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<DIV><FONT size=4> Wim</FONT></DIV>
<DIV><FONT size=4> I've read your post & I feel your pain =
but whenever I experience unison instability myself I almost always except t=
he fact that a pin or 2 didn't quite get set right. Especially if this =
is a piano I know well. My Dad taught me to use firm blows & I stil=
l do but as I got older I found that my excess pounding was a substitute for=
more accurate pin technique. As someone said overpounding can cause instabi=
lity when coupled with a pin not quite set in equilibrium. </FONT></DIV>
<DIV><FONT size=4> I know there are other factors like the pin=
s leaning against the plate, temp & humidity but the tunings of the=
best tuners I know all exhibit a clean unisons that stay trademark &am=
p; a wounded pride when instability shows up during a concert. </FONT><=
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<DIV><FONT size=4> Dale</FONT></DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue =
2px solid">
<DIV><FONT face=Arial size=2>OK, what exactly is happening when a string=
goes out of tune. I know about climatic changes that effect the soundboard.=
This causes the who piano, or at least whole sections to go out of tune. I =
can accept that. But I pride myself on setting the string and the pin. I am =
a pounder. On new pianos, (at least new to me), and especially concert instr=
uments. I beat the daylights out the notes to get them to stabilize. But the=
re are still strings that go out. That is why we tune concert instruments nu=
merous times, with strings still going out. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I tune a D for a church once a month. I pou=
nd until my fingers hurt but I leave the string with the lights standin=
g absolutely still. But every time I tune it, the piano is "in tune" in that=
it hasn't changed pitch over all, but there are at least 2 dozen strings th=
at have "slipped." They are 2 or 3 cents off. I'm not talking notes, I am ta=
lking string. The right string of one note is 3 cents low, or the left strin=
g of another note is 2 cents flat. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Why is that? Why do just these strings go o=
ut, and not the other ones? Am I still not pounding hard enough, or is the c=
ombination of slight variations in temperature, combined with strings that m=
aybe weren't set right, causing this? Inquiring minds want to know.</FONT></=
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<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wim</FONT></DIV>
<DIV><FONT lang=0 face=Arial size=2 FAMILY="SANSSERIF" PTSIZE="10"=
>Willem Blees, RPT<BR>Piano Technician<BR>School of Music<BR>University of <=
/FONT></DIV></BLOCKQUOTE></DIV>
<DIV></DIV>
<DIV> </DIV>
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<DIV><FONT lang=0 face=Arial size=2 FAMILY="SANSSERIF" PTSIZE="10"=
>Erwins Pianos Restorations <BR>4721 Parker Rd.<BR>Modesto, Ca 95357<BR>209-=
577-8397<BR>Rebuilt Steinway , Mason &Hamlin Sales<BR>www.Erwinspiano.co=
m</FONT></DIV></BODY></HTML>