "Kick" that Lays Back the Clubface. The truth is that Shaft Bend itself supplies neither 'Kick' nor 'LayBack'."

I don't understand your statement in the context of this photo.


Jamie's clubshaft looks like it has bent forward so that the peripheral end is closer to the target than the central end. Do you believe that this phenomenon is not really happening" If it is really happening, why would it not cause clubface layback?

Also, take a look at Jamie's forearm muscles. Very wimpy for the world's best long drive swinger I would think. I had a conversation with Jason Zuback and I asked him whether he used his right forearm/arm actively in his swing as a major source of power. He said that he didn't, and that he didn't feel that he was using any right arm power in his swing.

Jeff.
  #2  
Old 12-16-2008, 10:39 PM
mb6606 mb6606 is offline
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Here is some good Zuback slow mo - go to the 5:50 mark and it appears the club is hitting up on the ball while breaking the world ball speed record.

  #3  
Old 12-17-2008, 12:21 AM
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Yoda Yoda is offline
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Hard At Work In the Playpen
Originally Posted by Jeff View Post
Yoda - you wrote-: "You interpret this Shaft Bend as "Kick" that Lays Back the Clubface. The truth is that Shaft Bend itself supplies neither 'Kick' nor 'LayBack'."

I don't understand your statement in the context of this photo.


Jamie's clubshaft looks like it has bent forward so that the peripheral end is closer to the target than the central end. Do you believe that this phenomenon is not really happening" If it is really happening, why would it not cause clubface layback?
Uh . . . Jeff . . .

The noted bend -- produced by the Sweetspot striving to maintain its in-line condition with the #3 Pressure Point -- is exactly what I rerferenced in my Post #90 above. I know you can -- and need! -- to draw that line, so please do, for the benefit of all.



However, in the interest of future discourse, PLEASE try to connect the dots of prior posts.



Thank you.

. . .

Regarding Clubshaft "kick" producing Clubface Lay Back . . .

Please.

The Left Wrist (vertical to one of the three Associated Planes) controls the Clubface . . . not the Clubshaft 'kick'.

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  #4  
Old 12-17-2008, 12:42 AM
Jeff Jeff is offline
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I have drawn a yellow line between the clubface sweetspot and PP#3.



Have I drawn the line correctly?

What are you therefore implying?

Are you implying that his thrust action is slightly upwards at that time point?

Jeff.
  #5  
Old 12-17-2008, 12:47 AM
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As I Said . . .
Originally Posted by Jeff View Post

I have drawn a yellow line between the clubface sweetspot and PP#3.



Have I drawn the line correctly?

What are you therefore implying?

Jeff.
Good job, Jeff. Thank you!

See the "parabolic Clubshaft bend" I mentioned above?

That is not Clubshaft "kick" . . . It is Clubshaft Inertia not being able to keep up with Centrifugal Pull.

Get it?

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Old 12-17-2008, 01:21 AM
Jeff Jeff is offline
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Yoda - I don't get it.

Are you stating that the clubhead has a certain speed at that time point due to the CF-release force that causes the clubhead to be in that position, and that the central clubshaft cannot keep up? If correct, where do you perceive the PP#3's thrust action force being directed at that exact moment in time - is it down-and-out-and-forward; level and forward, up-and-forward-and-inside?

Jeff.
  #7  
Old 12-17-2008, 01:51 AM
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Originally Posted by Jeff View Post

Yoda - I don't get it.

Are you stating that the clubhead has a certain speed at that time point due to the CF-release force that causes the clubhead to be in that position, and that the central clubshaft cannot keep up?
Jeff,

You know what makes my life so difficult with you? Its because of posts like the above. First, you call me out -- "Yoda". Second, you put words in my mouth ("Are you stating . . ."). Always gotta be careful there! Third, you ask a multi-part question. Finally, you imply you want only a simple 'Yes' or 'No', yet your responding bombast always demands far more.

Once I've satisfied myself that you've reasonably summarized any prior comment I may have made -- no easy task! -- I then have to parse your typically voluminous posts and questions. In this last instance, you have dictated your premise, "The Clubhead has a certain speed" -- and, then, as usual, there are at least FOUR questions to give a 'go' or 'no go' (all of which are based on a previous mountainous distillation):

-- At that time point;

-- Due to the Centrifugal Force-Release Force

-- That causes the Clubhead to be in that position

-- And that the Central Shaft position not to keep up.
Any one of which I get "wrong" -- even if only by omission or contrary opinion -- or fail to address adequately, and you and other detractors stand ready to roll out the cannon. I don't like this. I applaud your efforts, but I cannot continue to devote my time -- this past week or so was a gift -- to digesting your voluminous posts, correcting your misguided concepts and answering your indefatiguable challenges. I am the proprietor of this site, but I am not your personal 'pocket pro'. Nor will I leave blatant challenges unanswered in open Forum.

To the point, I'm done here. You are a significant contributor, and I encourage your innovative efforts. However, I have come to believe that you need your own Forum to do it and hereby establish Golf By Jeff. Challenge Homer, me, the world order or the nature of the universe . . . I won't care as long as participants adhere to a reasonable decorum. Given your innate curiosity, scientific background and visual posting capabilities, I expect your Forum to be very popular. I will participate as I see fit, but my lack of comment will not be deemed acceptance of any outrageous and incomplete ideas posted therein. I've previously Private Messaged you on this coming constraint. You will post only in your own Forum or another as approved personally by me. Otherwise, nada.



-----------------------------------------------


Now, to your first question:

Yes.

More precisely, the Sweetspot leads . . . but for now, your term "clubhead" will do.



Originally Posted by Jeff.

If correct, where do you perceive the PP#3's thrust action force being directed at that exact moment in time - is it down-and-out-and-forward; level and forward; up-and-forward-and-inside?
From the Top of the Line Delivery Path (10-23-A), the golfer directs Thrust at and through the Aiming Point (6-E-2). Note the ghosted arrow to the Ball in Photo 10-23-A #1.

But, careful, Jeff . . .

You're risking jacking your own thread.



Thrust Direction is a Delivery Path Concept (#23), not a Pivot Concept (#12).

Here we go everybody . . .

Hold on!

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  #8  
Old 12-17-2008, 10:18 AM
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I think Homer said something about the clubhead lining up with the point of origin of the force . . . the #3 pressure point.
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