[pianotech] S&S Damper thump

[Mark Dierauf]

I once had this problem on an O where the culprit turned out to mainly 
be the bass dampers. I was able to determine this by using the sostenuto 
to hold all 26 bass dampers raised whilst thumping away at the sustain 
pedal and seeing (hearing) that the noise was much reduced. I used a 
blanket to dampen the bass strings while I did this. Changing out the 
just the bass pads cured 90% of the problem.

- Mark

Phil Bondi wrote:
> Hi all.
>
> I ran across a S&S L (1967) today that had really loud thump 
> when the dampers come back to rest. At one point, I had 
> enough spring tension on that part of the trap work that I 
> could barely press down on the pedal, but the thump was 
> gone!..obviously not the correct fix.
>
> I'm thinking that the only fix for this is to change out the 
> damper felt.
>
> Are there any other thoughts? I appreciate them.
>
> -Phil Bondi(Fl)
>