<!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 6.00.2900.2802" 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=rol=
e_document
face=Arial color=#000000 size=2>
<DIV>
<DIV><FONT size=3> Ric</FONT></DIV>
<DIV><FONT size=3> When you read John Hartman's articles on th=
e
"Effects of down bearing" on tone the method he describes in his 4=
th
installment is the way many people I know personally set up bearing lo=
ad
in their new boards including me. (old boards too with variations) It =
is
an old factory method used by Steinway & others to set bearing in the
factory. It doesn't take a genius to do it, just careful consideration
& attention to details including the approx EMC at the time one is
setting the bridge heights for bearing. </FONT></DIV>
<DIV><FONT size=3> The description of condition of bearing in =
the
1960's Stwy L I wrote of in a recent post & the toanl results =
I
routinely encounter in my own set up this way tells me that this method is q=
uite
accurate and capable of finding the sweet spot in boards with new or adequat=
e
crown. Putting a number on it nice but it won't change my procedure or=
outcome although inquiring minds always demand to know including
mine.</FONT></DIV>
<DIV><FONT size=3> In a board with little crown 200 pounds might be =
all
you could apply safely so a consensus will/should probably only apply to new=
boards. Oh yeah consensus....? here?? right!!!!</FONT></DI=
V>
<DIV><FONT size=3> Reading the articles will answer the question you=
ask
in your paragraph 2</FONT></DIV>
<DIV><FONT size=3> Happy reading or maybe you did that
already?</FONT></DIV>
<DIV><FONT size=3> Dale</FONT></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>Given
the fact that I am about to sink my feet into this kind of thing <BR>serio=
usly
for the first time... I shore nuf would like to see some <BR>semblance of
consensus formed here. Strikes me that a range of 200 to <BR>900 lbs=
of
down bearing on the soundboard is a rather huge window.
<BR><BR><STRONG><U>Could you guys please go a bit into how each of you arr=
ive
at your <BR>figures ? And I would also like some words on how typica=
lly
this load <BR>is spread over the panel.... along with a few words about ho=
w
one <BR>designs ribs to carry the load as it varies over the
board.</U></STRONG><BR><BR>Also... assuming the greatest load is up in the=
treble (which I seem to <BR>have got into my head is the case) how likely =
is
it that given a board <BR>with grain going perpendicular to the bridge wit=
h
the longest ribs then <BR>being in the treble area, would be able to hold =
up
against the minimum <BR>figure arrived at
above.<BR><BR>Thanks<BR>RicB<BR></FONT></BLOCKQUOTE></DIV>
<DIV></DIV>
<DIV> </DIV></FONT></BODY></HTML>