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<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2>Wim,</FONT></SPAN></DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2>I
remember you asked about the rep, springs, if you lightly massage the =
spring
after tensioning them, you stabilize them, so they stay with the =
same
strongness. You massage lightly the underside of the spring, that helps =
too to
fine tune its response.</FONT></SPAN></DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2>That
how it is done. The springs don't need to be too strong, but they may =
respond
well, the shape of their curve play a role in that.</FONT></SPAN></DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2>To
have a spring stronger, you can bend it, but if you pull straight on the =
extremity of the string with your hook you will stiffen the coils more =
durably
(and faster) . The hook part of the spring tend to deform while doing =
it, so I
turn my tool so the spring disengage from the tool before its too much
deformed.</FONT></SPAN></DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2>You
will see that on some pianos someone have done that yet in the factory, =
and the
hooked extremity of the spring is yet opened.</FONT></SPAN></DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2>I was
shown recently how to un bend the springs if someone put a kink in =
it, that
is why the "S" shape of the Yamaha spring tool is so efficient, you can
straighten a kink with it (not with the Hart tool)/</FONT></SPAN></DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2>Best.</FONT></SPAN></DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2>Regards.</FONT></SPAN></DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=890572114-16102002><FONT face=Arial color=#0000ff =
size=2>Isaac
OLEG</FONT></SPAN></DIV>
<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> =
caut-bounces@ptg.org
[mailto:caut-bounces@ptg.org]<B>De la part de</B> Isaac
OLEG<BR><B>Envoyé :</B> mercredi 16 octobre 2002 =
15:12<BR><B>À :</B>
College and University Technicians<BR><B>Objet :</B> RE: bobble
heads<BR><BR></FONT></DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2>Hello,</FONT></SPAN></DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2>Possibly because of the new knuckle position the jack is not =
clearing
it or is locked in the little cushion in the lever =
window.</FONT></SPAN></DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff size=2>Bad
action stack may be , check by lifting one side of the keyboard and =
see if the
action warps a lot or if the drop screws are not =
aligned.</FONT></SPAN></DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2>Warped action stack and bad frame bedding could well =
add to the
thing</FONT></SPAN></DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2>Hammer tail too short, backchecks angle , and so on .... too =
much dip
</FONT></SPAN></DIV>
<DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2></FONT></SPAN></DIV><SPAN class=192235812-16102002><FONT =
face=Arial
color=#0000ff size=2></FONT></SPAN></DIV>
<DIV><SPAN class=192235812-16102002><FONT face=Arial =
color=#0000ff
size=2>Isaac OLEG</FONT></SPAN></DIV>
<DIV><SPAN class=192235812-16102002></SPAN> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT =
face=Tahoma
size=2>-----Message d'origine-----<BR><B>De :</B> =
caut-bounces@ptg.org
[mailto:caut-bounces@ptg.org]<B>De la part de</B>
Wimblees@aol.com<BR><B>Envoyé :</B> mercredi 16 octobre =
2002
00:47<BR><B>À :</B> Pianotech@PTG.org;
caut@ptg.org<BR><B>Objet :</B> bobble =
heads<BR><BR></FONT></DIV><FONT
face=arial,helvetica><FONT lang=0 face=Arial size=2
FAMILY="SANSSERIF">Problem: Bobbling hammers on a S&S M from =
C5 on down.
I mean, they don't even check on a hard blow. Some of them are =
checking, but only on a hard blow. The rest just bobble. New =
hammers, shanks
and flanges. <BR><BR>Let off is right, drop is right, there is after =
touch.
I changed let off, I changed drop. Keys are level, right =
amount of
dip. I increased dip, decreased dip. I've increased rep =
spring, and
decreased rep spring. Dampers are not in the way. Nothing. =
<BR><BR>This is a
1939 model. There has been some discussion about knuckle size. =
As I
said, these are relatively, (about 3 years old) new h/s/f/ , with =
3/8"
knuckles. Could that have an effect?<BR><BR>Wim
</FONT></FONT></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>