Hi folks I've gotten quite a ways done with my spreadsheet for figuring in the effect of changes in vertical deflections of strings either by the soundboard rise or by the bridge pushing the strings up the pins and find some obvious results that dont match what we observe. If the climate causes a growth of the bridge surface resulting in a 1 mm push upwards on the pins of the strings... then the result will be a uniform and graduated increase in pitch proportional to the speaking length. Nearly no effect on long strings... and a whale of a lot of affect on short strings. No breaks in the graduation would be evident as the resulting change in the length of the string segment on the bridge surface itself would dominate the picture. So this doesnt add up by itself. more later RicB --
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