[Daryl]

Steph, Thank you for your insight. As a club maker yourself, you've dealt with these issues before and will probably again.

Hmm? Is it possible that someone can do research, get published, and still be wrong? If one then many. Certainly the equipment makers (not the ball makers) with all of their technology have not advanced a players improvement in recent years quite as much as their investment and profits. I don't know that they actually have any interest in improving swing mechanics. I'm sure that they recognize the shortcoming of most teaching professionals and the general population of golfers to make permanent swing mechanic improvements and thus have adopted game improvement equipment to compensate. Certainly they didn't invest million and millions of dollars so that just a few Tour Pro's can make a few more bucks. And certainly, with millions in profits at stake, they aren't going to wait for teaching professionals and the general public to get the job done any time soon. If they can make a shaft, so that anyone can pick up a club and play respectable golf, they certainly would. And maybe that's not as far away as one might think. I think all that is holding them back is the PGA's Club Spec guidelines and the R&A. Until the general golfing public improves their mechanics, and teachers learn the real cause and effects of golf mechanics then game improvement technology will be their crutch, and maybe their savior. Everyone wants to build the ultimate golf club. Besides, historically, equipment makers have sucessfully redefined the game. Four wedges, Metal Drivers, Cavity back irons, graphite shafts. And Golf Course designers seem to be keeping up too. In fact, the only segment that's falling behind is the GOLFER.

Homer Kelley was, and still is, ahead of his time. Something that I have observed in browsing through golf books this evening is that many players exhibit the prestressed clubshaft at impact with shorter clubs and less with longer clubs. This may be due to longer shafts or possibly the difficulty of getting the Pivot to Transport the Power Package fully into the Release area in order to maintain the Prestressed Shaft.

Even Annikan Skywalkers recent thread with pictures of his swinging and hitting Stroke Patterns demonstrate a Prestressed Clubshaft before impact with his Swinging Pattern even more than his Hitting Pattern, though Yoda's comments may lead you to believe the opposite is more likely to be true. The Young man that Annikan illustrates further into the thread exhibits the same tendency. Could these videos be an optical illusion? The mistake would be to abstract these two swings and say that all of his swings work this way. I think that they always want a prestressed shaft but that kind of precision isn't always going to happen in every swing.

Also the mistake would be to take any stop action photo of your sources and conclude that all swings for all golfers demonstrate a similar trait. The majority of the pros can be wrong at the same time. But with time they improve. The Pro's have made some impressive improvements during the past 50 years, and I'm sure that improvements will continue far long after the research you quote fades into obscurity.

THE SECRET

6-C-2-B. ANGULAR ACCELERATION The Clubhead “overtaking” speed is governed by the Law of Conservation of Angular Momentum whereby the increased Mass resulting from any extension of the Swing Radius decelerates the Hands and unless they are supported by Power Package Thrust (6-B-1) or Throw Out Action (2-K), can result in great loss of Clubhead speed. Rely on Clubhead Lag to meter out the necessary support for the Primary Lever Assembly. Strictly speaking, any increase in the product of Mass times Velocity is Acceleration whether or not the speed has changed. But the formula for Kinetic Energy gives Velocity the Greater value. And, actually, the acceptable tolerance in the Ball-to-Clubhead weight ratio is quite small.

6-C-2-C. IMPACT CUSHION The prestressed Clubshaft will resist the added weight of the ball during Impact, instead of cushioning the Impact with an unstressed Clubshaft. See 2-M-1

Clubhead Lag Pressure normally remains constant regardless of the Velocity it has produced. And both #1 and #3 Pressure Points are the product of Accumulator #1.

6-C-2-D. LAG LOSS The very small degree of Clubhead Lag permitted by Clubshaft Flex, makes this procedure especially susceptible to Clubhead Throwaway. And the stiffer the Clubshaft the less margin.

Over-Acceleration is the menace that stalks all Lag and Drag. Here it allows the Hands to reach maximum speed before reaching impact and so dissipates the Lag. So, the length of the Stroke and the amount of Thrust should be adjusted and balanced to produce a “High Thrust-Low Speed” Impact-“heavy” rather than “quick.” Daintiness is dangerous.