Some people claim that spine is spine, regardless of the arrow material. Others say that different materials (wood, fiberglass, aluminum, carbon) have different frequencies of vibration, so spine (measured as deflection on a standard spine tester) is different for different materials, all else being equal, to get the same results.
Has anyone actually tested either theory? I haven't, but it would surely be nice to be able to say, "OK, if you know that 65-70# works for wood, then XXX will work for aluminum, and YYY for carbon, because they all spine the same." Or not, as the case may be.
Has anyone put together a chart that shows relative equivalence of the different materials under controlled conditions, i.e. by a study done by scientific methodology? I know there are a lot of opinions out there, but has anyone actually done the test work in such a way that the results can be shared, and pass "peer review" requirements?
Just curious,
Don