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<DIV><FONT size=3> Stephane</FONT></DIV>
<DIV><FONT size=3> Well I saw no responses to the can- o - wor=
ms
post ..........grin</FONT></DIV>
<DIV><FONT size=3> SO I kind of hate to wade i=
nto
this but I'll try to make it as simple as my mind usually works. If I
translate what your saying accurately, your concern is that your total=
residual lowell gauge bearing reading of 6 marks on the gauge is too much. I=
s
this right? 6 times .003 =.018 or 1 degree</FONT></DIV>
<DIV><FONT size=3> If so this would would be a great deal of b=
earing
for an old flat soundboard. IMHO.</FONT></DIV>
<DIV><FONT size=3> I'll refer you to setting bearing to 1995 PTJ art=
icles
by John Hartman for (One) concise method of setting bearing &=
;
also general guidelines.</FONT></DIV>
<DIV><FONT size=3> It is not the only method but the one=
I
subscribe to presently as do many others</FONT></DIV>
<DIV><FONT size=3> In a fully crowned board It would be common to de=
tect 2
plus degrees of bearing in the top trebles(tweeters) 1 & 1/2" in the Alt=
o
region(middle of the board) & 1/2 degree in the low tenor( the che=
llo
section). Trebles require more pressure stiffness to drive high frequency.
Bass sections virtually none to make bass. But I like some (1/2degree)=
on
larger pianos without cantilevered bass bridges.</FONT></DIV>
<DIV><FONT size=3> More than any of the above . Does the piano sound=
good
?? This tells a huge story. Has the board assumed a flat compressed conditio=
n.
Meaning the crown has been squashed down to a flat state & not tur=
ned
inside out or upside down or concave. </FONT></DIV>
<DIV><FONT size=3> If a board of this age has been shimmed it =
is a
falt board & IMO there will not be an appreciable crown to work wi=
th
so only small degrees of bearing are prudent or tonal distorations & mal=
adys
of all kinds can develop. Amhik</FONT></DIV>
<DIV><FONT size=3> I dont' know if this helps any one but there it
is.</FONT></DIV>
<DIV><FONT size=3> & It's JMHO</FONT></DIV>
<DIV><FONT size=3> Dale Erwin</FONT></DIV>
<DIV><FONT size=3> </FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><=
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=2>
<DIV><FONT face=Arial size=2>Hello list.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>This old 1864 Pleyel (again) has many fea=
tures
which I think are quite straight forward.</FONT></DIV>
<DIV><FONT face=Arial size=2>The rim and the ribs are shaped so there =
is
nearly no crown in the bass bridge regio, few in the tenor, lots in the al=
to
and again less in the high trebble. In the original setting, downbea=
ring
followed this pattern : nearly no on the bass bridge, few on the low long
bridge, lots in the trebble and less again in the high trebble.</FONT></DI=
V>
<DIV><FONT face=Arial size=2>My question is : in such an arrangement, =
can we
set more downbearing in this alto area than if the downbearing were spread=
on
the whole scale ? How much could I put there ? For now, after
soundboard shimming, there are as much as three graduations on the Lowell
gauge, in front bearing and in rear bearing. I'm used to consider th=
is
quite much. Any opinions ?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Best regards,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Stéphane
Collin.</FONT> </DIV></FONT></BLOCKQUOTE></DIV>
<DIV></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT lang=0 face=Arial size=2 FAMILY="SANSSERIF" PTSIZE="10"=
>Erwins Pianos
Restorations <BR>4721 Parker Rd.<BR>Modesto, Ca 95357<BR>209-577-8397<BR>Reb=
uilt
Steinway , Mason &Hamlin
Sales<BR>www.Erwinspiano.com</FONT></DIV></FONT></BODY></HTML>