Kimbal/Piano disk

[M. Seminuk]

Check to see if the rear dags are still there.If they were removed and not
replaced this can cause the rear of the key frame to bounce . Listen closely
to find if the noise is caused in the up or down motion of the solenoid.

Regards Murray
-----Original Message-----
From: Joe & Penny Goss <imatunr@primenet.com>
To: pianotech@ptg.org <pianotech@ptg.org>
Date: November 26, 1999 11:21 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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