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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A href="mailto:Wimblees@AOL.COM" =
title=Wimblees@AOL.COM>Wimblees@AOL.COM</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
href="mailto:Pianotech@ptg.org"
title=Pianotech@ptg.org>Pianotech@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, March 27, 2002 =
8:22
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> answer to mystery =
noise</DIV>
<DIV><BR></DIV>
<DIV><FONT face=arial,helvetica><FONT size=2>Only Roger attempted =
to answer
the mystery noise, so I'll give the answer. <BR><BR>To recap. "On a 25 =
year
old KG2, (5'2" Kawai grand, in very good condition, considering it is =
in a
practice room), there was a strange noise on notes d2 - g2. On a =
medium to
hard blow, it sounded like metal buzz. Upon closer inspection, it =
wasn't a
metal buzz, but a high pitched groan. Not only that, but a very small
adjustment on each key and a little rubbing in the right place, solved =
the
problem." <BR><BR>The noise came from the jack escaping from the =
knuckle. I
don't know why it did that, and why only on those notes, since all the =
jacks
were under the knuckles in the right place. But I solved the problem =
by moving
the jack 1/64" inch forward, and lightly filing the knuckle. =
<BR><BR>Wim
</FONT></FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2><FONT face=Arial>Hmmmm. I had a similar =
problem, but
it was a clicking, or "ticking", like when a catcher is loose on an
upright. But this was a Mason&Hamlin grand from the 50's and =
the
jacks were clicking when they contacted the knuckle. I could =
hear it
just tapping lightly on the keys, without the hammers even hitting the =
strings. Another client has a Korean Wurlitzer that does the =
same thing,
but louder. I don't know if M&H ever used Corfam, like =
Baldwin, but
the effect was the same. Somebody had applied some kind of stuff =
to the
knuckles, but it didn't help. If anything, it collected dust, =
packed
down, and made the clicking worse. So I cleaned all the knuckles =
with
drycleaning fluid, brushed the nap, lubed with powdered teflon, and =
that did
it. For a couple years. Now the faint "ticking" is coming =
back on
a few notes, but not as bad as it used to be. But lightly FILING =
the
knuckle, that I didn't even think of, and now I'm glad there's another =
</FONT></FONT><FONT size=2><FONT face=Arial>thing I can try if it =
gets
=
worse. &=
nbsp; &n=
bsp;
--David Nereson, RPT, =
Denver<BR></FONT></DIV></FONT></BLOCKQUOTE></BODY></HTML>