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<DIV><FONT face=Arial>Bruce,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>It works well to re-locate the top of the lyre
support. The rods should really be pushing the lyre forward a little
anyway, so by re-locating the tops of the supports slightly closer to the lyre,
you "load" the system for best stability and strength. It also stops the
rods from buzzing.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>It's also easy to do, as the wood on the bottom of the
keybed is pretty soft. Just remove the screws, drop the support rod down
and plug the holes. Then raise the rod back into position, and
</FONT><FONT face=Arial>push the top of the support rod towards the lyre, and
drive the screws back in at the new location.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>While you're there, check that the pedal lyre isn't coming
apart where the posts meet the box. This could be the reason for the
support rods loosening. Fixing the lyre might also tighten the rods back
up in the original location.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Don Mannino</FONT></DIV>
<DIV><FONT face=Arial></FONT> </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=bdornfeld@earthlink.net href="mailto:bdornfeld@earthlink.net">Bruce
Dornfeld</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> Thursday, July 10, 2008 9:29
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Young Chang lyre supports
buzzing</DIV>
<DIV><BR></DIV>
<P>
<DIV>I have a number of grand pianos built by Young Chang that I service that
have the same trouble. The lyre support brackets vibrate or buzz with
some frequencies when the piano is played. When all of the
screws are tightened, there is too much play in the hinge. This is
most often causing noise at the top of the lyre support, but sometimes at the
bottom too. Sympathetic vibrations are always a pain, but I do not
know how to fix these. </DIV>
<DIV> </DIV>
<DIV>This week, I removed a pair of them to repair, First, I tried
hitting the pin with a ball peen hammer with the other end on an anvil,
but it only made it flatter outside of the hinge area. Previously, I
have tried wrapping some yarn around it, but it did not last. I have
considered squeezing the bracket around the pin, but is looks like cast metal
and I am afraid it might just break.</DIV>
<DIV> </DIV>
<DIV>There are tons of Young Changs out there. What are you all doing to
keep the lyre support brackets from vibrating along with the music? I
can't be the only one having trouble with these! Help me!
Please! </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Bruce Dornfeld, RPT</DIV>
<DIV><A
href="mailto:bdornfeld@earthlink.net">bdornfeld@earthlink.net</A></DIV>
<DIV>North Shore Chapter</DIV></BLOCKQUOTE></BODY></HTML>