[pianotech] Noise from strings after sustain pedal is depressed

[Joe And Penny Goss]

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
>
>
>