Kimbal/Piano disk

[M. Seminuk]

Hi
If you have the test sequence in which the notes are played up and down the
keyboard ,play it and listen to the areas that are most noticeable.If it is
in the centre area ,and it is possible to push down on the rear of the
keybed from the top ,through the strings with a long screwdriver or
dowell,this might give you some idea of the noise source.Don't disregard the
front of the bed and also the glide screws.Good Luck

Murray
-----Original Message-----
From: Joe & Penny Goss <imatunr@primenet.com>
To: pianotech@ptg.org <pianotech@ptg.org>
Date: November 27, 1999 8:37 AM
Subject: Re: Kimbal/Piano disk


>Murray,
>The original left and right dags are still there but the center are
missing,
>having to be removed to make room for the solenoids. As far as I can tell
>the noise is mostly as the key is pushed by the solenoid with a smaller
>clatter as the key returns to the key bed. This makes me think that the
>balance rail hole in the key may be a little large like Jim suggests.
>Joe Goss
>----- Original Message -----
>From: M. Seminuk <seminukm@cadvision.com>
>To: <pianotech@ptg.org>
>Sent: Saturday, November 27, 1999 5:45 AM
>Subject: Re: Kimbal/Piano disk
>
>
>> 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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