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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=Erwinspiano@aol.com
href="mailto:Erwinspiano@aol.com">Erwinspiano@aol.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> November 24, 2002 9:04 =
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Belly rail crown - =
Why???</DIV>
<DIV><BR></DIV>
<DIV><FONT face=arial,helvetica><FONT lang=0 face="Times New =
Roman" size=2
FAMILY="SERIF">In a message dated 11/24/2002 12:23:50 AM Pacific =
Standard
Time, <A =
href="mailto:pianobuilders@olynet.com">pianobuilders@olynet.com</A>
writes:<BR><BR></FONT><FONT lang=0 style="BACKGROUND-COLOR: =
#ffffff"
face="Comic Sans MS" color=#000080 size=2 =
FAMILY="SCRIPT"><BR></FONT><FONT
lang=0 style="BACKGROUND-COLOR: #ffffff" face="Times New Roman" =
color=#000000
size=2
=
FAMILY="SERIF"> &n=
bsp;
</FONT><FONT lang=0 style="BACKGROUND-COLOR: #ffffff" =
face="Comic Sans MS"
color=#000080 size=2 FAMILY="SCRIPT">And, that's pretty much my
point. <BR> <BR> =
Del- <BR>
My point though (lame is) that there is a cohesive stiffening =
factor
when the whole things glued up to the rim though. I have no major =
investment
in the idea of the spruce panel itself being glued down as being more =
than a
small factor in the whole stiffness =
equation. </FONT></FONT></DIV>
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face="Comic Sans MS" color=#000080 size=2
FAMILY="SCRIPT"></FONT></FONT> </DIV>
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face="Comic Sans MS" color=#000080 size=2 =
FAMILY="SCRIPT">
I'm completely lucid about the idea of the majority of the stiffness =
coming
from the ribs stiffness via materials & design but the whole unit =
is
stiffer when the rib ends can't move any more being glued to the rim =
that is
it not?<BR> </FONT></FONT></DIV><FONT =
face=arial,helvetica><FONT lang=0
style="BACKGROUND-COLOR: #ffffff" face="Comic Sans MS" =
color=#000080 size=2
FAMILY="SCRIPT"></FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000080 2px solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face="Comic Sans MS" color=#000080 FAMILY="SCRIPT">And my point =
is that the
stiffness of the wood does not change just because one end of it is =
glued to
(in this case) the rim of a piano. The whole panel may seem stiffer to =
you,
yes, because it is no longer a free-edged panel that can fairly easily =
be
twisted. But the characteristics of the wood remain the same. When all =
is said
and done, wood is simply an engineering material.</FONT></FONT></DIV>
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face="Comic Sans MS" color=#000080 size=2 =
FAMILY="SCRIPT"> </DIV>
=
<DIV><BR> &nbs=
p;
Well then another perhaps faulty thought comes to mind and it doesn't
necessarily support my previous statement. Why not just adopt =
the
Charles Fredrick Stein concept of leaving the rib ends thick and just =
glue
them to the a notched liner. Heck forget the notch and glue them =
right
on top of the rim? Anyway this leaves the thin soundboard edge
unclamped/unglued around a majority of the board except at the belly =
rail and
around the first part of the treble curve. He probably didn't thin the =
edge
either come to think on it.</FONT></FONT></DIV><FONT
face=arial,helvetica><FONT lang=0 style="BACKGROUND-COLOR: =
#ffffff"
face="Comic Sans MS" color=#000080 size=2
FAMILY="SCRIPT"></FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000080 2px solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face="Comic Sans MS" color=#000080 FAMILY="SCRIPT">There is at =
least one
Chinese manufacturer who has been doing something like this for some =
time
now -- not intentionally, though, and not by design. They failed =
to cut
the notches deep enough and left the feathered rib ends too
thick.</FONT></FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS"
color=#000080>Del</FONT></DIV></BLOCKQUOTE></BODY></HTML>