Noisy action

[Thomas Sheehan]

Jeannie -

Suggestion: please check to see that there is adequate side pressure of the
damper wire against the damper guide rail bushing. This is an overlooked
(but frequent) cause of rattling noises. One interesting way to check is to
pull the action, lift the underlever with your finger, and let it drop back.
The wire can rattle in the bushing noticeably.

See you in Reno, and best regards,

Tom Sheehan
NYC Chapter

----- Original Message -----
From: "Jeannie Grassi" <jgrassi@silverlink.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Wednesday, June 06, 2001 11:56 AM
Subject: Noisy action


> Hello All,
> I'm wondering if many of you have had a chance to tune a new Charles
Walter
> Grand?  I finally got a chance yesterday.  Lovely instrument.  But the
> complaint from the customer was about "excessive action noise".  This is
> specifically the noise that appears when the action parts (wippens,
hammers,
> keys) are dropping back to rest position.  Of course this happens in every
> action, but it did seem rather noisy for a piano of this quality with a
> Renner action.  I'm wondering if this is typical of this piano and what
> might be done to improve it?
>
> The keyframe did need a little bedding but I noticed no appreciable
> difference in the noise after correcting that.  The rest of the regulation
> was close enough to expect less noise.  The back rail cloth was glued on
one
> edge only, but it was the rear edge, which is the opposite to what I would
> expect.  I loosened the glue joint under the cloth in some spots expecting
> to hear a huge difference, but no appreciable change. All rails, flanges,
> brackets, etc. that are supposed to be tight, were tight.
>
> Anyone have similar experience with this piano or any more ideas for this
> sort of thing in general?
>
> Thanks,
> jeannie
>
> Jeannie Grassi, RPT
> Associate Editor, Piano Technicians Journal
> mailto:jgrassi@silverlink.net
>