[pianotech] how do you pin

A440A at aol.com A440A at aol.com
Wed Apr 22 12:01:32 PDT 2009


Gene writes:

<<  I have always learned to use the swing fit test so each hammer has the 
same number of swings resulting in a graduation of friction at the flange. I 
have also learned that adding friction to the progressively less massive 
hammer assemblies is not a wise thing to do and a constant friction at the 
flange is more important. >>

I swing, have for three decades.  It appeals to my logic that the heavier 
hammers get tighter pinning, since the friction accounts for less of the 
total resistance and the mass is more controlled by tighter pinning. 
     Most of my jobs are pianos that I have lived with for the entire time 
and I haven't found any problems with the pinning.  This includes industrial 
use in practice rooms as well as concert stages and extremely light home 
playing.  
      Rather than "constant" friction, I think it is more important that 
there be a consistancy, which can be had by pinning to the same friction or by 
graduating it by swinging. 
 
Ed Foote RPT 
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html
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