Pitch Raises ... Multiple Passes?

[Kevin E. Ramsey]

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Terry, that's a good question. Most of the time when I see something =
like your high performance Winter that's that flat, I figure it would be =
safer to do two pitch raises. I feel better spreading that much tension =
out over the whole instrument rather than loading up one section tuning =
from bass to treble. I always strip mute no matter what I'm doing, it =
just seems easier to pull it out than to move mutes constantly.=20
    If you were to try pitch raising one of these things that much and =
hit it right on the money in one pass, I don't think you'd have much =
luck because the different sections of the piano are going to react =
differently depending on the thickness of the plate and stiffness of the =
soundboard, and other intangibles. You could certainly get it pretty =
close though.=20
    I would strip it off and do two really quick pitch raises, the first =
just slightly higher than in tune, pull in the unisons, and then do an =
equally quick regular pitch raise, then fine tune. I don't like =
replacing strings in spinets too much myself. I remember trying to do it =
the way you mentioned a few times when I was starting out, carefully =
recalculating the single wire flatness for a 33% overpull as I went up. =
I pulled in the unisons, and it was close enough to get there in a =
second pass, but it was more work than it was worth, I thought.=20
  ----- Original Message -----=20
  From: Farrell=20
  To: pianotech@ptg.org=20
  Sent: Thursday, August 22, 2002 5:18 AM
  Subject: Re: Pitch Raises ... Multiple Passes?


  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
   =20
  ----- Original Message -----=20
  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.=20
      Please clarify.
    ----- Original Message -----=20
    From: Joe And Penny Goss=20
    To: pianotech@ptg.org=20
    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 -----=20
      From: Kevin E. Ramsey=20
      To: pianotech@ptg.org=20
      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........) =20

          Take 28, and double it for 56. Move the decimal point over to =
the left one place.=20

           5.6 is 1/20th of 28.=20

          At least, that's how I do it.=20


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