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<DIV><SPAN class=265294222-20122005><FONT face=Arial color=#0000ff =
size=2>That
raises an interesting diversionary question. What's the amount of
tension per cent? How many cents of change, over the entire piano, =
would
create a ton of tension change?</FONT></SPAN></DIV>
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size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=265294222-20122005><FONT face=Arial color=#0000ff =
size=2>--
Geoff</FONT></SPAN></DIV>
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<DIV class=OutlookMessageHeader lang=en-us dir=ltr =
align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B>
pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <B>On =
Behalf Of
</B>Cy Shuster<BR><B>Sent:</B> Tuesday, December 20, 2005 2:24
PM<BR><B>To:</B> Pianotech<BR><B>Subject:</B> Re: How to explain a =
pitch
adjustment<BR><BR></FONT></DIV>
<DIV><FONT size=2>I measure pitch on all the A's before I start, and =
record
this for the customer on a graph on the invoice. This gives them =
a great
visual about what work is needed. The graph indicates "fine =
tuning"
range (+/1 eight cents for me).</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>The analogy I use is sanding: if wood is very =
rough, you
can't start with the 1000-grit paper; multiple passes are =
required. Same
thing for painting: with regular maintenance, one coat covers, =
otherwise you
may need several.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>A description of the forces involved helps: 15 to =
20 tons of
tension overall; a pitch raise can add a ton of tension (right?), yet =
a fine
tuning requires < 1% accuracy. No wonder it doesn't
last!</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>--Cy--</FONT></DIV>
<DIV> </DIV>
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