<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SERIF" FACE="Times New Roman" LANG="0"><I>In a message dated 7/12/2002 10:31:34 AM Pacific Daylight Time, pianobuilders@olynet.com writes:<BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:<B>Re: Bridge design </B><BR>
Date:7/12/2002 10:31:34 AM Pacific Daylight Time<BR>
From:<A HREF="mailto:pianobuilders@olynet.com">pianobuilders@olynet.com</A><BR>
Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A><BR>
To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A><BR>
<I>Sent from the Internet </I><BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">----- Original Message ----- <BR>
<B>From:</B> <A HREF="mailto:pianobuilders@olynet.com">Delwin D Fandrich</A> <BR>
<B>To:</B> <A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> <BR>
<B>Sent:</B> July 11, 2002 11:37 PM<BR>
<B>Subject:</B> Re: Bridge design<BR>
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Del</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0"></BLOCKQUOTE></BLOCKQUOTE><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SERIF" FACE="Times New Roman" LANG="0"> </FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SERIF" FACE="Times New Roman" LANG="0"> Thanks <BR>
Pre-molded rib radius. That is slick. Makes sense. Any observations to tonal differences? /superiority of Lam. ribs verses crown cut ribs? I suspect not and any tonal enhancement difference is in the design. Still on the learning curve.<BR>
What about number of laminations? Have you found an optimum? My thought is long deep ribs will require more thinner lams. or less thicker lams. and shorter ribs the same thing depending on some decision as to what's enough for adequate stiffness, consistency etc.<BR>
Economically more lams. means more machining<BR>
Dale Erwin</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"><BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"><BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"> </BLOCKQUOTE><BR>
<I>Consistency. Uniformity. Stability. And a predetermined and predictable crown radius -- we mold the various radii into the rib as it is being laminated.<BR>
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Del<BR>
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They also save us time and we are able to use up excess soundboard stock that would otherwise go to waste.<BR>
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Del<BR>
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