The apparent spine is really just residual bend. When feel-finding was repeated as naive deflection measurement, it indicated a load difference of 150 grams. (That's about 1cpm, as verified on the frequency meter during the FLO test.)įeel-finding, on the other hand, pointed to a really significant spine. The shaft showed FLO in all directions, and differential deflection showed the same stiffness to within 30g. The caveat though is to find the right frequency and the right slope whether it's flat line or linear But as I said weight sorting will bring about very good results. Well at least not the quality ones and your theory holds true in some instances. I knew several builders who like DT ,liked to use alignment to offset toe droop.DT does not believe in aligning steel shafts. agree, as the shafts are trimmed frequency differences around the shaft become less with the shorter beam length. I would always weight and frequency sort my uncut shafts prior to use. To me 5 cpm is about 1/2 a flex, I personally couldnt ignore that, 3 cpm, Maybe i could.įor those wanting a bit more detail on the physics of the subject a good read Perhaps overkill but I liked to be more accurate in my builds. My personal belief is that the threshold of negligibility is probably 3-5cpm, and I treat a spine of less than 3cpm as something I can ignore. "I go out of my way to order shaft models that I know to have negligible spine - then I just don't worry about aligning. I knew several builders who like DT ,liked to use alignment to offset toe droop. agree, as the shafts are trimmed frequency differences around the shaft become less with the shorter beam length.Įasy to tell a bent shaft by rolling it on a flat surface, If possible these went back or in the trash. The two frequencies in a steel shaft or a filament wound graphite shaft are generally very close such that very little wobble will occurI was speaking raw uncut blanks. That is what the bearing type spine finder finds. We all know that shafts are not perfectly round nor perfectly straight. The two frequencies in a steel shaft or a filament wound graphite shaft are generally very close such that very little wobble will occur Just saying it won't make a difference in terms of flex. But nothing is keeping anyone from aligning these ''bends' if they so desire. Therefore no need to be floed nor to be aligned. The reason they do not wobble is because the frequency is pretty constant across the circumference of the shaft. If they are weight sorted they will be well within tolerances once tipped.
SPINE ALIGN STEEL SHAFT HOW TO
The discussion of how to orient the shaft once you determine spines and neutral planes has occupied much bandwidth over the years. Have Never found a steel shaft that is round in over 10 years.
SPINE ALIGN STEEL SHAFT FULL
Ive measured frequency variations of a full flex in steel and not uncommon to have 4-6 (~ 1/3 to 1/2 flex cpm depending on orientation.
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