Noisy Dampers on Shift

[David Love]

You've received many suggestions but have you checked to see whether the
shift on the offending notes is the same as the other notes?  In other
words, does the hammer on the offending notes shift off the strings to the
same degree as the others?  Also, does the same thing happen when you only
partially engage the una corda pedal so the shift doesn't actually come off
the left hand string?

 

David Love
davidlovepianos at comcast.net
www.davidlovepianos.com 

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Thomas Cole
Sent: Tuesday, July 15, 2008 9:55 PM
To: Pianotech
Subject: Noisy Dampers on Shift

 

I just acquired a client who bought a new F183 Fazioli. Obviously it's a
very nice piano, but the owner is complaining of improper damper function on
several notes starting above C4, especially on shift. The hammers all shift
off of the first string in Faziolis so I can see that there might be some
phase shift between the strings of each unison challenging the dampers, but
he's only complaining about a handful of notes in the fourth octave.

The fact that the owner is formerly a synth player is likely why this effect
was so noticeable to him, but I must admit the buzzy cutoff on a slow
release of the key is not at all subtle. Even the dealer over the phone
could hear it.

So far, the trichord wedges are exerting equal pressure on the strings
(plucking doesn't reveal any leaks or uneven damping) and the dampers follow
when pressing on the strings. The technician who prepped the piano didn't
notice a problem but who checks damper function on shift?

Anyone care to take a shot at it?

Tom Cole

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