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<DIV><FONT face=Arial size=2>Thanks Terry,</FONT></DIV>
<DIV><FONT face=Arial size=2>Curious what the single hole in the middle of all
of your templates is for?</FONT></DIV>
<DIV><FONT face=Arial size=2>Gene</FONT></DIV>
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<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 List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, September 23, 2007 6:04
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: bridge pin layout offset
revisited</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial>Hi Gene,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>You can also control the string angles across the
bridge be varying the distance between the bridge pin rows.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial><EM>"Does anyone put new bridge pins exactly on the
location mark without an offset - depending only on the pin diameter, pin
angle, front to rear pin spacing and wire diameter for the string
angle/offset across the bridge?"</EM></FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Yes.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Setting new bridge pin location arrays also will allow
you to even-out string spacing. Going to vertical hitches are a plus in that
process.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>But original bridge? Not rescaling to allow new speaking
lengths?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><IMG alt="" hspace=0
src="cid:001801c7fe53$88ebe490$2ad28304@DB0Q5F61" align=baseline
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<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial>Terry Farrell</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV><FONT face=Arial size=2>Thinking about bridge pin lay out here and have
questions.</FONT></DIV>
<DIV><FONT face=Arial size=2>Have a new board with recapped bridges made of
laminated maple - planed to bearing hight and ready for new bridge pins to
be located.</FONT></DIV>
<DIV><FONT face=Arial size=2>It is very tempting to use the old bridge cap
for the new pin layout but will not take this approach.</FONT></DIV>
<DIV><FONT face=Arial size=2>I have been in shop and class where I was shown
how to use clear Plexiglas templates to offset the pin from the pin
location/string line to get consistent string angles across the
bridges. Researched the archives to get some numbers and a formula to
make this work. (Thank you Ron Nossman) I must now put this information
into my new bridge.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have also read in Wolfenden's book and could
find no reference to offsetting the pin from the string line/position in any
way that was used in his designs. If this was not done on pianos of his era
you would think that the changing string angles would be noticeable on
different parts of the bridges? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Does everyone use some sort of offsetting
formula for locating new bridge pins? Does anyone put new bridge pins
exactly on the location mark without an offset - depending only on the pin
diameter, pin angle, front to rear pin spacing and wire
diameter for the string angle/offset across the bridge?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wolfenden also mentions the need to slightly
widen the longer strings at the bridge pins so that the longer
strings do not touch when vibrating. Is this just a spacing issue and
widening is whatever you can get away with or is there some way to figure
how to do this? I had always thought that the hitch pin diameter determined
the bridge pin spacing but not necessarily in the bass? Widening would
seem to alter a calculated offset?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks for any of your thoughts.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Gene Nelson</FONT></DIV>
<DIV><FONT face=Arial
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