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	<title>Comments on: How Do I Calculate Golf Club Speed From Ball Velocity And And Coefficient Of Restitution?</title>
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	<link>http://www.golfswingtrainerbeginning.com/Golf-Swing-Trainer/choose-golf-club/how-do-i-calculate-golf-club-speed-from-ball-velocity-and-and-coefficient-of-restitution/</link>
	<description>Golf Tips for Beginner Video and Answer for Golf tip</description>
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		<title>By: Scott L</title>
		<link>http://www.golfswingtrainerbeginning.com/Golf-Swing-Trainer/choose-golf-club/how-do-i-calculate-golf-club-speed-from-ball-velocity-and-and-coefficient-of-restitution/comment-page-1/#comment-14611</link>
		<dc:creator>Scott L</dc:creator>
		<pubDate>Mon, 06 Jul 2009 16:00:34 +0000</pubDate>
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		<description>You can&#039;t.  First of all you need the COR for both the ball AND the club head and the first problem you run into is the the COR for the club head varies depending on the precise point of impact as well as varies by clubhead type and style.  One Thing working in your favor is that the COR numbers for a given clubhead can be found from many manufacturers websites but even then you have a problem since the published number has a 10 % &quot;fudge factor&quot; built in. so the actual COR is usually up to 10% higher than the published COR.   I know from actual testing that at high swing speeds 120 MPH or more the ballspeed is around 1/3 greater than the clubhead speed but the problem with calculating these is the reason why radar is used as well as high speed photography.</description>
		<content:encoded><![CDATA[<p>You can&#8217;t.  First of all you need the COR for both the ball AND the club head and the first problem you run into is the the COR for the club head varies depending on the precise point of impact as well as varies by clubhead type and style.  One Thing working in your favor is that the COR numbers for a given clubhead can be found from many manufacturers websites but even then you have a problem since the published number has a 10 % &#8220;fudge factor&#8221; built in. so the actual COR is usually up to 10% higher than the published COR.   I know from actual testing that at high swing speeds 120 MPH or more the ballspeed is around 1/3 greater than the clubhead speed but the problem with calculating these is the reason why radar is used as well as high speed photography.</p>
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		<title>By: WP Robot demo version</title>
		<link>http://www.golfswingtrainerbeginning.com/Golf-Swing-Trainer/choose-golf-club/how-do-i-calculate-golf-club-speed-from-ball-velocity-and-and-coefficient-of-restitution/comment-page-1/#comment-14610</link>
		<dc:creator>WP Robot demo version</dc:creator>
		<pubDate>Mon, 06 Jul 2009 15:35:57 +0000</pubDate>
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		<description>Take this free lesson, and show you how physics will uncover the secrets behind the &quot;delayed hand release&quot; and how it impacts the swing speed and distance performance.
Discover the  &quot;mechanics and physics&quot; of the golf swing described in &quot;simple and clear&quot; detail that will give you an &quot;undisputable scientific guide&quot; on how to achieve smooth golf swing tempo, improved distance and improved accuracy performance.
interesting ?  for more details you can refer the following to understanding more.....http://golf-physics.pinurl.com
Enjoy... !</description>
		<content:encoded><![CDATA[<p>Take this free lesson, and show you how physics will uncover the secrets behind the &#8220;delayed hand release&#8221; and how it impacts the swing speed and distance performance.<br />
Discover the  &#8220;mechanics and physics&#8221; of the golf swing described in &#8220;simple and clear&#8221; detail that will give you an &#8220;undisputable scientific guide&#8221; on how to achieve smooth golf swing tempo, improved distance and improved accuracy performance.<br />
interesting ?  for more details you can refer the following to understanding more&#8230;..http://golf-physics.pinurl.com<br />
Enjoy&#8230; !</p>
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