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<DIV><FONT face=Arial size=2>Oh you guys, don't you know? It =
just depends
on what your definition of permanent is........:-)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Barbara Richmond, RPT</FONT></DIV>
<DIV><FONT face=Arial size=2>somewhere near Peoria, IL</FONT></DIV>
<DIV><FONT face=Arial size=2>and, dang, it's cold!</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=mfarrel2@tampabay.rr.com
href="mailto:mfarrel2@tampabay.rr.com">Farrell</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> Wednesday, January 28, =
2004 4:39
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Permanent =
Soundboard
Crown!</DIV>
<DIV><BR></DIV>
<DIV>
<DIV class=block>
<P><FONT face=Arial size=2>Hey Ric, maybe you'll enjoy this one =
more - it goes
even further - from the Bluthner web site:</FONT></P>
<P><FONT face=Arial size=2><EM>At the beginning of piano making =
the soundboard
consisted solely of a thin wooden board, stiffened with bars glued on =
the
underside and the bridges on the upper side. Further development was =
derived
from the soundboard of a violin with its spherical crown. However the
soundboard of a violin is made of a thick piece of wood being shaped =
by
grinding, chipping and sanding into its final =
form.</EM></FONT></P><FONT
face=Arial size=2><EM></EM></FONT>
<P><FONT face=Arial size=2><EM>A piano soundboard is made from a =
thin board
being bend by force into this form. This method however produces =
disadvantages
comparable to those which one will experience when you try to put a =
sheet of
paper atop a ball.</EM></FONT></P>
<P><FONT face=Arial size=2><EM>Studies made by Bluthner research =
and
development department have proven that tensions and compressions =
develop on
the edges that are inhomogeneous and not controllable. In contrast, =
the
soundboard that Bluthner has developed has a cylindrical curvature so =
that the
tension of the soundboard can be exactly defined. The ribs are planed =
to fit
the curvature needed and therefore the tension of the soundboard =
remains
intact over the decades. In fact, even under difficult climatic =
conditions the
curvature will remain in a constant form since not only the rib =
structure will
hold it in place but also the red beech inner rim is preformed to the =
correct
angle to receive and retain the soundboard's curve tension. Because =
the
soundboard is pre-stressed in this fashion it can be fitted exactly =
and
<U>remain under curve tension permanently.</U> The bridge, of course, =
is
adapted to the tension and curvature of the soundboard in its optimum
position. This ensures that string vibrations in their full spectrum =
are
transferred to the soundboard. By utilizing the resonating surface, =
the
special design of the Bluthner soundboard generates tone significantly =
better.
</EM></FONT></P>
<P><FONT face=Arial size=2>Ok, new terms now. "Curve tension" - =
any engineers
out there? Look that up in your old Engineering 101 book. Cylindrical
curvature? The top of their inner rim in not more-or-less planar (and =
the few
that put a slight rise in the concave curved side doesn't count)? And =
somehow
the angled inner rim retains the soundboard's curve tension! Also, how =
does
one go about adapting a bridge to tension and curvature? The curvature =
I can
roll with, but the tension? Who/what is pulling where? Or maybe they =
are just
pulling our leg?</FONT></P>
<P><FONT face=Arial size=2>Fun thoughts.</FONT></P>
<P><FONT face=Arial size=2>Terry Farrell</FONT></P></DIV></DIV>
<DIV><FONT face=Arial size=2>----- Original Message ----- </FONT>
<DIV><FONT face=Arial size=2>From: "Richard Brekne" <</FONT><A
href="mailto:Richard.Brekne@grieg.uib.no"><FONT face=Arial
size=2>Richard.Brekne@grieg.uib.no</FONT></A><FONT face=Arial
size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>To: "Pianotech" <</FONT><A
href="mailto:pianotech@ptg.org"><FONT face=Arial
size=2>pianotech@ptg.org</FONT></A><FONT face=Arial =
size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>Sent: Wednesday, January 28, 2004 =
1:53
AM</FONT></DIV>
<DIV><FONT face=Arial size=2>Subject: Re: Permanent Soundboard
Crown!</FONT></DIV></DIV>
<DIV><FONT face=Arial><BR><FONT size=2></FONT></FONT></DIV>
<DIV><FONT face=Arial size=2>> Grin...<BR>> <BR>> Funny =
how we keep
running into this from so many places isnt it ? You <BR>> =
simply have
to wonder :)<BR>> <BR>> Cheers<BR>> RicB<BR>> <BR>> =
Farrell
wrote:<BR>> <BR>> > From the Kawai US web site - =
enjoy!<BR>>
> <BR>> > *The Drying/Re-Moisturizing Process.* Kawai =
employs
an inventive <BR>> > method to create a permanent soundboard =
crown.
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial =
size=2>SNIP</FONT></DIV></BLOCKQUOTE></BODY></HTML>