[CAUT] Wandering Hammers

[Jeff Tanner]

I was thinking a lock washer or some call it a spring washer ought to fix the problem. A simple flat washer does nothing to compensate when the wood shrinks. I ran into the same problem with the last Steinway hammer shank replacement I did. The new flanges were noticeably thinner than the originals and despite the extra effort to make sure the screw tightened down on the flange, it was loose in no time, and several hours of burning and spacing were out the window. A lock washer was the fix.
Tanner
  ----- Original Message ----- 
  From: Don Mannino 
  To: caut at ptg.org 
  Sent: Friday, July 10, 2009 11:11 AM
  Subject: Re: [CAUT] Wandering Hammers


  Denis,

  Between Jon Page and Marcel Carey I believe you will find the best answer.  Either the screws are bottoming, or the hammer rail is not flat on top.  Another washer will fix the screw problem, and using two narrow strips of paper on the rail instead of one big one will correct for any bulging of the wood rail.

  Don Mannino



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  From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of denisikeler at aol.com
  Sent: Friday, July 10, 2009 4:57 AM
  To: caut at ptg.org
  Subject: [CAUT] Wandering Hammers


  List,

  At the Flint School Of Performing Arts, I have a Baldwin SD that the hammer spacing will not stay put.  About 7 years ago I put hammers shanks and flanges in it.  I used Renner USA shanks and flanges.  The problem is, no matter how hard you tighten the flange screw, the hammers eventually move left or right after a few hours of heavy playing.  

  Some of my Ideas are:

  1. replace the sandpaper on the rest rail with a heavier grit, which might necessitate a slight let off and drop adjustment.
  2. the flanges have that little "notch" in the back, so I thought installing bridge pins through the notch right into the rest rail.
      I used to have a 9' Bechstein that I took care of that had the same.
  3. remove a small amount of wood under the flange, so that tightening the screw would transfer some of the grip out to each end of the flange.  My least favorite option.

  Any of you ever had this problem?  Any help is appreciated.

  Denis Ikeler



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