<html>  <head></head> <body>  <DIV></DIV> Thanks Dean, I'm sure this Yamaha has a stop screw, and I'll follow your advice.   Rick Ucci/Ucci Piano <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message from "Dean May" <deanmay@pianorebuilders.com>: -------------- <META content=Word.Document name=ProgId> <META content="Microsoft Word 10" name=Generator> <META content="Microsoft Word 10" name=Originator><LINK href="cid:filelist.xml@01C615C1.2686FCD0" rel=File-List> <STYLE>  </STYLE>  <DIV class=Section1> To minimize thumping dampers you should minimize their travel. There should be a stop screwed into the keybed directly above the pedal lift rod. Adjust the stop down until the bicord dampers are just coming off the string. To adjust it really “hot” the bottoms of the bicords do not have to clear the top of the string- leave some of the wedge down between the strings. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p> <o:p> </o:p> As you minimize the lift off the strings you are also minimizing the dampers’ return velocity, which will also minimize the thumping. <o:p></o:p> <o:p> </o:p> BTW, if there is no stop screw there, just put one in. A 1/4 X 1 inch hex bolt works great. Drill a hole in the keybed and thread the bolt into it. Glue a piece of felt on top of the trapwork lever and, viola, you have a stop adjustment. <o:p></o:p> <o:p> </o:p> <DIV> Dean<o:p></o:p> Dean May             cell 812.239.3359<o:p></o:p> PianoRebuilders.com   812.235.5272<o:p></o:p> Terre Haute IN  47802<o:p></o:p></DIV> <o:p> </o:p> -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of James Grebe Sent: Tuesday, January 10, 2006 8:25 AM To: Pianotech Subject: Re: thumping dampers <o:p> </o:p> <DIV> Move the mic further away from the dampers.  Most place it too close.<o:p></o:p></DIV> <DIV> James<o:p></o:p></DIV> <DIV> James Grebe   Piano Tuning & Repair   Member of M.P.T.  R.P.T. of the P.T.G. for over 30 years.   "Member of the Year" in 1989    Creator of Handsome Hardwood Caster Cups, Piano Benches, Writing Instruments (314) 845-8282   1526 Raspberry Lane   Arnold, MO 63010 BECOME WHAT YOU BELIEVE! <A href="mailto:pianoman@accessus.net">pianoman@accessus.net</A><o:p></o:p></DIV> <BLOCKQUOTE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0in; MARGIN: 5pt 0in 5pt 3.75pt; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none"> <DIV> ----- Original Message ----- <o:p></o:p></DIV> <DIV style="font-color: black"> From: <A title=richard.ucci@att.net href="mailto:richard.ucci@att.net">richard.ucci@att.net</A> <o:p></o:p></DIV> <DIV> To: <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> <o:p></o:p></DIV> <DIV> Sent: Monday, January 09, 2006 7:59 PM<o:p></o:p></DIV> <DIV> Subject: thumping dampers<o:p></o:p></DIV> <DIV> <o:p> </o:p></DIV> <DIV> Hi Listers,<o:p></o:p></DIV> <DIV>  <o:p></o:p></DIV> <DIV> Client with a new Yamaha ga-1 is complaining that the dampers make a thumping noise when his foot is taken off the sustain pedal. He is doing some recording and it is very noticable to him. Other than changing the spring to one with less tension , what would be a solution to his problem?<o:p></o:p></DIV> <DIV>  <o:p></o:p></DIV> <DIV> Thanks,<o:p></o:p></DIV> <DIV> Rick Ucci/Ucci Piano <o:p></o:p></DIV></BLOCKQUOTE></DIV></BLOCKQUOTE>  </body> </html>