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<DIV>Anyone willing/able to state the ABCs of logarithmic and/or
semi-logarithmic piano string scaling? What kind of scaling is Ron N, =
and Del
using? I'm remember the difference between graphing on log-log paper and =
semi-log paper, but fail to envision how this specifically relates to =
piano
string scaling. Is it always one way or the other - or can one design a =
log-log
string scale OR a semi-log scale? Exactly what factor(s) make the =
logarithmic
progression(s)? Which make linear progression(s)? I know sometimes =
in Del's
scale designs, he will have the long bridge (some factor of =
it) follow the
semi-logarithmic progression (or is it logarithmic?), but then he will =
abandon
that on the bass bridge - I think because of physical limitations of the =
soundboard/plate, etc. - what's that all about? What are some of the
ramifications of all that?</DIV>
<DIV> </DIV>
<DIV>If many manufacturers don't follow a log or semi-log progression on =
their
long bridges, what do they follow? (Watch out, there may be some worms =
in that
can!)</DIV>
<DIV> </DIV>
<DIV>I have to admit, I know very little about piano string scaling. Can =
anyone
recommend some reading that would help with these types of =
questions?</DIV>
<DIV> </DIV>
<DIV>Thanks.</DIV>
<DIV> </DIV>
<DIV>Terry Farrell</DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"> </DIV><FONT
id=role_document face=Arial color=#000000 size=2>
<DIV>I had the rare occasion to step into my ex's house last night as =
I was
picking up my son. She has a Schiedmayer 180 that seldom =
gets
played.</DIV>
<DIV> </DIV>
<DIV>I reported on this piano a couple of years ago, after it had =
rested in
it's current location for a couple of years. At that time, after =
a move
of 150 miles from a dry climate to a more humid one, it had held pitch =
and
tune remarkably well, despite not having been tuned for two years or =
so.</DIV>
<DIV> </DIV>
<DIV>Two years later, same thing. All the As from 2 to 5 are =
within 2
cents of correct pitch. 6 and 7 are slightly sharp, 0 and 1 =
slightly
flat. The tuning--well, it isn't horrible. The unisons are =
holding
surprisingly well, in fact. </DIV>
<DIV> </DIV>
<DIV>Last time I posted on this, Ron O. commented that the =
stability
was due in large part to the logarithmic bridge. Being =
clueless in
this department, I'm curious how this would make a =
difference.
</DIV>
<DIV> </DIV>
<DIV>I didn't have time or nerve to delve into parts removal, but I =
was
wondering whether the pinblocks are configured differently than Kawai =
grands.
</DIV>
<DIV> </DIV>
<DIV><FONT lang=0 face=Arial size=2 PTSIZE="10" =
FAMILY="SANSSERIF">Dave
Stahl</FONT></DIV></BLOCKQUOTE></FONT></BODY></HTML>