Steinway hammer Bore Angles

[Clark Sprague]

Hi, Dale.  Please do post it, if you can.  Clark
  ----- Original Message ----- 
  From: Erwinspiano at aol.com 
  To: pianotech at ptg.org 
  Sent: Monday, April 10, 2006 1:43 AM
  Subject: Re: Steinway hammer Bore Angles


    Hi Clark
     I have a list with all the original bore specs that came from a stwy source.  There is nothing on it remotely close to this except I believe all bass hammers are 5.5 degrees. The first tenor is probaly 10 degress.  I can look tomorrow if you need to know more than this.
     Dale
    Hello, Listees!  I have a question that I want to ask about the boring angles on Steinway grands.  I have a 1904 short A that does not have the original hammers on it, and the ones that are there have barely any angle (Maybe 2 or 3 Degrees).  The strings are at a 15 degree angle to the stretcher.
        I looked up Newton Hunt's posting of published hammer boring specs in the archives, and the only bass hammer angles for S&S that I saw were 5.5 degrees for an L and B, I think.  I bored a couple samples at 8, 9, and 1 at 10 degrees, and concluded that 8 would work.
        Any thoughts on this?  I looked at a Baldwin R, next to it, and they looked to be about 10.  What do you all use?
    Clark A. Sprague, RPT
    csprague4 at woh.rr.com


  Dale Erwin--Piano Restorations
  4721 Parker Rd.
  Modesto, Calif 95357
  Shop 209-577-8397
  cell 209-985-0990
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