If you lift just the underlevers with a stick or such do you still get the sound? That would eliminate or narrow towards the tray...? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Mike Spalding" <mike.spalding1 at verizon.net> To: Pianotech <pianotech at ptg.org> Received: 1/30/2009 3:14:50 PM Subject: [pianotech] singing sustain, what to do? >Relatively new small Essex grand. When the sustain pedal is operated >very slowly, it makes a moaning noise. Removed the action, removed the >pitman, and raised the tray by hand, heard the noise. Here's what I >think is causing it: the lift tray is aluminum, the felt is soft and >thick, and the tray pivot is nowhere near the underlever centers. So >when the tray is lifted, the underlevers slide on the felt, playing the >aluminum tray like a violin. What to do? My inclination would be to >replace the tray felt with something harder/smoother, and polish the >undersides of all the underlevers with 400 grit sandpaper or finer. But >before going to all that trouble, I thought I would toss the question >out to the list, and see if anyone else has encountered this, and what >you did to fix it. Any thoughts? >thanks >Mike Spalding
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