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<HTML><HEAD><TITLE>RE: "Dead Keys - Noisy Hammers"</TITLE>
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<DIV><STRONG><FONT face=Arial>I should have read the message, I was just
replying about the springs. I assumed (one should never assume), that the
problem had been determined to be the springs.</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=Arial>Could the noisy hammers, be corfam on the
butts?</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=Arial>Sluggishness, I have normally found to be tight
action centres, especially on the Baldwin, Hamiltons.</FONT></STRONG></DIV>
<DIV>John M. Ross<BR>Windsor, Nova Scotia, Canada<BR><A
href="mailto:jrpiano@win.eastlink.ca">jrpiano@win.eastlink.ca</A></DIV>
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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 title=tune4u@earthlink.net href="mailto:tune4u@earthlink.net">Alan
Barnard</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, June 08, 2007 2:06 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: "Dead Keys - Noisy
Hammers"</DIV>
<DIV><BR></DIV>
<DIV>
<DIV class=RTE>You are asking for help with a symptom that can be caused by
many things and interactively, too. Why did you immediately assume it was jack
springs? In my experience, that is rarely the problem unless they are broken
or really rusty.</DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>More likely causes include poor regulation (lost motion or lack
thereof); bad hammer, jack, wippen, or butt pinning; slow key return (dirt,
foreign objects, warped keys, rusty rail pins, ...); hammers misaligned; and
more.</DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>I'd start with the keys, then look at regulation, then hammer
swing (you can try some Protek or similar, or alcohol shrinking if they are
tight). Do you have a copy of Reblitz?<BR><BR>Alan Barnard<BR>Salem,
MO<BR><BR></DIV>
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Original message<BR>From: "Steven Hopp"
<HOPPSMUSIC@HOTMAIL.COM> </HOPPSMUSIC@HOTMAIL.COM><BR>To:
pianotech@ptg.org<BR>Received: 6/8/2007 9:33:16 AM<BR>Subject: "Dead Keys -
Noisy Hammers"<BR><BR>
<DIV>
<DIV class=RTE>
<P>Hello,</P>
<P>I am new to repair and have a question. I recently worked on a
Baldwin upright with wire lifters. Several of the keys noted by the
customer played but would go "dead" after several strikes. The jacks
were not resetting. So I replaced those jack springs. Upon
replacing the action (pain in the neck) we found several more "dead
keys". Question: Is it ever necessary to replace all the jack
springs on a piano about 50 years old? Are there any good reading
materials on this action?</P>
<P>Also, A few of the hammers seem to make a rattling noise when they
hit the keys. They seem loose but I can't tell and the noise happens
when the strings are struck. What should I look at to repair this
problem? </P>
<P>As an aside - the piano sat dormant for at least 30 years with no care at
all in West Texas.</P>
<P>Thanks<BR><BR></P>
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