[pianotech] ringing dampers

[tnrwim at aol.com]

I'm on board with this too! Those long dampers can be deceiving - they can look like they are aligned at the top, but may be off on the bottom. It's pretty hard to see, so it's easy to miss! Its amazing to me how one string not being damped well can cause so much noise! 



Ryan
 
This is what the problem was. Today I went back to take care of the problem, and the first thing I did was carefully look at the offending notes, mostly F#2 to A#2. On those, the bottom half of the felts were not seated between the two strings. On some of them it was just the bottom part of the bottom felt that had curled over, which was preventing the rest of the felt from contacting the string completely. Once I got them all aligned, the overtones were gone. 

Thanks for all the suggestions. 

Wim   






-----Original Message-----
From: Ryan Sowers <tunerryan at gmail.com>
To: pianotech <pianotech at ptg.org>
Sent: Sat, Nov 13, 2010 1:22 pm
Subject: Re: [pianotech] ringing dampers


I'm on board with this too! Those long dampers can be deceiving - they can look like they are aligned at the top, but may be off on the bottom. It's pretty hard to see, so it's easy to miss! Its amazing to me how one string not being damped well can cause so much noise! 


On Sat, Nov 13, 2010 at 4:30 PM, John Formsma <formsma at gmail.com> wrote:


On Sat, Nov 13, 2010 at 3:56 AM, Gregor _ <karlkaputt at hotmail.com> wrote:



Maybe only one damper is the culprit. Try to find it by dampening succesive all the bass strings by hand.






This is what I'm thinking as well. 1 or 2 of the lowest bass dampers isn't damping well, allowing sympathetic vibrations to occur. Perhaps one of the damper levers was bumped out of place during removal and/or work.


Of course, it's hard to say without actually being there to look at it. Tried fluffing and/or replacing an offending damper felt?  I'd be checking other things first since there is an apparent pattern with the F#'s and A#'s.

-- 
JF




-- 
Ryan Sowers, RPT
Puget Sound Chapter
Olympia, WA
www.pianova.net

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