Hi John and Jents No I didn't but I did. Thanks for the correction > should be 90 deg. My first mistake of the year. Come to think of it: "I thought I made a mistake once, then realized I was mistaken" Thanks for correcting my "oversight" (which wasn't a "mistake"). Thanks HarryS www.Golf54.com
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of John Kaufman Sent: Sunday, February 09, 2003 9:13 AM To: [EMAIL PROTECTED] Subject: Re: ShopTalk: Re:Spine Finder Plans Hi Harry, Are you sure that's what you intended to say...."Type II .... S and N 180 degrees apart" ? Can't happen. Cheers, John K ----- Original Message ----- From: Harry F. Schiestel <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, February 08, 2003 10:42 PM Subject: RE: ShopTalk: Re:Spine Finder Plans > Hi Tom > Many graphite shafts are Type II in nature, having a S and N plane 180 > degrees apart. > With a Type II shaft there are 2 S positions and 2 N positions. > The 2 N positions are called N1 and N2. N1 (lowest frequency) is then > referred to as NBP. > A lot of sheet wrap is Type II shafts and almost all steel shafts are Type > I. > Supershafts have a large frequency differential (delta frequency) between > the S and N plane. > Thanks HarryS > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Corey Bailey > Sent: Saturday, February 08, 2003 9:40 PM > To: [EMAIL PROTECTED] > Subject: Re: ShopTalk: Re:Spine Finder Plans > > > Tom, > I'm not sure what plans you downloaded, but I'm assuming that you will be > able to suspend the shaft from the butt end in a set of bearings > approximately 5" apart. You will then use a tip weight (generally hung from > a third bearing) to bend the shaft somewhat into an arch. Be careful with > tip weights. However, It takes at least a pound or two to satisfactorily > place enough tension on the shaft. I say be careful because in my early > days of experimenting, I used the seven pound weight from my flex board and > finally broke a shaft while rotating it in the bearing device. I have used > a 3lb deep-sea fishing weight ever since with great success. > > With the shaft in this bent condition, rotate it slowly a complete turn or > two. You will find at least one, if not two, areas of the shaft that offer > resistance to turning. you will also notice that the shaft under load tends > to settle in one position. This is generally referred to as the NBP, or > "Neutral Bend Point", or "Natural Bend Point", or... > The opposite side of this position (generally, 180 degrees from NBP) is > referred to as the spine. When you rotate the shaft to the "spine" > position, it tends not to stay there and wants to settle back to its > natural position. > > What I have just described is what we "spine finders" refer to as a "type > one" shaft. > > I now (I say "now" because I built my first bearing finder in the > mid-ninetys) use the simplest of bearing finders that I bought from a > Clubmaker named Colin Dick and rarely use tip weights anymore unless I'm > doing specific research. It becomes easy and quick with practice to > determine the spine properties of any given shaft. On average, it takes me > less that a minute per shaft. > > This is only the tip of the iceberg. > > For some further information try: > > http://members.shaw.ca/cgdick/ > > Happy trails, > > CB > > > At 09:45 PM 2/7/2003 -0600, you wrote: > >No offense intended but I guess I asked a stupid question and got a stupid > >answer in return. I deserved that, didn't I? After downloading the plans > the > >next thing to download was the article named, Spine Finding. I read it two > or > >three times, maybe for or five, and still have not gotten an answer to my > >question. Actually I am beginning to believe that I did get the answer but > it > >was not what the author imagined. How many players go into a pro shop and > buy > >a set of clubs, spend the next so many years playing, usually scoring > between > >120 and 80 strokes per game. Finding the spine could possibly the greatest > >sales gimmick in the market place. I doubt there are 1 in 1000 golfers > that > >even know the stiffness of their driver shaft must less whether of not it > had > >or didn't have a spine. > > > >In other words it is not that important to the average player caught up in > the > >process of trying to break 100. > > > >I'll build the thing anyway. Just think of the looks and comments I will > get > >when I tell a customer those tools date back to the early days of golf. > > > >Have a great evening everyone! > > > >Tom M > > >
