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How much lead tape?


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#1 Brahmabull102002

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Posted 31 March 2008 - 03:59 PM

How much lead tape does it take to increase the swing weight of a club one point?


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#2 thewitt

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Posted 31 March 2008 - 04:12 PM

Standard 1/2" lead tape will require 4 1/2" for 2g or 1 SW point.

There are more dense lead products around that will take less - as well as a lead-free tape that will take less.

-t

#3 hbear

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Posted 31 March 2008 - 04:36 PM

Also factor in shaft length....the longer the shaft the greater the effect lead tape will have on SW...due to distance from the fulcrum.
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#4 irishfight4it

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Posted 31 March 2008 - 05:29 PM

4.5 inches is the PGA standard to change 1 full swingweight point

#5 TexasAg

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Posted 31 March 2008 - 05:43 PM

View Posthbear, on Mar 31 2008, 05:36 PM, said:

Also factor in shaft length....the longer the shaft the greater the effect lead tape will have on SW...due to distance from the fulcrum.

??? :cheesy:


#6 hbear

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Posted 31 March 2008 - 06:51 PM

If you take a 46" driver and add x amount of lead tape, it will have a greater effect on SW than if you put that same amount of tape on a 32" club. (longer lever for the added weight to work upon)

Since SW is not based as much on total club weight but instead ""The measurement of a golf club's weight about a fulcrum point which is established at a specified distance from the grip end of the club."

I could be completely wrong, but that's what I've seen when I've tinkered with lead tape.
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#7 Pinehurst1999

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Posted 31 March 2008 - 08:50 PM

View Posthbear, on Mar 31 2008, 06:51 PM, said:

If you take a 46" driver and add x amount of lead tape, it will have a greater effect on SW than if you put that same amount of tape on a 32" club. (longer lever for the added weight to work upon)

Since SW is not based as much on total club weight but instead ""The measurement of a golf club's weight about a fulcrum point which is established at a specified distance from the grip end of the club."

I could be completely wrong, but that's what I've seen when I've tinkered with lead tape.
Makes perfect sense to me.

#8 TexasAg

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Posted 31 March 2008 - 09:40 PM

View Posthbear, on Mar 31 2008, 07:51 PM, said:

If you take a 46" driver and add x amount of lead tape, it will have a greater effect on SW than if you put that same amount of tape on a 32" club. (longer lever for the added weight to work upon)

Since SW is not based as much on total club weight but instead ""The measurement of a golf club's weight about a fulcrum point which is established at a specified distance from the grip end of the club."

I could be completely wrong, but that's what I've seen when I've tinkered with lead tape.

You're confusing MOI and swingweight.  Take a 46 inch driver and 35 inch wedge, both at D2.  Then add 4 grams of weight to each head.  They will now both have a swingweight of D4.  

The feel will very likely be different though.  That's why MOI matched sets typically have increasing swingweights as the clubs get shorter.

Edited by TexasAg, 31 March 2008 - 09:41 PM.


#9 mat562

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Posted 31 March 2008 - 09:45 PM

The above post is spot on.

Swingweight is an arbitrary scale that is based on solid numbers. How heavy a club 'feels' to someone swinging it is different - which always struck me as odd given the term 'swingweight' which suggests otherwise.

As alluded to above, a matched set of clubs generally has an ascending swingweight in the shorter clubs to address this issue and give a uniform 'feel'.

#10 thewitt

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Posted 01 April 2008 - 08:26 AM

Though weight added to the head on a 45" driver will change the swingweight more than weight added to the head of a 36" wedge - the short story is you cannot measure the difference without a swingweight scale that weighs to the tenth of a swingweight point...

-t


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#11 TexasAg

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Posted 01 April 2008 - 09:24 AM

View Postthewitt, on Apr 1 2008, 09:26 AM, said:

Though weight added to the head on a 45" driver will change the swingweight more than weight added to the head of a 36" wedge

:cheesy:   No, it will not.  2 grams is one swingweight point.  End of story.

#12 hbear

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Posted 01 April 2008 - 10:22 AM

Thanks for the clarification guys....but still seems odd to me as the physics seem off.

I just know when I've tinkered around I tend to need a bit more lead tape on my lob wedge than I do on my driver to change the reading on my scale (measured pieces from the same roll).

Who knows?
:cheesy:

Edited by hbear, 01 April 2008 - 10:33 AM.

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Posted 01 April 2008 - 10:41 AM

View Posthbear, on Apr 1 2008, 11:22 AM, said:

Thanks for the clarification guys....but still seems odd to me as the physics seem off.

I just know when I've tinkered around I tend to need a bit more lead tape on my lob wedge than I do on my driver to change the reading on my scale (measured pieces from the same roll).

Who knows?
:cheesy:

you are correct. physics can not be changed because it is applied to golf. we are talking about a simple lever. its not that hard too wrap your brain around.

#14 thewitt

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Posted 01 April 2008 - 02:48 PM

View PostTexasAg, on Apr 1 2008, 10:24 AM, said:

View Postthewitt, on Apr 1 2008, 09:26 AM, said:

Though weight added to the head on a 45" driver will change the swingweight more than weight added to the head of a 36" wedge

:cheesy:   No, it will not.  2 grams is one swingweight point.  End of story.

Actually, it is NOT the end of the story.

2g in the head is approximately 1 SW point if the club is 38.75" long.

A complete explanation of this can be found in "The Modern Guide to Golf Club Making" pages 90-93.

If you have a digital swingweight scale capable of measuring swingweight in 1/10 of a SW point, you can easily verify this yourself.

The 2g = 1 SW point that we casually toss around is just an approximation.

-t

#15 boon44

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Posted 01 April 2008 - 03:04 PM

Based on that Tim, does the same application of 2g have more or less affect on SW as the club gets longer than your stated 38.75.....say 2g added on a 44.5" club.....etc...etc.


#16 thewitt

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Posted 01 April 2008 - 03:55 PM

The longer the club, the less weight is needed - assuming the same shaft since balance point is part of the equation.

You can safely assume the 2g = 1 SW point for virtually all applications however, since we are taking about tenths of a SW point difference for most examples.

The standard reference for 2g=1SW point was with steel shafts and a club that was 38 3/4" long.

-t

#17 hbear

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Posted 01 April 2008 - 03:59 PM

View Postthewitt, on Apr 1 2008, 02:55 PM, said:

The longer the club, the less weight is needed - assuming the same shaft since balance point is part of the equation.

You can safely assume the 2g = 1 SW point for virtually all applications however, since we are taking about tenths of a SW point difference for most examples.

The standard reference for 2g=1SW point was with steel shafts and a club that was 38 3/4" long.

-t

Makes perfect sense to me, AND follows the rules of physics that I understand, AND goes hand in hand with my personal experiences.

Thanks!
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#18 TexasAg

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Posted 01 April 2008 - 04:18 PM

View Postthewitt, on Apr 1 2008, 03:48 PM, said:

Actually, it is NOT the end of the story.

2g in the head is approximately 1 SW point if the club is 38.75" long.

A complete explanation of this can be found in "The Modern Guide to Golf Club Making" pages 90-93.

If you have a digital swingweight scale capable of measuring swingweight in 1/10 of a SW point, you can easily verify this yourself.

The 2g = 1 SW point that we casually toss around is just an approximation.

-t

I'm well aware of this.  But for all practical purposes, 2g is 1SW point.  Most people can't tell a difference of less than 2 SW points (if that), so measuring down to 1/10th of a swingweight point is a waste of time.  The original question was how much lead tape do I need to add to affect swingweight.  For all practical purposes, that amount is 2g regardless of the length.




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