Hi Renee, It is usually caused by all the damper felt dragging against the string as the dampers are raised. Usually not noticable when only one damper is raised with the key or underlever. Cure is to carfully trim the excess damper felt that sticks down below the wire on a grand. If an old upright there is usually lines on the felt where the damper felt has rested against the strings over the years that you can use as a guide to snip off the excess felt. A good pair of SHARP sheers is a must for this work Joe Goss RPT HTHs Mother Goose Tools imatunr at srvinet.com www.mothergoosetools.com ----- Original Message ----- From: "Renee Ingeberg" <ringeberg at mac.com> To: <pianotech at ptg.org> Sent: Friday, March 20, 2009 9:18 AM Subject: [pianotech] Noise from strings after sustain pedal is depressed > > Does anyone know why some instruments have noise coming from the > strings after the sustain pedal is depressed and others don't? Its > like a swishing sound... > Causes, etc. > Would appreciate any help. > > Renee > > >
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