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<DIV>In a message dated 2/18/2006 9:26:00 A.M. Pacific Standard Time,
rnossaman@cox.net writes:</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><BR> Dale wrote<BR>> Ok Now I,lm confused.&n=
bsp;
If were only trying to support only 400 to 600 <BR>> lbs. of down beari=
ng
force as Del inferred recently or whatever one <BR>> calculates this to=
be, then what's all the fuss about. <BR><BR>My loading of new
boards these days is typically half again <BR>over 600
lbs.<BR></FONT></BLOCKQUOTE>
<DIV> <EM> <STRONG>Ron, so you are saying a 900 lb bearing load is
probably an in the ball park average plus or minus for various sizes of=
pianos & string scale tensions.</STRONG></EM></DIV>
<DIV><EM><STRONG> Then my comment a couple weeks ago a=
bout
bearing being 1000 lbs or more depending on who you ask wasn't that fa=
r
off this figure even though Del disagreed with that as being
"excessive."</STRONG></EM></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>>It's
not that <BR>> much of a load. I've never seen ribs sheer, break =
or
explode under <BR>> bearing. I've seen compression crowned boards=
with fat crown & <BR>> bearing after 40 , 50 , 60 years or more tha=
t
sounded wonderful & the <BR>> ribs still intact & of course oth=
ers
that didn't.<BR><BR> Ron Wrote------- </FONT><FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=
=2>No, the
ribs don't usually explode, but I have seen broken <BR>ribs in the high en=
d
two or three times. <EM><U><STRONG>In this part of the <BR>country,
</STRONG></U><U><STRONG>it's rare to find old compression crowned boards w=
ith
<BR>decent crown and bearing.</STRONG></U></EM></FONT></BLOCKQUOTE>
<DIV> <STRONG><EM> Dale wrote---In our area we see it=
fairly commonly up to about as old as 60 years. But these survived in =
the
bay or on the coast where temperate climates are the rule.</EM></STRONG></DI=
V>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><=
FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=
=2>The ribs
do other things in these boards like straighten out when the <BR>> crow=
n
deflates but a stiff spruce crowned rib with nice tight straight <BR>>
grain & a laminated rib in my mind will do just about the same thing f=
or
<BR>> as long as we want them to if designed to handle the appropriate
loads. <BR>> And they will do it for a tremendously long time reliably.=
I
like the <BR>> whole laminated rib thing & all & there pretty i=
n a
techno sense too but<BR>> I'm just throwing out the questi=
on
is it overkill?<BR>> Flame suit on & feelin onry
today<BR>> Dale<BR><BR>Could be. Laminating costs me time =
to
glue them up, but saves <BR>me time to cut them out. It<U> uses spruce wit=
h
grain angles and <BR>color defects that would otherwise not be usable in b=
elly
<BR>work, so it's good conservation of materials</U>. I like that part <BR=
>a
lot, but then I'm still laminating bridges from salvaged <BR><EM>maple
racquetball court flooring.</EM></FONT></BLOCKQUOTE>
<DIV><EM><STRONG> All that appeals to me as well. Hey maple is
maple. I'm still making bridge caps from an upright that was made from=
solid beautiful maple ...every last piece</STRONG></EM></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>In fact,
at the cost of a <BR>little extra time, I can build up ribs over two or th=
ree
<BR>clamping's, that use up the shorter cutoffs that would <BR>otherwise b=
e
trash, on the rib bottoms where the feathering <BR>would cut away and wast=
e
good wood anyway. See photo. I also <BR>found it bothersome to bend, clamp=
,
and try to rip ribs to <BR>depth accurately with solid ribs, especially th=
e
tighter radii <BR>in the treble. With laminated, it's simple, accurate, an=
d
more <BR>easily controllable.</FONT></BLOCKQUOTE>
<DIV> <STRONG><EM>I admit it's tough to curve a 12 inch rib to a 20 ft=
.
radius & have thought about doing it differently</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><BR><BR>As far as performance goes once they're in the piano, I d=
oubt
<BR>there's much difference.</FONT></BLOCKQUOTE>
<DIV> <EM><STRONG>Zzzzaaactly what I'm
thinking.</STRONG></EM></DIV>
<DIV><STRONG><EM> Nice picture. Says a lot</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><BR>Ron
N<BR></FONT></BLOCKQUOTE>
<DIV></DIV>
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