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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@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, April 02, 2003 =
3:06
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Slow Console =
Action</DIV>
<DIV><BR></DIV>
<DIV>Not really slow, but rather when you lift your finger up off a =
key
slowly, the jack will not slide under the hammer butt. I believe this =
to be a
somewhat common problem on these little pianos. This one is a 1960ish =
Kohler
& Campbell console. Clearly, the key is front weighted enough that =
the
wippen is not able to return the key to resting position fully and =
thus let
the jack slip under the butt. I lubed the action liberally with Protek =
and
eased all the keys - got everything as loose as I reasonably could - =
the jacks
still get stuck when lifting off the note slowly.<BR><BR>I suppose the =
jack
springs could be a bit on the weak side. On a well designed and =
manufactured
vertical piano in good condition, should the weight of the wippen be
sufficient to push the rear of the key down to rest on the backrail =
felt? I
should think so.<BR><BR>Have I missed anything? Any =
recommendations?<BR>
<BR>Terry
=
Farrell<BR>_______________________________________________<BR>pianotech =
list
info: <A
=
href="https://www.moypiano.com/resources/#archives">http://www.ptg.org=
/mailman/listinfo/pianotech</A></DIV>
<DIV> </DIV>
<DIV> There are some verticals that require more =
lost motion
than we normally consider acceptable. This is usually because =
the curve
of the butt leather is not correct to allow the jack to get all the =
way back
under unless the blow distance is set too short, or at least
shortER. I used to run into several brands where I'd say, =
"Oh,
man, there's too much lost motion -- gotta regulate these =
capstans."
Which I would do, then find out I had to turn them all back down =
because the
jacks wouldn't return.</DIV>
<DIV> Reasons keys won't return all the way have =
been
mentioned in other replies -- mainly "cupped" key button bushings =
or
fronts of keys that are too heavy. There are many little pianos =
where
occasionally you have to add a weight right behind the key button just =
to help
the wippen get that key all the way back up. Wood dries, =
absorbs, loses
moisture, weights and friction change. Might've been OK at the =
factory,
but now, 40 years later, .....</DIV>
<DIV> --David Nereson, RPT, Denver </DIV>
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