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<DIV><FONT face=Arial size=2>David and all,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>In addition, I try to make my "capstan boats'' or
markers the same weight as what I will be using. Otherwise, the usual 5-6 grams
of capstan weight will throw off your FW by 2-3 grams unless you've already
compensated for that. Not clear?</FONT></DIV>
<DIV> </DIV>
<DIV>Jude Reveley, RPT<BR>Absolute Piano Restoration, LLC<BR>Boston,
Massachusetts</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"><B>From:</B>
<A title=davidlovepianos@comcast.net
href="mailto:davidlovepianos@comcast.net">David Love</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">'Pianotech List'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, July 18, 2006 9:51
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: 1890s WNG Action
Geometry</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">If the capstan is too
low then cut a short dowel (the width or less of the key) of the right
diameter to approximate the desired height of the capstan. Lay some
double stick tape on the key stick where the capstan will go so that you can
roll the dowel back and forth and it will stay put. Then position the
dowel where you think it should go on a key with known front weight (say 80 -
85% of maximum for that note) and your likely strike weight given the hammer
set you are using. Move the dowel/capstan around until you achieve the
balance weight you want. Then mark and measure the position using
Stanwood KR system. With the little stand it’s more important that you
position it consistently. I line up the front of the key with the edge
of the 90 degree holder which puts the little roller just behind the
front—about where your finger is likely to be. To mark the capstan
position for drilling I use a jiffy lead trimmed to 10 grams with the screw
hole centered. Lay the lead on the key surface and move it slowly in one
direction in very small increments until the scale just turns over to the
number you are targeting. You will notice that the lead will move a fair
distance without the scale changing so you want to be sure you are at the
point where the number just turns to insure accuracy between keys. Take
a thin transfer punch and insert it down through the hole in the jiffy lead to
mark your capstan drilling position. Mark the beginning and end key of
each section and then scribe a line with a razor blade. Check to see
that your lines are contiguous. Double check and then check it
again. Plugging and redrilling after plugging and redrilling is really a
drag. </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Assuming that you are
using a 17 mm knuckle I would guess that a Stanwood KR of about .51 or .52
would be about right especially considering the capstan is moving away from
the wippen flange which will also contribute to a lower overall ratio.
At least that’s where I would start. It is very likely that .48 KR will
be too low. On a Steinway that KR would normally match up with a 16 mm
knuckle. </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<DIV>
<P><FONT face="Times New Roman" color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy">David Love</SPAN></FONT><FONT color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy"><BR>davidlovepianos@comcast.net<BR>www.davidlovepianos.com</SPAN></FONT><FONT
color=navy><SPAN style="COLOR: navy"> </SPAN></FONT></P></DIV>
<DIV
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<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: windowtext"></SPAN></FONT> </P>
<P class=MsoNormal
style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 0.5in; MARGIN-RIGHT: 0in"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: windowtext">Original message<BR>From: Farrell
<BR><MFARREL2@TAMPABAY.RR.COM>To: "Pianotech List"
<BR><PIANOTECH@PTG.ORG>Received: 7/18/2006 5:03:27 PM<BR>Subject: Re: 1890s
WNG Action Geometry</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: Arial">Yes, 4.9,
Stanwood. Linear measurements suggest 4.8 (man, you're right on target!). I
agree with you - I'm too far forward with the capstan. I'll be trying a
location that simple mathimatical interpolation would suggest to yield about
5.5/Stanwood.</SPAN></FONT></P>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: windowtext"></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: Arial">Let's see - on
one note, the original location was R = 6.24/Stanwood and an 8 mm
move yields R = 4.92/Stanwood. So if I target R = 5.5/Stanwood I
should move the capstan 4.5 mm forward from the original
location.</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: windowtext"></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: Arial">On the
other note, the original location was R = 6.24/Stanwood and
an 11.5 mm move yields R = 4.64/Stanwood. So if I target R =
5.5/Stanwood I should move the capstan 5.3 mm forward from the original
location.</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: windowtext"></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: Arial">So
I guess my next try should be with about a 5 mm move forward from the original
location. And of course, the increase in wippen heel height will be smaller as
I adjust that to have the heel/capstan interface on the magic line at
half-blow.</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: windowtext"></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: Arial">I'll give that
a try on a few notes and fully regulate them - that'll give me something
specific to talk about then. Thanks for your (and all others!)
input.</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: windowtext"></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: Arial">Terry
Farrell</SPAN></FONT></P></DIV>
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<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: Arial">-----
Original Message ----- </SPAN></FONT></P></DIV>
<DIV style="font-color: black">
<P class=MsoNormal style="BACKGROUND: #e4e4e4; MARGIN-LEFT: 0.5in"><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: Arial"><BR> </SPAN></FONT></P></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Is
that a Stanwood 4.9 ratio? If so, I think that’s a bit low and
you might compromise the regulation some. Remember that as you move
the capstan forward on the key you also benefit from the move away from the
flange in the 2<SUP>nd</SUP> class wippen lever. I don’t like to get a
ratio lower than 5.5 (Stanwood) which should allow you a fair amount of
leeway with hammers and front weights to achieve something between 36 and 40
BW. My usual target is 37. If you calculate the ratio via linear
measurements, the number will be bit lower than with Stanwood
measurements. </SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=black size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Otherwise, capstan
movements are pretty common on action I work on. Relocating or
changing the height of wippen heels is not uncommon
either.</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=black size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">David
Love</SPAN></FONT></P></BLOCKQUOTE></DIV></DIV></BLOCKQUOTE></BODY></HTML>