[pianotech] lubricating damper springs?

[Paul T Williams]

Gregor,

Do the springs have a green gunk built up on them?  clean up with mineral 
spirits or Flitz or something.  How about the monkey?  Action brackets 
tightened? Even the keybed tightened.

After that, I'm clueless! ;>)

Paul




Gregor _ <karlkaputt at hotmail.com> 
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05/12/2009 07:55 AM
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[pianotech] lubricating damper springs?






List,

I have a problem with annoying sounds when depressing the right pedal of 
an upright very slowly. It turned out that it comes from the dampers or 
the rod that lifts the dampers. Usualy I fix it with lubricating the 
springs and the rod and the hinge-joints of the rod. But in this case it 
did not help. The spings are not embedded in felt or leather but in 
graphitated wood. I used stag fat for the dampers and the rod, which 
usualy helps allways (for the hinge-joints I used Protec CLP). Was that a 
mistake instead of using graphit for the spring embedding? I mean, if new 
graphit were the only way to solve such a problem, then a future 
application of graphit could be hindered by the fat on the springs. But I 
am not shure about that.

Any ideas about the source of these sounds and the solution of that 
problem? It´s an Ibach C upright from 1986 with a Renner action. It seems 
that the bass dampers are the main culprits.

Gregor

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