[pianotech] Weekend puzzler -- all is revealed

[Tom Driscoll]

That's just what I was gonna say!
Tom D.
  Subject: Re: [pianotech] Weekend puzzler -- all is revealed


   

  So, what was happening was that on those notes where the knuckle leaned toward the hammer and the repetition lever spring adjustment screw was backed all the way out the screw rubbed against the knuckle. Over the years a groove has been worn into the back of knuckles on the notes where this has been happening. On a light blow the drag was not only noticeable but severe enough to make it impossible to play the piano with any consistency. On a hard blow there was enough force and flexing to power the mechanism through.

   

  ddf

   
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