In a message dated 10/12/2004 2:16:48 PM Pacific Daylight Time, [EMAIL PROTECTED] writes:
David
The ball matches the club head of No. 1 the best. If you can get the natural frequency of the ball to be the same as the natural frequency of the face you will get the best smash No.. It is the tram
In a message dated 10/14/2004 5:41:53 AM Pacific Daylight Time, [EMAIL PROTECTED] writes:
At 02:19 AM 10/14/04 -0400, [EMAIL PROTECTED] wrote:
>For the acceleration data I believe Pat may be on to something.
>If you can imagine the acceleration curve as an upside down v and pick a
>clubhead speed
In a message dated 10/14/2004 2:38:33 PM Pacific Daylight Time, [EMAIL PROTECTED] writes:
Dave,
>Impact is very short. It is about a half a millisecond, or 1/2000 sec.
Edgerton's photos show total duration of ball contact with the clubhead,
using a 100 compression Spalding Dot golf ball, was .00
Since this discussion has gotten to a fairly high level, remember that
momentum is a vector quantity that must be conserved before and after
impact. Since the club face is angled (loft) and the ball comes off the
face at some launch angle, and we assume that the original velocity of the
club h
In a message dated 10/14/2004 6:04:18 AM Pacific Daylight Time, [EMAIL PROTECTED] writes:
A customer just brought me his taylor made R5 40 8.5 loft with a
broken shaft TM R5 S flex MAS 2 70 low torque tip soft . he wants it
reshafting but NOT with the
same shaft which he said he ''hated'
Jeremy,
It must be TM week. I just sent this to Keith from an earlier post.
I have a customer that has a shaft in his possession that I pulled from his
R7, it's a M.A.S.2 7-65 S Low Torq Tip Firm. The readings beforeI pulled
this shaft were--45" 254CPM 323.7gr. D4 3.8* .350" tip R7 Quad 10.5*.
All:
An interesting discussion about the physics of collisions. I believe this is not
well understood by most people. Just a bit of my background so you know some of
my credentials. I am presently completely my PhD in atmospheric physics so I
hope I have at least at fundamental grasp of physics :)
RK,
Well there wizz bang, I want you to know that I just returned from your
favorite place, the Golfsmith GCA Conference. I also want you to know that
I won the long drive contest for those folks over the age of 60. What did
you ask? I forgot already.
Al
At 03:11 PM 10/14/2004, you wrote:
Al
Dave,
> Impact is very short. It is about a half a millisecond, or 1/2000 sec.
Edgerton's photos show total duration of ball contact with the clubhead,
using a 100 compression Spalding Dot golf ball, was .0004 seconds.
Compression was .0002 seconds and decompression was .0002 seconds. Is
impact
Bernie: how is your new Kidney doing? Hope you are getting along with it in prime shape.
HStill
-- Original message -- > Pat and all, > > You lost me on the math, but I can read graphs pretty well. Back in the late > 1930s, Spalding had Edgerton of MIT and a couple others
At 04:21 PM 10/14/04 -0400, Jeremy Ingle wrote:
Wow ! my physics is limited to archimedes Whose principle I still use to
check the volume of clubheads. but If i could apply half your
expertrtise to my golf game
shooting my age would not be a problem.
Don't bet on it!
Knowing how is only part
Wow ! my physics is limited to archimedes Whose principle I still use
to check the volume of clubheads. but If i could apply half your
expertrtise to my golf game
shooting my age would not be a problem.
Dave Tutelman wrote:
Tedd, you're right on again, for all your points.
At 11:08 AM 10/
Dave:
We met here. I corresponded with you privately when I
first discovered this spot.
I agree that some commentators and teaching pros are
misinformed or repeating old, disproven theories.
FYI: A year or so ago, this spot was having another math
discussion. My son had made a remark about
Al. A long drive to you is from the local bar nearest your house to your
home when your DRUNK!! Question for you Al, are you still not
living at home or has your wife stopped sending you jokes via
E-Mail?
RK
- Original Message -
From: "Al Taylor" <[EMAIL PROTECTED
Tedd, you're right on again, for all your points.
At 11:08 AM 10/14/04 -0400, Childers, Tedd A wrote:
What you are saying makes sense to me intuitively, but it can only affect
the impact for the very brief time of the collision (measured in thousandths
of a second probably). If the clubhead is sti
Where do the various laws of physics decide what the head speed at
collision is? If the ball stays on the club face for milli or micro
seconds, and the head actually increases speed during impact, then you have
a head speed at impact and a different one at departure. Which one does
physics ch
Pat and all,
You lost me on the math, but I can read graphs pretty well. Back in the late
1930s, Spalding had Edgerton of MIT and a couple others of his staff do a
lot of ultra high speed photography of Bobby Jones' and Jimmy Thompson's
swings (Jimmy was the longest hitting pro at that time) as we
Dave
Yes I think David was talking about the speed curve not the acceleration
curve. I do tend to agree with Davids thought however because the transfere
of energy occurs over time , even thought it is a very short time. The
velocity changes during this time period because of impact. If the club
h
Pat,
What you are saying makes sense to me intuitively, but it can only affect
the impact for the very brief time of the collision (measured in thousandths
of a second probably). If the clubhead is still accelerating at the
beginning of the impact (vs. decelerating and/or constant), then it follo
At 09:45 AM 10/14/04 -0400, Childers, Tedd A wrote:
I'm no physics expert, but I believe that the collision between a golf
ball and a clubhead is represented by the conservation of momentum
equation (M1V1=M2V2, in a perfect collision with no loss of energy), which
is based on mass and velocity,
Just to reinterate - conservation of momentum applies to an isolated system, where no
external force is appled to either object in the collision. If the USGA air cannon
fires a ball at a fixed driver's face, conservation of momentum applies. If you're
increasing the force applied to the clubhe
You're correct, if you assume that the force applied to the ball is not changing.
There are many tour pros whose smash factors don't fit the equations - pundits will
say their clubs fail COR, but the data for many pros is similar to David D.'s. The
equations don't work, and we know that they h
Pat,
I'm no
physics expert, but I believe that the collision between a golf ball and a
clubhead is represented by the conservation of momentum equation (M1V1=M2V2, in
a perfect collision with no loss of energy), which is based on mass and
velocity, not acceleration. Of course the collisio
Jeremy:
I've got a MFS75-350 X1 (orange) from Apache/Mcc that's got his name on it.
The design of the TM head does seem to encourage a high trajectory, I
get a lot of complaints/reshafts because of it.
Price is $62 for the MFS75-350.
John Muir
clubmaker-online.com
shoptalk
A customer just brought
David,
You're
welcome to follow both Dave T and Lloyd, both of whom 'know' so much about the
golf swing The folks on tour have been measuring acceleration for many
years, but according to Dave T (and hid 'bible' on the golf swing that many
modern experts on this game threw in the trash
A customer just brought me his taylor made R5 40 8.5 loft with a
broken shaft TM R5 S flex MAS 2 70 low torque tip soft . he wants it
reshafting but NOT with the
same shaft which he said he ''hated'' when I asked why? he said he
didn't- really know but thought it was the soft. tip. He wa
At 02:19 AM 10/14/04 -0400, [EMAIL PROTECTED] wrote:
For the acceleration data I believe Pat may be on to something.
If you can imagine the acceleration curve as an upside down v and pick a
clubhead speed such as 100 mph and imagine it at the peak of the V, and if
you can further imagine that at
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