Gabler Stringing scale

[vince mrykalo]

Rex,
  This scale seems problematic to me.  First off, the speaking lengths seem excessive from about note 56 up to 88.  The breaking %ages are above 66% for those notes, in the 80's and 90's for notes 68 to 78!  That is, unless this piano was designed to be tuned to something lower than A-440. . . but that is probably unlikely.  Anyway, recheck those speaking lengths. 
   
  Further, the tension is a little high generally (except for the lower portion of the scale), and the inharmonicity is quite low.  I can't help but think this piano will sound a little funny if you manage not to break strings when bringing it up to pitch.


  
From: "Rex Roseman" <rosemanpiano at netzero.net>
To: "'Pianotech List'" <pianotech at ptg.org>
Date: Sat, 3 Nov 2007 08:08:29 -0400
Subject: Gabler Stringing scale

              Dear list
   
  I am about to order strings for an E. Gabler & Bros. 5’ grand #177086. The question I have is with the string sizes. They look very suspect to me. The following are the wire sizes that I took off of the piano:
   
  8 notes #12 ½ Wire
  14 notes #13 Wire
  4 notes #14 ½ Wire
  6 notes #15 Wire
  6 notes #16 ½ Wire
  8 notes #17 Wire
  6 notes #18 Wire
  4 notes #19 Wire
  4 notes #20 Wire
   
  My request is for some more experienced eyes to look this information over and see if it looks as bizarre to you as it does to me, then to make some suggestions as to how to proceed.
   
  Attached is a more detailed worksheet that I was using to try and figure out if this could (or should) be smoothed out to a more “normal” pattern.
   
  For those who would like more information, read on, otherwise, skip the next section.
   
  The piano was given to me for free a number of years ago and was torn down to be rebuilt and then sat for a number of years. This to say that at that time I was not a reader of this list and had not looked into string scaling. I can’t even remember where I got the figures to create the attached stringing chart. It may have been from my days of harpsichord design. As you can see, I once tried to smooth out the scaling using only my version of tension calculations. I now know that there is much more involved and will need for someone to rescale this piano if that is needed.
   
  The problem that I see is the extended use of the same wire sizes and the pattern of jumping a size and a half at changes. When comparing this to scale samples in “A Guide to Restringing” by John W. Travis, I find nothing that looks anywhere close to what was on this piano.
   
  I don’t think that the piano has been restrung, so these may be the original strings and there may be a good reason for this scaling.
   
  Thank you in advance for your input into this situation.
   
  Rex Roseman
  Roseman Piano Tuning 

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Pianotech list info https://www.moypiano.com/resources/#archives


      Vince Mrykalo RPT MPT
  University of Utah
   
  "Minél több a változás, annál nagyobb az állandoság"
   
  If you agree with me, it's too late.  I've already changed my mind.
   
  www.mrykalopiano.com




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