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<DIV><FONT size=2>Hi, Michael,</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Here are some sites that might work as a "Rosetta =
Stone" for
US parts terms:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2><A
href="http://www.musicplay.com/action/action.html">http://www.musicplay=
.com/action/action.html</A></FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2><A
href="http://www.rennerusa.com/Renner_Action/Action_Parts/action_parts.=
html">http://www.rennerusa.com/Renner_Action/Action_Parts/action_parts.ht=
ml</A></FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2><A
href="http://www.pianosupply.com/dl/">http://www.pianosupply.com/dl/</A=
></FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>UK "set-off" = US "letoff"</FONT></DIV>
<DIV><FONT size=2>UK "let-off" = US "drop"</FONT></DIV>
<DIV><FONT size=2>UK "striking distance" = US "blow =
distance"</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>"The UK and the US are divided by a common =
language." -- Mark
Twain.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>--Cy Shuster--</FONT></DIV>
<DIV><FONT size=2>Rochester, MN</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=michael@gambles.fsnet.co.uk
href="mailto:michael@gambles.fsnet.co.uk">Michael Gamble</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, October 08, =
2003 3:20
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Grand =
regulation...</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Hello all. This is an attempt to get =
some input
from those who (that means all of you I guess) frequently regulate =
grand
actions. From the start we have a few hurdles to get over and of these =
the
principal one is that of terminology. In regulation you get a) the =
parts which
are being regulated and b) the name given to that part of the =
regulation
process. Are we at one with the name "striking distance"? which should =
be
about 1 7/8" Then we have "Set-off" In this part we adjust the =
"Set-off
Button" until it touches the toe of the "Jack" and causes the hammer =
to stop
rising and go into the "escapement" mode.This Set-off happens about =
1/16"
below the string. Next we have the "Let-off" (I think that's =
sometime
called "Drop") when the hammer after hitting the string is allowed to =
subside
another 1/16". Not to be confused with "Check" when the hammer after =
hitting
the string more forcibly rebounds into the loving grasp of its =
check-block. If
then, whilst the hammer is captivated in check you gradually release =
the key
the hammer should float upwards - not too fast. This we call "Hammer =
rise"..
OK?</FONT></DIV>
<DIV><FONT face=Arial size=2>The point of all this is I went to =
tune a new
Petrof grand the other day and was amazed by how much this =
Czechoslovakian
manufacturer had deviated from what I considered the "norm". The =
results were
as follows:</FONT></DIV>
<DIV><FONT face=Arial size=2>Striking height 1 7/8" =
(OK)</FONT></DIV>
<DIV><FONT face=Arial size=2>Check 13/16" ?</FONT></DIV>
<DIV><FONT face=Arial size=2>Set-off 1/8"!!!</FONT></DIV>
<DIV><FONT face=Arial size=2>Let-off 3/8"!!!!</FONT></DIV>
<DIV><FONT face=Arial size=2>And the hammer-rise test showed that =
all the
hammers came up faster than you can say knife!</FONT></DIV>
<DIV><FONT face=Arial size=2>Here's the question therefore =
-</FONT></DIV>
<DIV><FONT face=Arial size=2>What are the correct =
settings?</FONT></DIV>
<DIV><FONT face=Arial size=2>My Steinway service manual =
adheres pretty
firmly to my first list of requirements except that the "Let-off" is
considered with relationship to the diameter of the string
affected.</FONT></DIV>
<DIV><FONT face=Arial size=2>Oh yes - there's another aspect of =
regulation.
It's vital that the "Key depth" be correct. Steinway recommend 9.75 on =
models
S - B and 9.75mm on C & D</FONT></DIV>
<DIV><FONT face=Arial size=2>Reblitz, on the other hand, is a bit =
more
"global" in his approach giving more latitude. </FONT></DIV>
<DIV><FONT face=Arial size=2>At the end of the day does the piano =
react as a
concert pianist would expect?</FONT></DIV>
<DIV><FONT face=Arial size=2>Over to you.</FONT></DIV>
<DIV><FONT face=Arial size=2>Michael G
(UK)</FONT></DIV></BLOCKQUOTE></BODY></HTML>