<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=US-ASCII">
<META content="MSHTML 6.00.5730.11" name=GENERATOR></HEAD>
<BODY id=role_body style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Arial"
bottomMargin=7 leftMargin=7 topMargin=7 rightMargin=7><FONT id=role_document
face=Arial color=#000000 size=2>
<DIV>
<DIV> <STRONG><EM>William</EM></STRONG></DIV>
<DIV><STRONG><EM> Good clear post. We should save this as a
definition has been asked for about 3 times this week & it
is a good descrpition of the various design processes we frequently speak
of.</EM></STRONG></DIV>
<DIV><STRONG><EM> Sincerely</EM></STRONG></DIV>
<DIV><STRONG><EM> Dale</EM></STRONG></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>
<DIV><FONT face="Bookman Old Style">Paraphrasing from the weeks
discussion:</FONT></DIV>
<DIV><FONT face="Bookman Old Style"></FONT> </DIV>
<DIV><FONT face="Bookman Old Style">Steinway NY builds CC boards, and most
everyone else on the planet builds RC boards. A few of us small shop
rebuilders are designing, building, and installing RC&S boards. Currently,
I don't think there is a RC&S board piano being produced commercially. I
expect that to change, hopefully soon.<BR></FONT></DIV>
<DIV><FONT face="Bookman Old Style">RC & S does not require the soundboard
panel (and ribs) being dried prior to glue-up to the extent that the
classical RC method calls for. RC&S needs no help from panel
compression to support string bearing.<BR></FONT></DIV>
<DIV><FONT face="Bookman Old Style">The purpose of designing crown into an
RC&S board is to provide an opposing spring for the string downbearing,
just like with RC and CC boards (and to prevent cracking in the dry
seasons). The difference is that the crown support comes pretty much entirely
from the ribs in the RC&S boards, and either partially or entirely from
the panel in RC and CC boards (respectively).<BR></FONT></DIV>
<DIV><FONT face="Bookman Old Style">Hope it helps.</FONT></DIV>
<DIV><FONT face="Bookman Old Style">William R.
Monroe</FONT></DIV></FONT></BLOCKQUOTE></DIV>
<DIV></DIV>
<DIV> </DIV></FONT></BODY></HTML>