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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=Richard.Brekne@grieg.uib.no
href="mailto:Richard.Brekne@grieg.uib.no">Richard Brekne</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">Pianotech</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> October 02, 2003 2:28 =
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Fw: RC vs CC =
again</DIV>
<DIV><BR></DIV>
<P>Delwin D Fandrich wrote:
<BLOCKQUOTE TYPE="CITE">
<DIV class=MsoBodyText style="MARGIN: 0in 0in 0pt"><FONT
face="Comic Sans MS"><FONT color=#000080>I do not know of any =
way to predict
the panel stiffness of a compression-crowned soundboard system. Even =
if a
formula were developed I suspect the many variables would degrade =
accuracy
to the point of uselessness.</FONT></FONT></DIV></BLOCKQUOTE>
<DIV class=MsoBodyText style="MARGIN: 0in 0in 0pt">Well... =
obviously you must
have some way of finding the overall stiffness of the CC =
board... or you
couldnt know an RC board could be made stiffer at all.. let alone for =
any
particular comparisons sake. </DIV>
<DIV class=MsoBodyText style="MARGIN: 0in 0in =
0pt"> </DIV></BLOCKQUOTE>
<DIV class=MsoBodyText dir=ltr style="MARGIN: 0in 0in 0pt"><FONT
face="Comic Sans MS" color=#000080>Ah, that.... While I can't =
predict the
stiffness of a compression-crowned soundboard through the design process =
I can
eassily find out how stiff an existing panel is. Simply apply a known =
force and
measure deflection.</FONT></DIV>
<DIV class=MsoBodyText dir=ltr style="MARGIN: 0in 0in 0pt"><FONT
face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV class=MsoBodyText dir=ltr style="MARGIN: 0in 0in 0pt"><FONT
face="Comic Sans MS" color=#000080>Del</FONT></DIV></BODY></HTML>