<HTML><FONT FACE=arial,helvetica><FONT SIZE=3 FAMILY="SERIF" FACE="Times New Roman Greek" LANG="0">In a message dated 3/22/2002 10:39:01 PM Pacific Standard Time, hufford1@airmail.net writes:<BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:<B>Re: Sohmer </B><BR>
Date:3/22/2002 10:39:01 PM Pacific Standard Time<BR>
From:<A HREF="mailto:hufford1@airmail.net">hufford1@airmail.net</A><BR>
Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A><BR>
To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A><BR>
<I>Sent from the Internet </I><BR>
<BR>
Robin</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0"></BLOCKQUOTE><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SERIF" FACE="Times New Roman Greek" LANG="0"> Eventually when you see the piano again this would be a question worth having the answer to yes? I'll check the date of the one I worked on and get back to you if memory serves (yeah right) probably it's in the 1930 as well'<BR>
>>>>>>>>>>>>>>>Dale >>>>>>>>>>>></FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"><BR>
Dale,<BR>
I looked again at this piano today. The strings cross over, of<BR>
course, the board and reach the agraffe which they pass through, THEN,<BR>
the string proceeds upward at an angle of, approximately, about 5 - 6<BR>
degrees for about 1/4 to 3/8 inch and then turns over a round to the top<BR>
of the bridge which is about 5/8 of an inch across. As it passes across<BR>
the top of the bridge it rises at an angle of less than 1 degree. After<BR>
leaving the bridge the angle reverses and it inclines at about 1 degree<BR>
(I am not sure as I write this from memory some twelve hours later)<BR>
downward to the string rest and hitch pin.<BR>
With a little trig this could be calculated but I am reasonably<BR>
sure that a force couple exists here which has the effect of rotating<BR>
the bridge backward thus the shearing stess in the board which, I think,<BR>
the crack is evidence of. Also, in point of fact, it is about two<BR>
inches or so from the bridge. As I repaired the crack over a year ago<BR>
and sent the piano to a refinished for some months I must rely on memory<BR>
for its characteristics but I think the side closest to the bridge was<BR>
the high side. In fact, I feel reasonably certain this was the case<BR>
but, again, I am relying on a very unreliable item, my memory.<BR>
Incidentally, this piano, which is from about 1930, does not have<BR>
the agraffe system in the top section or the bass. Conventional pining<BR>
is used instead.<BR>
Regards, Robin Hufford<BR>
<BR>
Erwinspiano@AOL.COM wrote:<BR>
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