Delwin D Fandrich wrote: >The deflection was not at all linear up to the point we stopped adding weight -- >that is, at 1,000 pounds. That took it to not much more than flat. > > >These boards (Baldwin L's) are (were?) partially rib-crowned and partially >compression-crowned. And Baldwin boards are (were?) rather lightly crowned. >I do not know if the same, or similar, results would be obtained with either >a pure compression-crowned soundboard (I suspect so) or a pure rib-crowned >soundboard (perhaps not, depending on the rib contours). Nor do I know what >would have happened if we had continued to add weight beyond this amount -- >we were only able to borrow 20 fifty pound weights. > >Del > > > So... what exactly are you hinting at here... that.. boards using compression as part of the crowning process probably display nonlinear reaction to downbearing and rib crownded boards probably display linear ? RicB
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