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<BODY lang=EN-US style="tab-interval: .5in" vLink=blue link=blue =
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<DIV><FONT face=Arial size=2>Speaking of hitch pins, does anyone =
know if Baldwin
is still selling the accu-just hitch pins. I have client with a Baldwin =
SD10
with a defective set of accu-just hitch pins which are breaking =
off one at
a time. So far more than a dozen have snapped in the last 6 months.. Del =
had mentioned that Baldwin had a bad run of accu-just
hitch pins in the 70's ( when this piano was made). =
</FONT></DIV>
<DIV><FONT face=Arial size=2>Tom Servinsky</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"><B>From:</B>
<A title=mfarrel2@tampabay.rr.com
href="mailto:mfarrel2@tampabay.rr.com">Farrell</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">Pianotech</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, June 24, 2005 =
7:08 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Hitch Pin Plate
Drilling</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>That's just what I was going to ask =
you - what
kind of pin are you using? For traditional pins, I have used a drill =
bit the
same diameter as the pin and found the fit to be nice and tight. If =
yours are
loose, I would suspect a bent drill bit or somesuch. Are you doing the =
drilling with a drill press with a good chuck? Have you measured =
runout? For
vertical hitches I use stainless steel spring pins. If I remember =
correctly
(it's been a while since I drilled them) you use the same size drill =
bit as
the pin. The pin is slightly expanded and when you pound it in the =
hole, it
will compress a little bit for a very nice snug fit.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>If you are hand drilling, perhaps =
that is your
source for the enlarged holes. I'm sure you could successfull epoxy a =
loose
one in place. I would recommend using West System resin thickened with =
their
<FONT size=3><FONT size=2>#404 High-Density filler - that pin =
won't go
anywhere.</FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>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"> </DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Never =
mind.<SPAN
style="mso-spacerun: yes"> </SPAN><SPAN =
class=GramE>Didn’t read
carefully enough.</SPAN><SPAN style="mso-spacerun: yes"> =
</SPAN><SPAN
style="mso-spacerun: yes"> </SPAN>I see that your drilled the =
same size
as the pin. <SPAN style="mso-spacerun: yes"> </SPAN>Does that =
work
out?<SPAN style="mso-spacerun: yes"> </SPAN>When I’ve =
tried to drill
out for new pins it seems that the hole ends up slightly bigger than =
the
drill size and the pin is often slightly loose.<SPAN
style="mso-spacerun: yes"> </SPAN>How should it be?<SPAN
style="mso-spacerun: yes"> </SPAN>Should one be tapping them =
into a
snug fit or do you worry about stressing the cast iron if they are =
too
tight.<SPAN style="mso-spacerun: yes"> </SPAN>Should they be =
secured
with epoxy?<SPAN style="mso-spacerun: yes"> </SPAN>What’s =
the
approach?</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><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">What type =
of hitch
pin did you use and what drill bit size did you use relative to the =
diameter
of the pin?<o:p></o:p></SPAN></FONT></P><o:p></o:p></SPAN></FONT>
<DIV>
<P><FONT face="Times New Roman" color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; mso-no-proof: yes">David
Love<BR></SPAN></FONT><st1:PersonName><FONT color=navy =
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; mso-no-proof: =
yes">davidlovepianos@comcast.net</SPAN></FONT></st1:PersonName><FONT
color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; mso-no-proof: yes">
</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="MS =
Sans Serif"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"> <o:p></o:p></SPAN></FONT></P>
<DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="MS =
Sans Serif"
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'">Recently
faced the same problem on my first and only vertical hitch pin
conversion. Bass bichord hitch pins alternated fore and aft, =
but still
not enough space to make me feel comfortable picking a new
location. Old pins were reasonable tight, so I left them =
in
place, ground them flush with the top of the plate, and drilled the =
new
holes down through the center of the originals. 3/16 diameter =
(larger
than the originals at .156) and 9/16 deep (considerably deeper than
originals). Thus the top and the bottom of the new hole =
are in
fresh cast iron. Needed the drill press =
because the
original pins were harder than surrounding cast iron - couldn't push =
the
drill in by hand. See photo. New pins will be 3/16 =
x 1",
with 7/16" exposed. If I set the height of the new bass bridge =
cap
correctly, the loops will rest about 1/8 above the plate.
<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="MS =
Sans Serif"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="MS =
Sans Serif"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'">Mike<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="MS =
Sans Serif"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"> <o:p></o:p></SPAN></FONT></P></DIV></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="MS =
Sans Serif"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"> <o:p></o:p></SPAN></FONT></P></DIV>
<BLOCKQUOTE
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: =
medium none; MARGIN-TOP: 5pt; PADDING-LEFT: 4pt; MARGIN-BOTTOM: 5pt; =
PADDING-BOTTOM: 0in; MARGIN-LEFT: 3.75pt; BORDER-LEFT: black 1.5pt =
solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none">
<DIV><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I'm about to drill a =
plate for
vertical hitch pins. On the few plate I've done this to, I've =
always had
enough fore-and-aft room in the hitch pin area to place the new =
hitch pin
at a desirable location, and not be real close to the original =
hitch pin.
Unfortunately, on the plate I need to drill, the hitch pin area is =
relatively narrow and I can't go very far fore or aft with the new =
location. I can only assume that the original steel pin is a lot =
harder
than the cast iron and I must avoid hitting it. Agree? Any general =
advice
on placing the new hitch pins in a situation like this from those =
who have
crossed this bridge (or rather hitch pin area) =
before?</SPAN></FONT><FONT
face="MS Sans Serif" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"><o:p></o:p></SPAN></FONT></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="MS =
Sans Serif"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="MS =
Sans Serif"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"></SPAN></FONT><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: =
Arial">I
could go immediately aft of the originals, but that would put all =
pins in
one line - although the originals held up for 100 years in that =
array.
Should I just do that and not worry about it?</SPAN></FONT><FONT
face="MS Sans Serif" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"><o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="MS =
Sans Serif"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT =
face=Arial
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Terry =
Farrell</SPAN></FONT><FONT face="MS Sans Serif" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'MS Sans =
Serif'"><o:p></o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></DIV></BLOCKQUOT=
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