post pitch-raise creep?

[Farrell]

Well gosh, 40% overpull on a 25-cent pitch raise is only ten cents! Geeeesssshhhhh!   ;-)

Terry Farrell
  ----- Original Message ----- 

  In all my years of doing this, I've never run into a piano where the monochords needed that much of an overpull! I, too, would be afraid to do that! IMO, it isn't necessary. 

  I don't even use the PR function on the SAT for the bass strings. I start with #1 and just pull them a little sharp and go! They usually come out pretty close. 

  Avery Todd
  University of Houston

  At 09:46 AM 7/8/2006, you wrote:

    I've been chicken to try that big an overpull percent on the monochords, for fear of breaking them.

    In the TuneLab Pro documentation, Robert Scott recommends 12% for the bass bridge and 30% elsewhere, for small to moderate pitch raises.  For better results (tuning unisons as you go, bass to treble):

           bass bridge            12%
           tenor bridge to G5   29%
           G5 to G6                29% increasing to 37%
           G6 to C8                37% decreasing to 14%  (tension gets high up there)

    TuneLab's ability to measure each string and calculate a precise, individual overpull percentage in realtime is one of its best features, I think.

    --Cy--
    shusterpiano.com

    ----- Original Message ----- From: "Farrell" <mfarrel2 at tampabay.rr.com>
    To: "Pianotech List" <pianotech at ptg.org>
    Sent: Saturday, July 08, 2006 3:38 AM
    Subject: Re: post pitch-raise creep?



      I use a VT also Andrew, and I find that the upper end of your percent ranges work for me in the tenor and treble. However, I find that the bicord bass needs closer to 25% and for whatever reason - I certainly don't understand it - the monocord bass needs about 40%. I know, I've never heard of anyone using that much overpull in the low bass, but for whatever reason, if I don't, it'll come out flat. Strange.

      Terry Farrell
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