<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; =
charset=iso-8859-1">
<META content="MSHTML 6.00.2900.2769" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Alan,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Hmm. Are you making your =
adjustment by
looking at the jack height in the window, or by feeling the =
jack/knuckle
relationship by lighty tripping the jack tender with your =
finger and
observing the hammer wink?
<DIV><FONT face=Arial size=2></FONT> </DIV> </FONT><FONT =
face=Arial
size=2>Barbara Richmond</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=tune4u@earthlink.net =
href="mailto:tune4u@earthlink.net">Alan
Barnard</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">Pianotech</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, October 30, 2005 =
9:42
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Alan's Maxim and =
partial answer
to: Puzzler for a rainy Sundayafternoon ...</DIV>
<DIV><BR></DIV>
<DIV>Phil has it (I think).<BR><BR>The jack height adjustment, or more =
correctly the repetition lever height adjustment, must be made before =
letoff,
drop, etc. Because we are dealing with something in the order of =
2/10ths of a
millimeter that has to be adjusted by feel, it is easy to have it =
wrong even
if it "looks" right.<BR><BR>I learned, in this challenging little =
experience,
that a very, very slight change in height makes all the difference in =
the
world. Too much of a gap creates obvious lost motion detectable by =
slowly
pressing the key down. But too little (jack too high, lever too low) =
takes the
rep lever out of the ball game entirely as far as repetition is =
concerned.
</DIV>
<DIV><BR>Now here's a true confession: I honestly don't know why this =
made
such a difference, but after much frustration, I rechecked this =
adjustment,
raised the lever (lowered the jack, relatively) and was THEN able to =
set a
letoff and drop just as sweet as you please. Prior to that, no =
combination
worked! Key point: The adjustment on this note <EM>looked</EM> just =
like it's
neighbors--and they regulated just fine.<BR><BR>>>> I'd =
actually
appreciate explanation or comment from you who have regulated so many =
more
actions than I.<BR><BR>As Yamaha so aptly states: "One large =
difference
between a grand action and a vertical action is that the grand has the =
repetition lever. However, the lever loses its value in direct =
proportion to
how poorly is is regulated. Remove all lost motion, but make sure the =
jack can
return under any circumstance. Then the repetition lever can live up =
to its
name."</DIV>
<DIV> </DIV>
<DIV>So here, brand new and hot off the press, is "Alan's =
Maxim": <EM>If
you are having trouble regulating an action, back up a few steps and =
make sure
you have good regulation in those earlier steps.</EM></DIV>
<DIV> </DIV>
<DIV>Might save ya some tears some day! ;-}<BR></DIV>
<DIV>Alan Barnard<BR>Still Larn'n, Thank'e, in Salem, MO<BR><BR>> =
[Original
Message]<BR>> From: Phil Bondi <phil@philbondi.com><BR>> =
To:
Pianotech <pianotech@ptg.org><BR>> Date: 10/30/2005 6:44:10
PM<BR>> Subject: Re: Puzzler for a rainy Sunday afternoon
...<BR>><BR>> Spring tension non-existent?<BR>> Jack too high =
in the
window?<BR>><BR>> ..this is a good puzzler,<BR>><BR>> =
-Phil
Bondi(Fl)<BR>><BR>>
_______________________________________________<BR>> pianotech list =
info:
=
https://www.moypiano.com/resources/#archives<BR></DIV></BLOCKQUOTE></BOD=
Y></HTML>