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<DIV><FONT face=Arial size=2>I serviced a 1980s Young Chang 106 cm =
(42") console
today. Lady was complaining about a number of black notes that would not =
play
after you played them once (would not repeat after playing softly). =
I
inspected and sure enough on many of the black notes, when played very
softly/slowly, the jack would not reset back under the hammer =
butt.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Plenty of lost motion. On white notes =
that reset,
some jacks would reset immediately upon starting to release the key =
- the
hammer would stay up near the string and the jack would reset =
immediately - on
other white notes, the jack would reset when the key had fully returned =
(it
would rely on there being some lost motion).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I eased the black keys (some were =
tight) and
weakened the hammer butt springs and that seemed to help - but I could =
still
make a few of the notes not reset if I worked them very =
slowly.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I think most of the problem (besides =
simply being a
1980s YC console) is that the black keys all have a lead forward of the =
center
rail pin - pattern leading. These black keys are very front heavy. Most =
of the
white keys are unleaded (and they repeat just fine). The white keys =
require very
little weight to push the back of the key down - even a console wippen =
could
push them down! The black keys require much more effort to push the back =
of the
key down.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I think if today's efforts do not meet =
her needs,
re-leading is the answer. Piano is not worth a Stanwood approach, but =
maybe
drilling some 1/4" holes in the black note leads or even removing the =
leads will
make the key Front Weight more in line with the naturals.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Anyone have any thoughts on this =
situation or
direct experience solving a similar problem.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks to any and all of you wonderful =
Pianotech
list enthusiasts!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Terry Farrell</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><A
href="http://www.farrellpiano.com">www.farrellpiano.com</A></FONT></DIV=
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