Noisy Dampers on Shift

[paulrevenkojones at aol.com]

 Tom:

You might take a look at the trichord felt length (how far down through the strings they protrude). You can trim that felt, and compress it, but then need to re-time the damper since it will sit just a bit lower. 

Paul. 


 


 

-----Original Message-----
From: Thomas Cole <tcole at cruzio.com>
To: Pianotech <pianotech at ptg.org>
Sent: Tue, 15 Jul 2008 11:54 pm
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



 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080716/c554c0b7/attachment.html