RE: ShopTalk: History of Frequency

[Childers, Tedd A]

Thanks Lloyd.  I think your input provided a better explanation of what I was trying to say, and also added a couple of things I forgot to mention.   Tedd -----Original Message----- From: Lloyd Hackman [mailto:[EMAIL PROTECTED]] Sent: Friday, September 06, 2002 4:52 PM To: [EMAIL PROTECTED] Subject: Re: ShopTalk: History of Frequency Comments Below ***   llhack ----- Original Message ----- From: Childers, Tedd A To: '[EMAIL PROTECTED]' Sent: Friday, September 06, 2002 10:00 AM Subject: RE: ShopTalk: History of Frequency Peter,   You are incorrect in your understanding of frequency as it is related to golf club making.  The frequency one measures for a golf club using a frequency analyzer is NOT the resonance frequency of the shaft, but is rather a measure of the time it takes the shaft to complete one complete cycle (i.e up and down) in the meter (i.e. the preiod of the shaft as you state below).   *** Better known as the natural frequency of the club in the first vibrational mode.     This is a direct measure of the bending properties of the shaft, and therefore a measure of relative shaft stiffness.  Is this clear?    *** But it also includs the affect of the head weight, Shaft length and all other shaft properties. Frequency is the most accurate measure of shaft flexural performance.   If not, maybe one of the engineers on the forum can explain it in the proper terminology.   Tedd -----Original Message----- From: Peter T. Sabin, neoGolfMatching [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 05, 2002 8:04 PM To: [EMAIL PROTECTED] Subject: ShopTalk: History of Frequency Can anyone recall when the frequency of a shaft/club became a recognized standard for matching or building clubs? I am puzzled as to why this measurement became a clubmaking and fitting tool. My understanding is that frequency is, in essence, the resonant frequency of a shaft/club. If so, it escapes me as to why this has an effect on the golf swing. I can understand how the period of a finished club (i.e. the time it takes to complete a cycle when allowed to swing about the axis point) affects the golf swing. But the resonant frequency? I don't understand. A little history would be great. Thanks. -- Peter T. Sabin (aka phineasToad) neoGolfMatching eMail: [EMAIL PROTECTED] LEGAL NOTICE Unless expressly stated otherwise, this message is confidential and may be privileged. It is intended for the addressee(s) only. Access to this E-mail by anyone else is unauthorized. If you are not an addressee, any disclosure or copying of the contents of this E-mail or any action taken (or not taken) in reliance on it is unauthorized and may be unlawful. If you are not an addressee, please inform the sender immediately.