Old Bosie

Kevin E. Ramsey kevin.e.ramsey@cox.net
Tue, 6 Jan 2004 18:34:27 -0700


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Pitch raising in order from A0 to C88 is more predictable, by about 8%, =
because you know that all the tension on one side of where you're tuning =
is going to be more or less correct, so you don't have to offset for the =
effect of having that tension brought up.=20

Of course, on really drastic cases, like pianos that haven't been =
touched in 15 or 20 years, I would just try to bring each string up to =
pitch on a fully muted piano, and let it drop before I pulled in the =
unisons, just to spread the tension out over the plate. In that case, =
it's two pitch raises, and a tuning, and I see the piano in a month. =
(And charge accordingly.)
Kevin.
  ----- Original Message -----=20
  From: Cy Shuster=20
  To: Pianotech=20
  Sent: Tuesday, January 06, 2004 7:08 AM
  Subject: Re: Old Bosie


  Is there really that much difference in cumulative string tension =
between
  A435 and A440?  (I know, I should do the math...)  I'm aware that A435 =
used
  to be the standard.

  Also, since the treble strings have more tension than the bass, why =
does
  tuning in order from A0 to C88 result in the least overall =
complications
  when doing a pitch raise?  (I read this in the TuneLab documentation).
  Wouldn't you want to make the biggest tension adjustments first, and =
the
  least last?

  --Cy Shuster--
  Rochester, MN


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