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<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2>Hello,
</FONT></SPAN></DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2>I
guess it is for friction and efficiency reasons, the alignment I =
talk of is
as seen from above (the line between capstan and front pin
emplacement).</FONT></SPAN></DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2>Even
with the bends the balance pin in fact, may be on the line between =
capstan and
front pin, if the placement is optimal.</FONT></SPAN></DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2>I believe that this is the cause for extra friction and =
added wear
if too much out of alignment ( it is found often, particularly on =
cheaper
instruments or little pianos).</FONT></SPAN></DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2>Then,
if a capstan is not centered on the middle of a key, like you state =
(from
left/right side) , I believe it is more due to a problem when the wooden =
panel
was sawed to cut the keys, than a problem with the original =
placement
of the capstan, the capstan holes being located before the key are =
cut from
the plank.</FONT></SPAN></DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2>The
balance holes are drilled before key cutting , and I was said they =
are
drilled at the same time that the balance rail (clamped together) - that =
make
sense for alignment reasons.</FONT></SPAN></DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2>Did
you check the alignment I talk of ?</FONT></SPAN></DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2>Best
Regards.</FONT></SPAN></DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2>Isaac</FONT></SPAN></DIV>
<DIV><SPAN class=637133017-06082004><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT =
face=Tahoma
size=2>-----Message d'origine-----<BR><B>De :</B> Allen Wright
[mailto:awright440@cinci.rr.com]<BR><B>Envoyé :</B> vendredi 6 =
août 2004
17:35<BR><B>À :</B> oleg-i@noos.fr; College and University
Technicians<BR><B>Objet :</B> Re: capstan
spacing<BR><BR></FONT></DIV>Isaac,<BR><BR>But how about the keys that =
have bends
by design (bass and treble)? They certainly don't line
up.<BR><BR>Allen<BR><BR>Allen<BR>On Thursday, August 5, 2004, at 03:41 =
AM, Isaac
OLEG wrote:<BR><BR>
<BLOCKQUOTE><?fontfamily><?param Arial><?color><?param =
0000,0000,FFFF><?smaller>Ask
some design oriented guys more experienced than me, but seem to me =
that the
goal in placing capstan and pins is to align them on a straight line =
(front
pin, balance pin / capstan) while this ideal situation is not always =
possible
=
indeed.<?/smaller><?/color><?/fontfamily><BR> <BR><?fontfamily=
><?param Arial><?color><?param 0000,0000,FFFF><?smaller>Isaac
=
OLEG<?/smaller><?/color><?/fontfamily><BR> <BR> <BR><?fontfamil=
y><?param Tahoma><?smaller>-----Message
d'origine-----<BR><B>De :</B> caut-bounces@ptg.org
[mailto:caut-bounces@ptg.org]<B>De la part de</B> Allen
Wright<BR><B>Envoyé :</B> jeudi 5 août 2004 =
03:28<BR><B>À :</B>
College and University Technicians<BR><B>Objet :</B> Re: capstan
spacing<BR><BR><?/smaller><?/fontfamily>Wim and Vince,<BR><BR>My =
question
would be, what happens to the spacing of the rep to the hammer =
shank/knuckle
after these acrobatics you mention?<BR><BR>I certainly shim the whip =
flange in
order to space the lever to the hammer flange, but I prefer to keep =
the top of
the rep lever as horizontal as much as possible, and not tilt the =
lever off of
90 degrees if I can help it.<BR><BR>But what I'm really getting at is =
this: I
notice quite a few of the capstans I've removed were slightly off =
center of
the keys anyway, and not always in the right direction (making the =
capstan
spacing noticeably off). It just seems to make sense to me to take =
advantage
of the opportunity (while drilling new capstan holes) to see where the =
whip
heels are when all the action parts are properly spaced to the strings =
(particularly in the bass and tenor, where the strings can't be moved) =
and
drill capstans off center purposely in the right =
direction.<BR><BR>Probably
even just some form of eyeballing the relationship of the whip heels =
to the
keys could be used to mark where to drill the capstan holes. I =
wondered though
if anyone has thought about this and perhaps come up with a real =
accurate way
to do it.<BR><BR>I also wonder if there is any reason why slightly =
off-center
capstans could be a bad idea, in terms of geometry or wear. Perhaps =
more wear
on one side of the keybushings? I imagine that would be subtle if =
noticeable
at all.<BR><BR>Any comments will be =
appreciated.<BR><BR>Cheers,<BR><BR>Allen
Wright<BR>Northern Kentucky University<BR>On Wednesday, August 4, =
2004, at
03:28 PM, Wimblees@aol.com wrote:<BR><BR>In a message dated 8/4/04 =
11:15:10 AM
Central Daylight Time, awright440@cinci.rr.com =
writes:<BR><BR>I<BR>noticed
before removing the capstans that quite a few of them =
aren't<BR>centered
perfectly to the whip heels, some being quite noticeably off<BR>to one =
side or
the other. The rep levers are spaced to the hammer<BR>shanks =
accurately (with
the hammers spaced to the strings).<BR><BR><BR>Alan<BR> <BR>You =
can try
to center the cushions over the capstans by tilting the =
wips. You
might need to paper the flange to do that, just like you paper one =
corner of a
hammer flange to move the hammer to the right or lift. (not the same =
as
traveling).<BR> <BR>The other way to center the capstan under the =
wippen
is to move the front of the key. I just did this on an older D.
There were quite a few capstans that were not center =
under the
wippen cushions. So after I tilted the wips as much as I could, I =
moved the
front of the key slightly, and moving some of the keys around them to =
make
sure the keys were still evenly spaced. Also, make sure the keys =
are
level. That can also effect the centering of the
capstan.<BR> <BR>Wim<BR>Willem Blees, RPT<BR>Piano
tuner/technician<BR>School of Music<BR>University of
Alabama<BR><BR></BLOCKQUOTE></BODY></HTML>