I've had several Kawais that had wornout damper lifter rail flanges...those big suckers. Lots of noise is the clue...Only repair is replacement... David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Marcel Carey" <mcpianos at hotmail.com> To: pianotech at ptg.org Received: 5/19/2010 7:10:10 AM Subject: [pianotech] FW: Creaky damper lift tray >I find that most of these creaks (If it sounds like a metallic almost click) come from >the hanger flanges bushings. To test this, just try to move the whole tray from left >to right and if you hear the creak, this is the problem. If you can reach far enough, >you can apply protek or prolube to the offending flanges' bushings and the noise will >cease. You can try this method before removing the whole tray. I've had good >success with this method and the noise hasn't come back (3 years now). >Marcel >> To: pianotech at ptg.org >> From: barbara at pitchperfectpianos.com >> Date: Wed, 19 May 2010 12:41:05 +0000 >> Subject: Re: [pianotech] Creaky damper lift tray >> >> Thanks, list for all your advice. The piano I'm working on is about a 25 year old >Bergmann/Young Chang. In fact, I have 2 of them with this exact problem. >> >> I have narrowed the noise down to the point of contact when the tray touches >the underlevers. With the pedal trapwork, pitman, etc out of the way and the >underlevers suspended by the sostenuto, I raised and lowered the tray by hand, >finding that it did not creak until I raised it up to just touch the bottoms of the >underlevers. >> >> Yes, I was briefly dreading having to remove all the dampers and underlevers to >get to those hidden screws that hold the tray in that you can't really reach or see. >But, when I coated the damper tray felt with teflon, much of the noise was reduced, >but not silent. I'm thinking I may have to replace the felt entirely, as it looks worn >and fuzzy anyway. >> >> I'm kind of curious, or at least have my suspicions, about if that black stuff that >flakes off the music desk has anything to do with this. That stuff gets everywhere >and there is no good way about cleaning it up and getting rid of it as long as the >piano owners don't take the initiative of replacing it. Anyway, that's just my 2 >cents. :-) >> >> Well, it looks like another beautiful day to go and knock out a few pianos, so I'm >going to go find some willing culprits and see if they'll even pay me! Hope ya'll have a >good day! >> >> >> Barbara Nobbe, RPT >> Pitch Perfect >> 859-489-4793 >> barbara at pitchperfectpianos.com >> >> -----Original Message----- >> From: "Gerald Groot" <tunerboy3 at comcast.net> >> Date: Wed, 19 May 2010 07:56:51 >> To: 'Chuck C'<chchristus at earthlink.net>; <pianotech at ptg.org> >> Subject: Re: [pianotech] Creaky damper lift tray >> >> Many of my creaks turn out to be the little rubber gromments in the pedal dowel of >the pedal springs themselves. Lifting the the dampers off from the tray and >therefore, the weights of same, might just be enough to eliminate the creaking but, >have you then tried pushing down on the tray again with your hand? I have. Often >times, the added weight brings the creaking back again. Protek works great for that >usually if that be the case. Or, putting additional cloth inside of the coiled damper >spring and moving positions on it. >> > > >10 000 $ de magasinage avec Hotmail. Inscrivez-vous! > >_________________________________________________________________ >Gagnez 10 000 $ avec Hotmail! Participez ici. >http://go.microsoft.com/?linkid=9729718
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