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<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2>Hello
David,</FONT></SPAN></DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2>If
memory serves he wrote about the use of trigonometry to compute a =
vertical
composite of down bearing pressure in pounds, using the 2 lengths of the =
string,
I remember asking myself why too.</FONT></SPAN></DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2>May
be because it is easy to measure the height towards the capo with a =
thread,
but difficult to measure this way with aggrafes because of the plate =
bars in the
way ?</FONT></SPAN></DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2>I
understand recently that we probably don't have to apply downbearing the =
same
way on a rib crowned soundboard and on a "compression crowned" board, as =
the
last one will do it's best under a light load, while the crowned rib bar =
ask for
the downbearing to give them some more internal =
tension.</FONT></SPAN></DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2>That
makes a big difference in approach I guess.</FONT></SPAN></DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2>A
friend of mine use to fine regulate downbearing pressure with the =
string's rest
height while stringing, checking with the strings at pitch as he
goes.</FONT></SPAN></DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2>Do
some of you apply this method ?</FONT></SPAN></DIV>
<DIV><SPAN class=466565911-02022003></SPAN><SPAN =
class=466565911-02022003><FONT
face=Arial color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2>Any
thoughts about that ?</FONT></SPAN></DIV>
<DIV><SPAN class=466565911-02022003><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=466565911-02022003></SPAN><FONT face=Arial><FONT
color=#0000ff><FONT size=2>B<SPAN
class=466565911-02022003>ests</SPAN></FONT></FONT></FONT></DIV>
<P><FONT size=2>Isaac OLEG<BR><BR>Entretien et réparation de
pianos.<BR><BR>PianoTech<BR>17 rue de Choisy<BR>94400 VITRY sur
SEINE<BR>FRANCE<BR>tel : 033 01 47 18 06 98<BR>fax : 033 01 47 18 06 =
90<BR>cell:
06 60 42 58 77 </FONT></P>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT =
face=Tahoma
size=2>-----Message d'origine-----<BR><B>De :</B>
pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]<B>De la =
part
de</B> David Love<BR><B>Envoyé :</B> samedi 1 =
février 2003
16:34<BR><B>À :</B> Pianotech<BR><B>Objet :</B> Re: =
Downbearing
question<BR><BR></FONT></DIV>
<DIV><FONT face="MS Sans Serif" size=2>June 1988, page 34, right =
hand column,
first paragraph says "...A test string (carpet thread), although =
limited to
the capo bar sections...), and the second paragraph starts: "The =
carpet
thread can't be used where agraffes exist so another approach is
necessary..).</FONT></DIV>
<DIV><FONT face="MS Sans Serif" size=2></FONT> </DIV>
<DIV><FONT face="MS Sans Serif" size=2>This is in reference to =
setting
downbearing by using the deflection angle to calculate the distance =
over the
rear string rests when the string is just touching the bridge =
top.
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="MS Sans Serif" size=2>
<DIV>David Love</DIV>
<DIV><A
=
href="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.n=
et</A></DIV>
<DIV> </DIV></FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid">
<DIV style="FONT: 10pt Arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=davidskolnik@optonline.net
href="mailto:davidskolnik@optonline.net">David Skolnik</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To: </B><A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">Pianotech</A>;<A
title=davidlovepianos@earthlink.net
=
href="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.n=
et</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> 2/1/2003 3:02:56 AM =
</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Downbearing =
question</DIV>
<DIV><BR></DIV><FONT size=2>David -<BR>Can you indicate the issue =
of the
Journal or other source where this article is to be =
found?<BR><BR>David
Skolnik<BR>davidskolnk@optonline.net<BR><BR><BR><BR>At 11:43 PM =
1/31/2003,
you wrote:<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite"><FONT
face="MS Sans Serif, Geneva" size=2>So I'm reviewing my method =
of setting
downbearing and I'm reading this article by Nick Gravagne. =
He says
that although you can use a thread test to set bearing in the capo =
section, it won't work in the agraffe section and I'm wondering =
why.
The answer is not coming immediately to mind. I must be =
overlooking
something obvious. Explanations?
Thanks<BR> <BR> <BR>David Love<BR><A
=
href="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.n=
et</A><BR></FONT></BLOCKQUOTE></FONT></BLOCKQUOTE></BLOCKQUOTE></BODY></H=
TML>