Baldwin "whoosh"

[Jon Page]

>  It is also similar to the sound of old, elongated tri-chords lifting
>through the strings...but this is NOT the source of the sound.

Probably the damper wire is slightly corroded and drags
on the guide rail bushing.

Usually polishing the wire with a wax and white ScotchBrite
reduces the noise.
-- 

Regards,

Jon Page
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080502/6873d512/attachment.html