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<DIV>Yes, these have the dreaded graphite on them. I can't see any
scoring, but my eyes aren't what they once were and I don't have a microscope at
the shop.</DIV>
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<DIV>dave<BR><FONT face=Arial size=2>*********** REPLY SEPARATOR
***********<BR><BR>On 6/14/02 at 5:23 PM Baldwin Yamaha Piano Centre
wrote:</FONT></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid"><BR>Hi
Dave,<BR>
Something that tight has quite a lot of friction, friction generates
heat, heat on metal causes expansion. Does this set of shanks have
graphited bushing cloth? Examine the pins carefully for score lines.<BR>Just a
random thought.<BR>Roger<BR><BR>At 05:47 PM 6/14/02 -0500, you wrote:<BR>
<BLOCKQUOTE class=cite cite="" type="cite">OK all you engineer types.
I was repining some hammer flanges today on a Steinway that has been in a
practice room. Action parts are Renner. It gets hard play 14+
hours a day. The action was rebuilt 4 years ago. Nearly all of
the bushings were quite tight -- most 1 or 2 swings. A few had 3
swings and I was pinning for 4 so since the action had been in the shop
(idle) for a couple of weeks, I thought maybe I could just vigorously work
the shank a few seconds and it would swing 4. I'd hold the flange and
make the hammer swing back and forth fairly forcefully for 5 or 6 seconds
and then test it again. In each case the ones that previously would
give 3 good swings, now only gave 1. The hammer dropped from
horizontal to vertical and stopped dead. <BR> <BR>What made the
bushings get tighter by simply working the flange? I'm
stumped!<BR> <BR>dave<BR><BR><PRE>_____________________________
David M. Porritt
dporritt@mail.smu.edu
Meadows School of the Arts
Southern Methodist University
Dallas, TX 75275
_____________________________</PRE><FONT
face="Courier New, Courier"></BLOCKQUOTE><X-SIGSEP>
<P></X-SIGSEP>Roger</FONT><FONT size=2
Arial></P></BLOCKQUOTE></FONT></BODY></HTML>
<PRE>
_____________________________
David M. Porritt
dporritt@mail.smu.edu
Meadows School of the Arts
Southern Methodist University
Dallas, TX 75275
_____________________________</PRE>