Ovr-Stke vs Undr-Stke (hamm filing question)

[Erwinspiano at aol.com]

HI Julia
  For a light filing, yes, you raise a practical  issue.  There is of course 
a tolerance at which performance won't  suffer  greatly.  It would be great if 
the fix were as simple as   a let--off adjustment but in order to maintain 
proper regulation/ i.e. blow  distance .... hammer line needs to be raised as 
will the drop & let-off  screw.  The magic line changes & the hammers now over 
center more as  well. All the while the touch becoming lighter due to felt loss 
& geometry  changes. It always Strikes me as such a sticky wicket. Don't you  
think? And then there's the scruffing scuffing hammer thing.
  Dale
  

    I  grands, wont a let-off  adjustment compensate for a slight filing. If 
hammers that have had  medium to moderate wear are filed, why not adjust 
let-off? Why replace  the hammers so soon?
 
Julia
Reading, PA  



 
 
Dale  Erwin--Piano Restorations
Modesto, Ca.
Shop 209-577-8397
cell  209-985-0990
Web site _http://www.Erwinspiano.com_ (http://www.erwinspiano.com/)  
Restoration & Sales of
Steinway & Sons plus  other fine pianos.
Custom made soundboards by  design

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