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<DIV>In a message dated 9/23/2003 8:06:48 AM Pacific Daylight Time, RNossama=
n@cox.net writes:</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue =
2px solid"><FONT face=Arial>>Sorry, that wasn't very clear... was it?&n=
bsp; I meant a wide board and very long<BR>>too -9'3" I think - can't rem=
ember seeing a cut-off bar either. The ribs are<BR>>short in height, and =
a bit thick. I have real concerns about the longevity<BR>>of these pianos=
especially if there is little or no crown!<BR>><BR>>Cheers<BR>>Mar=
k Bolsius<BR><BR>Let's do a general rib nomenclature alert first, since this=
seems to come <BR>up occasionally. If we use "long" and "short" for the end=
to end "length" <BR>of ribs, "thick" and "thin" for the "height", and "wide=
" and "narrow" for <BR>the "width", when someone says the ribs are short, th=
in and wide, there's a <BR>minimum of confusion - theoretically.<BR><BR>I'm =
not so sure there's a longevity concern here. If there is in fact <BR>little=
to no crown in these pianos, then the intended soundboard impedance <BR>isn=
't produced by high compression levels in the panel, but rather by the <BR>m=
ultitude of ribs. If the panel isn't under high compression levels, th=
e <BR>assembly doesn't have the built in self destruct mechanism of a compre=
ssion <BR>crowned board. If there's no unnaturally high strain being placed =
on <BR>materials incapable of supporting it in the long term, the life of th=
e <BR>structure should be comparatively long.<BR><BR>Ron</FONT></BLOCKQUOTE>=
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<DIV><FONT face="Times New Roman" color=#000040 size=4> &nb=
sp; Ron</FONT></DIV>
<DIV><FONT face="Times New Roman" color=#000040 size=4> Th=
anks for the needed clarity. You do that so well.</FONT></DIV>
<DIV><FONT face="Times New Roman" color=#000040 size=4> &nb=
sp; Dale</FONT></DIV></BODY></HTML>