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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Bruce,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>It may not look pretty but. Try bridging the two support braces at
some point along the length; the goal to exert pressure inward or outward on
the rods in order to cancel any node coming from the length of the brace and to
place side pressure on the bracket pins? If you hold or squeeze the two
braces with your hands what force causes the buzz to stop? Also, try
putting felt balance rail punching under each lyre support screws? Goal of pre-muting
reducing the sound transference. I don’t know the number but
locktite I am sure makes a product specific for “soft” gap
filling. Dipping the hinges in Plasti Dip might work. <a
href="http://www.plastidip.com/home_solutions/Plasti_Dip">http://www.plastidip.com/home_solutions/Plasti_Dip</a>
Lots of colors to choose from. Hope you are able to catch the buzz.<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:black'>Kindest Regards, <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:black'>Garret <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:black'>---<o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <b>On Behalf Of </b>Bruce
Dornfeld<br>
<b>Sent:</b> Friday, July 11, 2008 12:29 AM<br>
<b>To:</b> pianotech<br>
<b>Subject:</b> Young Chang lyre supports buzzing<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'>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. <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'>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.<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'>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! <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'>Bruce
Dornfeld, RPT<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'><a
href="mailto:bdornfeld@earthlink.net">bdornfeld@earthlink.net</a><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"MS Sans Serif","serif"'>North
Shore Chapter<o:p></o:p></span></p>
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