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 > > > > > > > > > > > > > >
