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<DIV><FONT size=2>Greg,</FONT></DIV>
<DIV><FONT size=2> It's definitely =
quartersawn. I don't
think it's a candidate for recapping for two reasons. The board is =
dead
flat across the bass bridge and lower tenor bridge (as measured from the =
top and
confirmed on the bottom). Also I have learned the piano was =
purchased by
the client new some 16 yrs ago. I have no intention of condemning =
this
piano. It sounded ok before. Not spectacular bass but I have =
heard
much worse. I'm anticipating tight new bridge pins are going =
to
contribute to tonal improvement up higher.</FONT></DIV>
<DIV><FONT size=2> I'm wondering about the bearing =
in the
bottom of the piano. How it was originally set. Strung
it showed a full 1.5 deg across the bass bridge and almost nothing =
on the
bottom two feet of the tenor bridge.(also no front bearing in both =
of these
locations) Is this what flattened out the tail ? If I =
relieve
some of the bearing across the bass bridge will this improve the
situation? I'm used to seeing older pianos with little bearing on =
the bass
bridge. Opinions?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Steve Bellieu</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>P.S. Thanks for all the welcomes. I know =
some of
you and recognize lots of other names from Journal articles and
tips.</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=gnewell@ameritech.net =
href="mailto:gnewell@ameritech.net">Greg
Newell</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">Pianotech</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, December 18, =
2002 12:32
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Bridgetop =
Extravaganza
Revisited</DIV>
=
<DIV><BR></DIV>Steve,<BR><X-TAB>  =
; </X-TAB>Now
that you've decided to pull the plate I would strongly recommend =
simply
recapping the bridge with quarter sawn material unlike the flat sawn =
junk
you'll be removing. I' ve never seen quarter sawn material dented as =
badly as
you describe, even by well meaning newbies with a hammer and =
screwdriver. A
couple runners on the router and skin off the old cap. Put on a =
quarter sawn
cap of good solid material. Re - drill, notch and restring. I'll lay =
odds
you'll be greatly pleased with the result!!!<BR><BR>Greg =
Newell<BR><BR>P.S.
Welcome to the list!!!<BR><BR><BR><BR><BR>At 05:13 AM 12/18/2002, you
wrote:<BR><BR>
<BLOCKQUOTE class=cite type="cite" cite><FONT =
size=2> Hi
All, </FONT><BR><FONT size=2>Just joined, first post =
to this or
any other group. Serendipitous timing, just read all the =
recent
bridgetop/ bridgepin posts. Have a 1985 Stwy D in the shop for =
action
overhaul and restring. I thought I was noticeing something =
funny about
the bridges but was in denial until I started taking all the =
teardown
notes. The plain wire strings have been pounded (seated) into =
the
bridge so that at the edges there is more wire diameter below the =
bridge top
than above it. When viewed from the side the wire makes a =
pronounced
curve up onto the bridge and down again out the rear making accurate =
component readings impossible to do from on top of the wire. =
It was
showing negative front bearing until I realized what was happening =
and
started using the actual bridgetop as reference. Situation is =
most
severe at capo sections and diminishes down to what looks like =
normal
grooves to me under the bass strings. Deflection in strung =
piano is .5
deg at bottom of low capo, 1-1.5 deg rest of capo sweeping up =
to 2.5
deg at note 88. There is .250" crown at low capo. =
(measured from
top of board) </FONT><BR><FONT size=2> Is =
it
possible this condition is due to the quality of the capping
material? I usually work on much older =
instruments. I have
never seen string cuts like this. Also the various pressures =
have
caused dead wood to swell up and check here and there around the
terminations. Again I'm not used to seeing this. =
Inspection of
the pins under magnification shows the string resided in two =
distinct
locations. My theory: Pre- and Post =
Pounding. There
are also a lot of unexplainable nicks on the side of the pins. =
The
pins pull out easily. No cracks to speak of. This is an
institutional piano which has probably been in Southern California =
its whole
life.</FONT><BR><FONT size=2> What I'm thinking =
about
doing is similar to what Dale Erwin just posted. I've never =
done the
epoxy bridge thing but I'm familiar with the nasty stuff. I'm =
imagining
thickening it enough with colloidal silica so it won't run down the =
notches
or too much into the holes and applying it with a small =
spatula. I
want to fill those deep grooves (at least on the speaking side) and =
then
sand the top flat. If I put the stuff on in the morning can I
pare/renotch and redrill at the end of the day before it gets too =
hard and
while I can still find the original holes? </FONT><BR><FONT
size=2> Looking forward to peoples
responses.</FONT><BR> <BR><FONT size=2> I =
want to
stop using the misnomer "string seating" in favor of wire =
straightening (or
something similar) which is what I do at a low lateral angle =
(around
the bridges anyway). I have never been convinced of the need =
of
downward tapping pressure at the bridges. For some reason this =
is one
of the first things new technicians are taught and the thought of =
them going
around with little hammers and pounding on pianos scares me. =
We
straighten wire for control of damper and hammer contact and for =
quick
stabilization of new strings. Perhaps having the wire come =
straight
out of the bridge helps the string to vibrate in a more =
perpendicular plane
even. I don't really know. After you take a few pianos =
apart you
find that even in a negative bearing situation the angled pins hold =
the
string tight to the bridge. If there is so much negative =
bearing that
they don't then no amount of pounding will hold them there. =
But I
guess that is another thread. Right now I need help =
getting out
of this mess. I have finally accepted I have to pull the =
plate.
So much for the quick restring of a fairly new instrument.
</FONT><BR> <BR><FONT size=2>Thanks, Steve
Bellieu</FONT><BR><BR>---<BR><BR>Checked by AVG anti-virus system =
(<A
href="http://www.grisoft.com/"
eudora="autourl">http://www.grisoft.com</A>).<BR>Version: 6.0.427 =
/ Virus
Database: 240 - Release Date: 12/6/2002</BLOCKQUOTE><X-SIGSEP>
<P></X-SIGSEP>Greg Newell<BR><A href="mailto:gnewell@ameritech.net"
eudora="autourl">mailto:gnewell@ameritech.net</A>
<P>
<HR>
<P></P><BR>---<BR><BR>Checked by AVG anti-virus system
(http://www.grisoft.com).<BR>Version: 6.0.427 / Virus Database: 240 - =
Release
Date: 12/6/2002<BR>
<P>
<HR>
<P></P>_______________________________________________<BR>pianotech =
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