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Pivot center

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  #1  
Old 12-16-2008, 03:13 PM
Jeff Jeff is offline
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KOC

This is Jason Zubacks' secondary axis tilt and head position at impact.



Jeff.
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Old 12-16-2008, 03:42 PM
Hennybogan Hennybogan is offline
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The change
Jeff,

That is a great picture for hitting really far. To my eye, his power package looks good TGM-wise, but his club is moving up because of the extreme tilt., which is a good thing if you want to win long drive contests.

You might notice how much the tilt has changed from the top. It is much more dynamic to change the tilt in the downswing than to pre-set it at address.

But.....Jason does not have to hit his next shot off the ground like a golfer would.

As for how high they launch it. You might try to find some launch monitor numbers for the long drive guys. It is a big adjustment to actually see the ball when you are standing next to them, because it launches so high.
  #3  
Old 12-16-2008, 04:06 PM
Jeff Jeff is offline
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HB

You wrote-: 'It is much more dynamic to change the tilt in the downswing than to pre-set it at address."

It is much more dynamic to change from a slight reverse tilt (pivot) at the end-backswing to a large degree of secondary axis tilt at impact. However, I suspect that it far less mechanically efficient than Jamie Sadlowski's swing. He has no reverse tilt (pivot) at the end-backswing position. He has the classical reverse K position seen in Hogan's swing.

Jeff.
  #4  
Old 12-16-2008, 04:17 PM
Hennybogan Hennybogan is offline
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Jeff,

Would you post a frame by frame of Jamie's swing, face on from address to impact?
  #5  
Old 12-16-2008, 05:44 PM
mb6606 mb6606 is offline
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go to the 36 sec mark
  #6  
Old 12-17-2008, 02:13 PM
O.B.Left O.B.Left is offline
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Are launch angles like hem lines going down this season?
Originally Posted by Hennybogan View Post
Jeff,

That is a great picture for hitting really far. To my eye, his power package looks good TGM-wise, but his club is moving up because of the extreme tilt., which is a good thing if you want to win long drive contests.

You might notice how much the tilt has changed from the top. It is much more dynamic to change the tilt in the downswing than to pre-set it at address.

But.....Jason does not have to hit his next shot off the ground like a golfer would.

As for how high they launch it. You might try to find some launch monitor numbers for the long drive guys. It is a big adjustment to actually see the ball when you are standing next to them, because it launches so high.


Henny

As a side note and given your experience on tour:

When I get into a launch monitor for a driver fitting the techs are always trying to get me to launch it super crazy high. I can understand how this would max out carry etc but I hesitate to fully embrace it as a standard operating procedure. What do you see guys on tour doing these days? Are launch angles going up or down of late?

The fitting guys are also advocating the same procedure into the wind ,in the belief that a high, low spin ball will push through the wind better. I dont doubt their research results but am still hitting it low or moderately high into the wind, thinking that I dont want it to blow around up there. Perhaps Im merely dating myself. What do you see on tour into a strong wind?

Tiger seems to tee it low and hit it on the downswing a lot. Sometimes he tees it really low, almost old school if you will.

To get even further afield Im seeing some Titleist guys now going to the slightly smaller driver head.

I remember tennis racquets getting huge and then coming back a little.

Regards

O.B.
  #7  
Old 12-16-2008, 06:34 PM
O.B.Left O.B.Left is offline
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Originally Posted by Jeff View Post
KOC

This is Jason Zubacks' secondary axis tilt and head position at impact.



Jeff.


Jeff

If you were to consider this photo impact for a moment and draw a line from Z's left shoulder down to the clubhead you could argue that this is a new low point line given his shoulder tilt. In that manner he could be said to be still hitting down and out!

This is what I was referring to when I mentioned the artificial up hill shot. You disregard the flat ground and artificially set up as if going uphill to launch the ball high. You need to make some adjustments so as not to bottom out early in the oh so real flat earth however.

There was another Canadian prior to Z who in the age of persimmon would tee a ball on a golf pencil for height, and then tilt way way back. Twenty years ago or so my buds and I would call this a Kelley Murray shot as we took our 10 degree persimmons over the tree tops on dog legs. Down wind it was a go to shot. The advent of metal drivers, that are so "just tee it up and hit and it will be ok" has taken away the need for most specialty shots off the tee. The high hook in a right to left wind that added 30 yards, the teed low heeled cut shot on a tight hole etc etc etc.

Jeff I should point out however that if you buy the "new low point" (NLP) you should in fairness also draw a line down from Z's head parallel to the NLP line. You will find it to be centered in his Imaginary new stance line ("INSL"). A new and centralized pivot center.

Thanks to Daryl and Jeff Hull for their "spirited" discussion on this and Hip Action in the Trophy Room of the Atlanta Country Club. Make that "wines and spirits".

Come back, Daryl, we miss ya.

O.B.

Last edited by O.B.Left : 12-16-2008 at 06:37 PM.
  #8  
Old 12-16-2008, 09:13 PM
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KOC KOC is offline
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Originally Posted by Jeff View Post
KOC

This is Jason Zubacks' secondary axis tilt and head position at impact.



Jeff.
Jeff,

Would you please read those 12 sections of the golfing machine esp. the impact and follow-through alignment and see what is the following pictures and yours refering to...(pay attentiont to the Impact hands in the first picture)


__________________
If you cannot take the shoulder down the clubshaft plane, you must take along some other path and add compensations - now, instead of one motion to remember, you wind up with at least two!

Last edited by KOC : 12-16-2008 at 09:15 PM.
 


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