Ok here is what I did exactly. Not really concerned with tip weighting because I used actual heads 3 -PW mesured at actual lengths.
Using one shaft per frequency slope ie... Rifle chart 4.0, 4.5, 5.0, 5.5, 6.0. 6.5. First dry fitted a 3 iron to the slope frequency for a rifle 4.0 at 39 inches. Then tipped the shaft 9/16" as per standard rifle tipping for each iron in the set. I first took a frequency reading with the 2.5" clamp and then with the 5" inch clamp. The 2.5" clamp got an almost perfect slope line. As I got to the 5.5, 6.0, 6.5, slopes the slopes with the 2.5" clamp stayed linear. The 5" clamp slopes showed a large curve when getting up into the lower irons and wedges. So if you build to a linear slope with a 5" clamp with a Rifle or BTR or KB Steel you might not be build exactly what tou think you are. Your shorter irons might just be playing a bit softer than you think. That's all I can tell you is in a side by side controlled comparison I got results that showed there is a diference. Sincerely, Robert Devino 14252 Delano St. Van Nuys, Ca. 91401 (818) 770-0475 ________________________________ From: Harry F. Schiestel <[EMAIL PROTECTED]> To: ShopTalk@mail.msen.com Sent: Wednesday, December 10, 2008 5:42:00 PM Subject: ShopTalk: 7-iron at 353 cpm - how? TFlan you are indeed correct, it's important to also state the tip weight used. For irons and woods I use a 205 gram drill chuck. What do you use for wood shafts, do you still use 254 grams or do you drop it down to 205 gram wt.? I wonder what the difference in cpm would be using a GS 5" butt clamp going from 205 gram to 254 gram tip weight? Anyone knows, I would like to know what the drop in cpm's would be with using an extra 49 grams wt. Thanks, Harry Schiestel www.myGolfDNA.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of TFLAN Sent: Wednesday, December 10, 2008 7:33 PM To: ShopTalk@mail.msen.com Subject: Re: ShopTalk: 7-iron at 353 cpm - how? How come you don't mention tip weight? That is certainly a major factor in determining freqs regardless of clamp insertion depth. Freq'ing with grip on only shows fewer cpm's and has nothing to do with the flex of the shaft, It's simply a matter of choice, as long as the choice is consistent, IMO. I prefer no grip testing. And, I use a 254 gram tip weight and a 5" clamp insertion. TFlan -- Shoptalk ** Sponsored by the new Aldila Voodoo. Learn more at http://aldilavoodoo.com/