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<DIV>Julia,</DIV>
<DIV> This can happen in a vertical action due to one or more
regulation problems.My guess is that the hammer is being caught
about an inch from the string.</DIV>
<DIV> The quick and easy test is to adjust checking closer to
the string. Shortening the checking changes the angle of the butt when caught
and allows the jack move freely until the key stroke ends.
Don't forget the other regulation specs.Key dip ,blow and letoff --THEN
adjust backchecks.</DIV>
<DIV> Also, too tight bridles can bind the jack .Some
Baldwins have a design that can allow the tab on the strap to slide down
the bridle wire and lock the whippen and butt assemblies together.</DIV>
<DIV> Tom Driscoll RPT</DIV>
<DIV> P.S.</DIV>
<DIV> Actions with an adjustable rail to limit movement of the
jack away from the butt eliminate this problem and improve repetition by keeping
the top of the jack closer to "home"</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=KeyKat88@aol.com href="mailto:KeyKat88@aol.com">KeyKat88@aol.com</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> Thursday, May 04, 2006 8:36
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Jack popped out</DIV>
<DIV><BR></DIV>
<DIV>Greetings, </DIV>
<DIV> </DIV>
<DIV> I had a customer call about a
key that would not play. When I got there and looked, at it the jack had
flipped out from under the butt and was 'stuck' I simply lifted the hammer and
pushed the jack back under. Then I asked if she was doing some loud hefty
playing, as in Beethoven when it happened, and she said "Yes!...That's
exactly what I was playing, Beethoven!".</DIV>
<DIV> </DIV>
<DIV> My question is should this even
happen at all? The key was regulated ok, no excessive space between
jack and butt on a normal blow. I have seen pianos that were moved
and tilted in such a way that the jacks popped foreward, but very few
<EM>while pla</EM>y<EM>ing</EM> that this happened. It is a
Baldwin/Hamilton console from the 60's 70's era; a nice work horse of a
piano. </DIV>
<DIV> </DIV>
<DIV>Julia Gottshall</DIV>
<DIV>Reading, PA</DIV></BLOCKQUOTE></BODY></HTML>