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<DIV><FONT size=3>I have a question that I suspect maybe only Del or =
Ron N or
Ron O might be able to answer. </FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3>In Del's class on small piano design, he has talked =
about
characteristics of soundboard design that will greatly influence the =
tendency
for a piano to exhibit false beats. I forget what that explanation was. =
It may
be related to stiffness, maybe impedance - something like if the =
impedance of
the board is greater/lesser than the note frequency in that area of =
the
soundboard the piano will/won't be prone to false beats. </FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3>The bottom line was that if the soundboard is poorly =
designed
in this respect, almost any defect in wire or terminations or whatever =
will
cause false beats. However, if the soundboard is properly designed in =
this
regard, even a loose bridge pin or a kink in the wire will likely not =
produce a
false beat.</FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3>What is it about soundboard design that influences =
the
tendency for the piano to develop false beats? Ron? Ron? Del? Anyone
else?</FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3>Terry Farrell</FONT></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"><FONT
id=role_document face=Arial color=#000000 size=2><FONT =
size=3> I
have waited for this subject to come up again because I believe there =
is a
cause that I've not seen addressed & fits into what your =
experience has
born out. While I believe a tight solid pin, proper down =
bearing
& bridge angle are absolutely needed for good string =
mechanics there
are conditions where all the right conditions for pure strings exists =
but the
wires are as false as Dollie Partons ........wigs. Grin. </FONT></DIV>
<DIV>
<DIV><FONT size=3> I believe that a large =
part of
string falseness is caused or created in the stringing process in 2 =
ways.
</FONT></DIV>
<DIV><FONT size=3> 1st, the string having a =
natural coil
& memory should be installed by allowing it to freely wrap around =
the
hitch pin in the natural bend or or coiled condition in which it takes =
as it
comes off the coil. Or so as its' not bent back against itself. I =
believe this
keeps the wire from excessive twisting as it is pulled to pitch. =
</FONT></DIV>
<DIV><FONT size=3> Now if your not buying that one =
then here
is the no.2 reason is ,& I am absoultely convinced of
this. </FONT></DIV>
<DIV><FONT size=3> I believe over pulling =
the string
too far above pitch in the stringing process deforms the string. =
Its'
that simple.</FONT></DIV>
<DIV><FONT size=3> We once had a stringer who was very good =
but we had
many false beats. One day in conversation about this I =
asked if
there was anything she could be doing to create this & she said =
no.
She said I always pull the strings a half step sharp of there intended =
final
pitch as a I string just like you told me. </FONT></DIV>
<DIV><FONT size=3> I said ^%$##!#$&*(*_) =
Slight
communications flop. I had told her to pull the strings only up to =
pitch as
she went. SO after that the false beat issues were greatly
reduced. Also we swicthed to the Mapes Gold wire & I feel it =
produces even less falseness than the Roslau wire.</FONT></DIV>
<DIV><FONT size=3> My 2 cents worth for what its' =
worth</FONT></DIV>
<DIV><FONT size=3> Dale Erwin</FONT></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px =
solid"><FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 =
size=2>Because for an explanation or theory to have any meaning, =
it has to
be <BR>consequent in dealing with the phenonema it attempts to =
explain.
There <BR>are too many cases where this particular theory doesnt =
hold
up. You can <BR>tighten a loose pin without solving the =
problem, you
can experience a <BR>clean string with absurdly loose pins. =
The
<<sometimes>> effect of <BR>tightening a loose pin or =
putting
pressure on it points (at least me) in <BR>another =
direction.<BR><BR>If the
tight pin theory is really valid, then in nearly all cases... if =
<BR>not
all... a false beat will occur when a pin is loose and it will =
be
<BR>eliminated upon tightening the pin. Since this is quite clearly, =
for not
<BR>to say obviously not true... then the theory has a major
problem.<BR><BR>There is no doubt something that changes sometimes =
when
manipulating the <BR>pin/pin hole relationship in various =
fashions.
But it I dont think its <BR>even close to been really shown that its =
simply
a matter of the pin <BR>being loose. Not by a long
shot.<BR><BR>Cheers<BR>RicB</FONT></BLOCKQUOTE></DIV>
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