Pitch Raises ... Multiple Passes?

[Farrell]

Hello Kevin. I was raising the pitch of a massive high performance Winter spinet yesterday a full half-step. And I was thinking that it would go faster if I were to strip mute the piano, PR just the middle strings, then go back a do the unisons. Do you do that in the plain wire sections? How do you find that approach affects your overpull percentage needed? Thanks.

Terry Farrell
  
----- Original Message ----- 
From: "Kevin E. Ramsey" <ramsey@extremezone.com>
To: <pianotech@ptg.org>
Sent: Wednesday, August 21, 2002 11:30 PM
Subject: Re: Pitch Raises ... Multiple Passes?


Joe, glad it works for you, however, I find that the bass requires a twenty percent over-pull. Perhaps our methods differ; during a pitch raise, I tune the single bass strings and one string of each bi-chord first, then I pull out the strip and tune unisons by ear.  I'm also tuning the bass first, ala Sanderson. When I do a pitch raise, I do it with a SAT (Gets you real close, real fast), so I do the bass first. I can understand the 10% overpull thing only if I've already brought the rest of the piano up first. 
    Please clarify.
  ----- Original Message ----- 
  From: Joe And Penny Goss 
  To: pianotech@ptg.org 
  Sent: Wednesday, August 21, 2002 7:46 PM
  Subject: Re: Pitch Raises ... Multiple Passes?


  Kevin,
  If the bass is about 30 cents flat I want to raise the note about three cents sharp ( about 10% ) of pitch. So with a SATlll that raises the pitch 25%  that would result in too much over pull for me so I will set the over pull for 12 cents and roll the program into the machine.
  I take only one measurement at A2 to arrive at my over pull. Works very well for me.
  I use the 25% in the tenor and about C4 the 30% to the top then retune.
  On pianos 25% or less flat or sharp I use the Verituner 100 and its 10% bass, 30% tenor,
  and 36% treble and retune.
  Joe Goss
  imatunr@srvinet.com
  www.mothergoosetools.com
    ----- Original Message ----- 
    From: Kevin E. Ramsey 
    To: pianotech@ptg.org 
    Sent: Wednesday, August 21, 2002 7:40 PM
    Subject: Re: Pitch Raises ... Multiple Passes?


    >
    >     All wound strings: 1/5 (Example: You test 10 notes, or so, and find
    them
    > about 30 cents flat. You would set your ETD to +6 cents sharp and tune
    those
    > strings to that setting.)


        Here's another little brain saver:  What if you're pitch raising a piano and want to do a 20% overpull in the bass, and it's, say, 28 cent's flat. (let's see, one fifth of twenty eight would be ......... ah........ ah........)  

        Take 28, and double it for 56. Move the decimal point over to the left one place. 

         5.6 is 1/20th of 28. 

        At least, that's how I do it.