I agree Bernie! I talked to one shaft manufacturer at the show (Graham) That admitted their shafts had minimal spines! They had a Feel Finder / NeuFinder type device that showed the delta between load on a load cell! I had to tell him that I was impressed with nothing more than his honesty that he wasn't denying that his shafts had spines! Only that his shafts had minimal spines! I can appreciate that FWIW! Ed J.
----- Original Message ----- From: "Bernie Baymiller" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, January 27, 2003 5:46 PM Subject: Re: ShopTalk: 20 min talk > So what, Loyd, > > Harrison has been lying in their advertising for years. What makes you think > they wouldn't do the same at the show? Thay can make that thing show > anything they want to show. Besides, I haven't tried a simulator that > predicted my swing correctly yet. > > Bernie > Writeto: [EMAIL PROTECTED] > > > ----- Original Message ----- > From: "Lloyd Hackman" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Monday, January 27, 2003 5:11 PM > Subject: Re: ShopTalk: 20 min talk > > > > Graham > > > > I just returned from the PGA Show where I saw a demo fitting at the > Harrison > > Shaft booth where they were using the Full Swing Simulator. They were > using > > trial and error, watching trajectory and distance to optimize the shaft. > He > > specifically demonstrated that the shaft that was too soft for the player > > gave low trajectories while the shaft that was too stiff gave higher > > trajectories. He also explained that the lower trajectory was caused by > the > > softer shaft lagging at ball impact and the increased trajectory caused by > > the head leading the shaft at impact. > > > > llhack > > > > From: "Graham Little" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Friday, January 24, 2003 4:34 PM > > Subject: Re: ShopTalk: 20 min talk > > > > > > > Dave > > > > > > A couple of things: > > > > > > 1. You were going off-line with Allan to discuss this issue about > > instances > > > of shafts bending back prior to impact. I'd love to hear the results. > > > > > > Prior to reading about these things I would have assumed that the > Hackman > > > photo represented something that would be quite common. That is a heavy > > and > > > later hitter with a soft shaft would be producing so much bend on the > > shaft > > > that it doesn't have time to recover before impact. It was actually > quite > > a > > > surprise to me to see so much evidence for a bow forward prior to > impact. > > > I've been working with a strong hitter, late release, 10 handicapper and > > he > > > wanted to try out a softer shaft. Result: low slice. Obviously similar > > > things going on as in the Hackman photo. > > > > > > 2. I admit I'm confused by the Jones and Thompson graphs. Both show a > > drop > > > in acceleration in the last 10 degrees. Also, Jones appears to be > > increasing > > > in velocity right up to impact and Thompson's shows a slight decrease in > > > velocity in the last 10 to 12 degrees? Doesn't this mean that the Jones > > > graph should be showing an increase in acceleration? Perhaps I'm > > misreading > > > this and would appreciate advice. The reason I'm surprised is that what > we > > > are saying is that the head is leading the shaft prior to impact. > Doesn't > > > this mean that the head is moving faster than the shaft at the finish? > My > > > layman's approach would have led to a guess that this would mean that > the > > > head is accelerating.? > > > > > > Cheers > > > Graham > > > > > > > > > ----- Original Message ----- > > > From: Dave Tutelman <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Tuesday, January 21, 2003 8:27 AM > > > Subject: Re: ShopTalk: 20 min talk > > > > > > > > > > Graham and Bernie, > > > > I find that fascinating! Which pictures are those? I have Bernie's > > > pictures > > > > of Bobby Jones' swing, and all of them that show the clubhead > > approaching > > > > the ball show it bent slightly forward. > > > > > > > > I have seen lots of pictures showing the shaft bent back once initial > > > > impact has occurred; that isn't surprising at all, because the > momentum > > > > transfer has slowed down the clubhead. But I'd really like to see a > > > picture > > > > of a reasonably good swing with the shaft bent back just before > impact. > > > > > > > > Bernie, could you please mail me the pictures that Graham has. Thanks. > > > > > > > > Cheers! > > > > DaveT > > > > > > > > At 08:02 AM 1/21/03 +0800, Graham Little wrote: > > > > >I've taken up Tom Wishon's suggestion about preparing a 20 minute > talk > > > > >about what happens when the club strikes the ball and I've been doing > a > > > > >bit of homework. Bernie sent me a series of photos that show the full > > > > >swing including the point of contact. Thanks for the photos Bernie. > One > > > of > > > > >the more interesting things about two of the photos is the fact that > > the > > > > >shaft bends back at contact. We are used to seeing photos of the > shaft > > > > >bending forward slightly just before impact. However, these photos > show > > > > >that the shaft is not just straightened at the point of contact it is > > > > >actually bent back. Will this have any affect on the ball flight or > is > > it > > > > >too late to matter? Do we have to rethink issues like the shaft flex > > > > >taking this into account? > > > > > > > > > >Any comments? Does anyone have other photos of this sequence that may > > > shed > > > > >some light on this matter? > > > > > > > > > >Cheers > > > > >Graham > > > > > > > > > > > > > > > > > > > > > > >
