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Subject: Re: ShopTalk: Swingspeed vs. trampoline effect
How far does your ball loss data go back? There is a big difference in
yesterdays wound ball and today's two piece ball in compression losses.
llhack
- Original Message -
From: "Tom Wishon" <[EMAIL PROTECTED]>
, 2002 12:21 PM
Subject: RE: ShopTalk: Swingspeed vs. trampoline effect
> Guys:
> Been reading your comments on spring face with interest. Lots and lots
> of things to comment on but don't want to make this too long, so I will
> try to hit the high points about which I think mine an
Behalf Of Max Dupilka
Sent: Wednesday, July 03, 2002 9:33 PM
To: [EMAIL PROTECTED]
Subject: Re: ShopTalk: Swingspeed vs. trampoline effect
Dave:
Comment below:
>
> > And on the matter of the USGA testing of the thin face drivers I
> > designed that were for lower swing speeds. The US
Dave:
Comment below:
>
> > And on the matter of the USGA testing of the thin face drivers I
> > designed that were for lower swing speeds. The USGA will conduct their
> > COR test at ball firing speed less than their standard of 109mph if you
> > tell them that the head is designed so it would
Tom,
Thanks for the response. Specific comments below...
- Original Message -
From: Tom Wishon <[EMAIL PROTECTED]>
Sent: Wednesday, July 03, 2002 10:01 AM
> Dave, Max:
> So you are asking, if a head has the same or nearly the same COR
> regardless of head speed, then how would a thinner
Dave:
Your explanation sounds reasonable to me. I will have to have a look at that
article. I haven't read the Part III book yet.
My whole purpose of this question is this. If a company can make an at the legal
limit COR club that can withstand a 130 mph swing speed, and the COR varies only
a sm
Followup to my previous note...
- Original Message -
From: Dave Tutelman <[EMAIL PROTECTED]>
Sent: Tuesday, July 02, 2002 7:44 PM
> Going to an optimum spring-face (with the assumption of light damping)
from
> a rigid spring face gives:
> * For the 112mph swinger, a COR improvement of
- Original Message -
From: Max Dupilka <[EMAIL PROTECTED]>
Sent: Tuesday, July 02, 2002 6:12 PM
> So it looks like we have a bit of differing opinions here. Dave, you would
> suggest that the COR, for a given clubhead/ball combo, is close to a
> constant for all clubhead speeds. Tom see
Dave and Tom:
So it looks like we have a bit of differing opinions here. Dave, you would
suggest that the COR, for a given clubhead/ball combo, is close to a
constant for all clubhead speeds. Tom seems to indicate that the COR is non
linear enough to make a significant difference.
It seems a lo
EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
On Behalf Of Gary Tarbet
Sent: Tuesday, July 02, 2002 1:09 PM
To: [EMAIL PROTECTED]
Subject: RE: ShopTalk: Swingspeed vs. trampoline effect
Tom,
Appreciate the input. The one question I have from your information is
what affect does different types of bal
use different ball types?
Gary T.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
On Behalf Of Tom Wishon
Sent: Tuesday, July 02, 2002 12:21 PM
To: [EMAIL PROTECTED]
Subject: RE: ShopTalk: Swingspeed vs. trampoline effect
Guys:
Been reading your comments on spring
Guys:
Been reading your comments on spring face with interest. Lots and lots
of things to comment on but don't want to make this too long, so I will
try to hit the high points about which I think mine and my engineering
consultant's knowledge is pretty solid.
1. Perhaps the worst piece of mis
Dave T you rat ;-)
Here I am with several demo illegal driver heads installed on several
different shafts. My old fart customers are conviced they hit it farther and
straighter with them. What to do, what to do?
Seriously though, I played an illegal AerMet with 4 different shafts
installed. On a
trength you need. Maybe not from Golfsmith, but
definitely from Clubmaker Online.
Cheers!
DaveT
- Original Message -
From: Max Dupilka <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, July 01, 2002 10:34 PM
Subject: Re: ShopTalk: Swingspeed vs. trampoline effect
&
Dave:
I have tried to get an answer about this question of whether the trampoline
effect (COR) varies with clubhead speed, but I haven't had much success. I tend
to believe what you are saying, that the COR for a given clubhead is pretty well
constant for all clubhead speeds. If that is the case
- Original Message -
From: Tom Janson <[EMAIL PROTECTED]>
Sent: Monday, July 01, 2002 7:05 PM
> I heard some guys talking today about the interaction of
> swing speed and the trampoline effect. One guy swore
> that with a swing speed below 100 mph there is no
> trampoline effect. Others
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