Re: ShopTalk: shaft flex v.s. frequency

[Bernie Baymiller]

Charlie,   Did you try these shafts aligned with NBP to target? That's the way the shaft wants to bend when loaded. Certainly long, light graphite Type 2 shafts would have a decided ovalling if not aligned the way the shaft wants to bend...which according to GS testing increased the impact area on the face. And, as John Kaufman said in his web site notes on spining, why not minimize the ovalling? Move the impact off center toward the toe and you'll get a draw....and the opposite with a hit toward the heel. I don't know what amount of ovalling would be necessary to create those problems, but it doesn't take much for me.   My question was one Dan explained in better detail in his response to Dave...if a shaft has an unintended bend in it, and the finder is influenced by the bend, will this shaft under load also be influenced by the bend? I would think it would, but have no means to prove or disprove it.   Bernie Writeto: [EMAIL PROTECTED]     ----- Original Message ----- From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, December 23, 2002 5:48 PM Subject: Re: ShopTalk: shaft flex v.s. frequency In a message dated 12/23/02 11:54:20 AM Eastern Standard Time, [EMAIL PROTECTED] writes: Will these "geometric" imperfections (I assume you mean something like a bent shaft?) affect the shaft's performance, and should they be taken into account in shaft alignment?     Bernie        I did some testing with a tour pro as my subject and it was a blind test and I had him going crazy trying to get the ball to fly straight and the only difference was a rotation of shaft 90 degrees each time and all i was doing was moving the curvature of the shaft to different positions and they were not the same as S1 and NPB marks so I definitely feel that there is something more than just spine and npb. In fact I just made two Infiniti AW 1 irons with graphite shafts and need to turn them 180 degrees as they have the tendency to hang right.   CharlieB