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<DIV><FONT face=Arial size=2> David, that's good. =
I find that
the bass needs about 20% overpull. When the machine finishes it's =
calculation it
comes on at AO, right? I go up an octave to A1, look at the cents =
deviation, and
measure how flat it is. Then I go to A2, which on most pianos is still =
on the
bass bridge, and I measure how flat that note is. Then I do a quick =
calculation
in my head to get the average cent value. Twenty percent is an easy =
figure to
calculate. Say it's 32 cents flat; double that for a value of 64. Move =
the
decimal point over one place and you have 6.4, which is twenty percent =
of 32. I
adjust the machine to be 6.4 cents sharp, tune all the single strings =
and the
non-muted bi-chords, pull out the strip and tune the unisons, and the =
bass will
be dead on after the rest of the pitch raise process. (Of course, I =
always go
through it a second time on the final pass, sheesh, I'm not a hack, =
after all.)
</FONT></DIV>
<DIV><FONT face=Arial size=2> Think about it, you =
might try
it. Beats having the lights drift by an equal amount, but I know you've =
got your
system too, and I respect that. This whole post was directly at the =
person who
originally posted the question anyway. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>Kevin E. Ramsey<BR><A
href="mailto:ramsey@extremezone.com">ramsey@extremezone.com</A></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=davidlovepianos@earthlink.net
href="mailto:davidlovepianos@earthlink.net">David Love</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, June 24, 2002 =
9:39 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Pitch Raise =
Questions</DIV>
<DIV><BR></DIV>
<DIV><FONT face=arial,helvetica><FONT size=2>Anything over 4 cents =
will
require a second tuning. I found with the SAT III (when I was =
using it)
that the pitch raise function needs to be modified slightly to =
accomodate
different areas of the piano. The standard pitch raise function
overpulls by about 25% (if I recall). The bass and low tenor =
need only
about 15% overpull and the upper treble needs about 30-35%, tapering =
off at
the very top. So when using the overpull function on the SAT =
III, let
the lights rotate left slightly at the lower end of the piano, stop =
them in
the middle, and let them rotate slightly right at the upper end. =
You
will end up much closer to your goal. Tune unisons as you
go.</FONT></FONT></DIV>
<DIV><FONT face=arial,helvetica><FONT =
size=2></FONT></FONT> </DIV>
<DIV><FONT face=arial,helvetica><FONT size=2>David
Love</DIV></FONT></FONT></BLOCKQUOTE></BODY></HTML>