Unstable piano

[Richard Moody]

... what kind of piano is this ? How old, and whats your
> evaluation of its present condition ?

A  Kimball, studio upright, from the 70 or 80's I suppose.
Aside from making sure every plate screw is snug, it might be a
bad fitted pinblock, a warped plate, or weird environment.   Damp
Chaser?  I would want to measure the room humidity for two weeks.
Or put it in a different room, or put another piano beside it in
the same room.
    I would like to drop the tension and loosen the plate but
check at least 10 things before.   Make sure the bass bridge is
secure, the block is not pulling from the frame, the sb is secure,
check the bearing, tune it one more time and a few things others
might suggest.
    Now here is a good use for a machine.  Tune it up, freeze the
lights and come back two weeks later.   A visual indication of out
of tuneness, especially degree of out of tuneness, from the last
time.  But it would be more "graphic" to hear it.      ---rm




    ----- Original Message -----
From: Richard Brekne <Richard.Brekne@grieg.uib.no>
To: Pianotech <pianotech@ptg.org>
Sent: Sunday, December 29, 2002 8:21 AM
Subject: Re: Aural versus ETD tuning training



>
> Ric Moody Wrote
>
> >
> > Heheh, I know a studio upright in a choir room that NOBODY can
> > tune.   The question is, is the room environment wildly
varying?
> > the last tuner a klutz? or some defect in the piano?.
Regarding
> > the "last tuner", I was the last tuner, who followed myself,
who
> > followed a RCT tuning done as part of a seminar by a local
> > chapter.
> >     I would love to bring this piano to a "National" and have
any
> > person tune it by whatever---machine or aural method.   Then
> > critique it the next day  by  any tuner and expect to hear,
"This
> > is what you call a professional tuning?"
> >     What is causing this would make  a great seminar. Warped
> > plate? pin block not set? loose struts? too much bearing?
"warped
> > soundboard"?   or ??     ---rm
> >
>
> Neat idea... what kind of piano is this ? How old, and whats
your
> evaluation of its present condition ?
>
> --
> Richard Brekne
> RPT, N.P.T.F.
> UiB, Bergen, Norway
> mailto:rbrekne@broadpark.no
> http://home.broadpark.no/~rbrekne/ricmain.html
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