Greg, Your a little backward in your analysis.... What you would want is the shaft to be loaded in a plane where any effects of the shaft itself (bend, spine, construction) do NOT cause the shaft to deviate from the plane it's loaded in. Alan's demonstration shows that the shaft will unload in the identical direction it's loaded in, irregardless of any effects of the shaft itself. Basically, if you load the shaft into the spine plane, as it slowly reaches maximum load is where it's perceived that the spine could make the shaft twist or move off of the plane it's being loaded in (as when you put it in the spine finder and slowly twirl, feeling the shaft 'jump' into a neutral position). Now assuming the spine can do this, the shaft is now bent outside of the plane that it was loaded in. Alan has shown that it will return 180 from where it now is, which would be outside of the load plane (or swing plane). Again the recoil or unload is NOT effected by the spine until the shaft goes past neutral and re-loads in the opposite direction - long after impact.
So, if the neutral plane is aligned at 3-9 (therefore spine plane is 6-12 - mainly discussing graphite, steel where a spinefinder measures the degree that the shaft is bent nedds to be address separately since the plane concept is really not applicable), you would effectively load the shaft into the spine plane as in the normal golf swing the shaft is loaded with the leading edge parallel to the plane. So, the logic presented (with the big assumption in saying that the spine does change the bending properties of a shaft enough to actually have an effect) indicates that the spine plane should be in the 3-9 alignment. If you think about it with regard to loading instead of unloading, this might make sense..... Pat K > > From: "Bernie Baymiller" <[EMAIL PROTECTED]> > Date: 2003/03/04 Tue PM 05:05:33 EST > To: <[EMAIL PROTECTED]> > Subject: Re: RE: ShopTalk: Harrison Spineless Technology; Another take > > Greg, > > > On placement my intuition tells me that if the clubhead is releasing from > > being loaded coming into impact I would want that clubhead to exhibit the > > same self centering effect that a shaft exhibits when tension is placed on > > it in a spinefinder. I guess that's spine at 9. Or is it?? ;-) > > Nope. That's NBP (or N1) at 9. > > Bernie > Writeto: [EMAIL PROTECTED] > > >
