Kimbal/Piano disk

[Joe & Penny Goss]

PS, I forgot to mention that there is no dag to hold the action down in the
rear center only on the ends of the rear action. Could this be the problem
and if so have you any suggestions as how one should make a repair of fix
it?
----- Original Message -----
From: Joe & Penny Goss <imatunr@primenet.com>
To: <pianotech@ptg.org>
Sent: Friday, November 26, 1999 11:14 AM
Subject: Kimbal/Piano disk


> List,
> In working on a Kimbal grand that has been fitted with a piano disk
system,
> the major complaint was "the piano disk unit causes lots of noise".
> I  have done the following to quiet the unit but can still hear unwelcome
> noise.
> Bedded the key frame
> lubbed the frame drawer
> tightened all binding screws in the action, rim and case parts
> adjusted sustain
> I was not able to service the piano disk   action parts that raise each
key
> It is my belief that the most of the remaining noise is the result of the
> key stick being raised too fast or far so that when it returns to the key
> bed it does so with a clatter. Very softly but still a noise  that is not
> heard when the piano is played by human means.
>
> Would replacing the balance rail felt punchings or front felt help?
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