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Date Posted: 14:52:53 03/12/07 Mon
Author: David Lake
Subject: Re: Two different swings
In reply to: Bart O'Shea 's message, "Two different swings" on 11:32:00 03/11/07 Sun

Bart,

You hit upon the key when you stated:

"From a playing standpoint I can't see it making a large difference with the lie angle as the hands have to be within a certain area, in relation to the body, to strike the ball with either swing".

Simply put, it is not important how you get to the ideal impact position as long as you end up in the ideal impact position. To give a perfect example, Jim Furyk has the most unorthodox swing in golf yet at impact he is in the exact same position as Tiger Woods, Fred Couples, etc., and is the reason that he plays well on tour.

Obviously the rest of us who do not have the "off-the-chart" neuro-muscular response time and hand/eye coordination of a professional golfer (that is why they are professional golfers), need to develop the ideal swing posture and swing plane in order to get to the ideal impact position. This is the design/fitting philosophy of our 1 Irons, to force the golfer into these ideal positions.

As far as dynamically testing a golf club using a lie angle board, you must realize that it produces false information. The idea behind the use of a lie angle board is to hit golf balls off of a colored board which will leave a mark on the sole of the clubhead. Depending on the positioning of this mark in relation to the toe and heel of the clubhead you can supposedly determine the correctness of the clubhead lie angle. The problem is that due to centrifugal force created in a golf swing the golf shaft bends downward through the impact zone and through impact with the ball, thus resulting in an effective/dynamic lie angle at impact that is different than the static lie angle. This dynamic lie angle is the one that determines how well the ball is struck and is the intended effective lie angle of the golf club designer. If the ball is being hit off of a lie angle board (hard surface), the shaft will straighten out and even bend upwards upon contact with the board thus resulting in a widely miss-positioned impact mark on the sole of the clubhead. Obviously, what we want to know is where the clubhead sole mark would appear at the point of impact with the ball, not where it actually appears after the ball is gone and the shaft has been bent upwards by the force of contact with the lie angle board. Therefore, any information produced by a dynamic lie angle board test must be considered flawed at best.

David

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