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<DIV><FONT face=Arial size=2>Wim,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Check the flange and balancier pinning
friction, if too high the amount of rep spring tension needs to be higher to get
hammer rise, resulting in the "bobbling" problem. I'd be afraid that with
little or no hammer rise you might run into rep problems or worse, a dead
key!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>David Denison, RPT<BR>Long Island, NY<BR>Nassau
Chapter-Piano Technicians Guild</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>"Keep It Simple"</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=Wimblees@aol.com href="mailto:Wimblees@aol.com">Wimblees@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> ; <A title=caut@ptg.org
href="mailto:caut@ptg.org">caut@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, October 17, 2002 11:55
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> no more bobble heads</DIV>
<DIV><BR></DIV><FONT face=arial,helvetica><FONT lang=0 face=Arial size=2
FAMILY="SANSSERIF">The problem is solved. Whether it is the best way or not, I
don't know, but for now I got the hammers checking. Not only that, I even had
two of our best students come in and play the piano, and they loved the way it
feels. Remember, this is just a practice room piano. But even still, you want
to do the best job. <BR><BR>OK, here is what I did. <BR><BR>I rounded the
tails, as Kent suggested, and roughed them up. I put an arc on the tail last
year, but the end of the tail was square. This at least got the hammers to
check with the action out of the piano. But when I put the action back in, I
still had problems on medium blows. <BR><BR>I told you about the various shank
lengths, most of them being from an 1/8 to a 1/4 inch too long. I discovered
that the ones that were checking on softer blows, also had a weaker rep
springs. So I reduced the rep springs, to the point where in the last octave
of the bass, there was virtually no rise at all. I suspect that because of the
extra weight of the longer shanks, the reps springs were too tight, which was
causing the hammers to bounce off the balancier, even on the hardest of blows.
<BR><BR>Thanks to all of you for all the suggestions. What a great bunch of
friends out there. <BR><BR>Wim </FONT></FONT></BLOCKQUOTE></BODY></HTML>