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<DIV><FONT size=2>Ric,</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Thanks for spending the time to do the =
diagrams. It
really helps the discussion. I'm going to take a wild stab, based =
only on
intuition, so I won't even bother with a flame suit. It's supposed =
to snow
today, anyway -- we could use the heat!</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>It seems like it's a matter of degree. A force =
can
exist, but be so small as to be negligible. The Moon has a =
gravitational
pull to be sure, but the Earth's is so much stronger, it's =
irrelevant.
</FONT><FONT size=2>A soundboard decal undergoes stress when a board =
is crowned,
but it's irrelevant.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>The situation seems more like a stronger force =
overcoming a
weaker one. The weaker one subtracts from the stronger one, and =
then the
situation is in equilibrium. I'm thinking of a small leaf spring, =
like for
pedals, about 6" long, say curved in an arc of one foot =
radius. It
resists being straightened. If you take a stronger spring, of =
thicker
metal, same length, but curved to a 6" radius, and nest the two so the
stronger's on the outside, the thinner spring will resist a bit, but the =
vector
of its force is overwhelmed by the stronger spring.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Same with the soundboard and ribs. If the =
force of the
SB absorbing moisture is so strong as to bend the ribs, then they're =
irrelevant
after that point, it seems. The material used seems to =
matter. If
the ribs were spring steel, and were initially flat, then of course =
they'd
continue to want to straighten out, forever. What does wood
do?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>If the SB were stronger than the ribs to begin with =
(after
coming up to normal humidity), wouldn't it always stay stronger than the =
ribs?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>--Cy Shuster--</FONT></DIV>
<DIV><FONT size=2>Rochester, MN</FONT></DIV>
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