Intermittent ZINGing Chopin on M&H 1923 model AA

[Mike Kurta]

    Dave, I ran into this once and found the damper wire was too close to a
string and at certain times a buzzy zing would occur.  Maybe?
    Mike Kurta
----- Original Message -----
From: "Dave Smith" <dsmith941@comcast.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Sunday, July 13, 2003 5:08 PM
Subject: Intermittent ZINGing Chopin on M&H 1923 model AA


> I installed a dampp chaser on a nicely rewhatevered  M&H AA circa 1923
which
> just migrated to Florida.  Will  be going back to tune in a month or so.
> Meanwhile, owner complains of a buzzing or zinging sound on G#6 which is
> intermittant and only appears once in a while in a certain Chopin Etude.
> Sure enough, no amount of my playing around with this or adjacent notes
> caused the problem, but I did hear it when she played the Chopin.  Very
> short ZINGing sound as if a small screwdriver momentarily touched the
> string.  Damper felt looks normal.   Damper adjustment seems right.  I
could
> see nothing out the the ordinary, at least to my eyes.  I removed the
action
> and checked the damper wire screw for this note, it was tight.  I did,
> however, notice that by manually lifting and dropping each damper lever,
the
> one for G#6 caused a more metallic  sound when dropped than did its
> neighbors.  Could not figure out why.  Need to be able to fix this noise
> upon returning next month.
>
> I have read the archives on damper zing.  Dont think it is damper felt
> problem in this case.  Wondering if loose damper lift flange or a flukey
> damper spring maybe could cause this sound?  If so, the damper flange
screws
> on this model appear to be inaccessable, as they are vertical.  Looks as
if
> the entire damper assemply would have to come out just to check lift
flange
> screws.
>
> It's likely I've missed some basic thingee that everyone else knows.  Hope
> so!  I would appreciate any thoughts on troubleshooting this noise, as
well
> as any insight on how the damper lift flange screws can be tightened,
short
> of removing entire damper assembly.
>
> Dave Smith
> SW FL
>
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