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<DIV><FONT face=Georgia size=2>I think the comment I heard was "get =
it as close
as you can on the bench". There is always a good flat surface you just =
need a
thick blanket so you don't scratch the lid. When you adjust everything =
to
samples, the key bed can just lay flat because when you put the action =
back in
the piano everything adjusts back into place with the samples. Then =
because
string height can vary note to note, fine adjustments must still be made =
in the
piano. Try taking a gauge a mm longer and then the hammer should bobble =
slightly
when you drag it down the string. That is easy to see the low =
ones.</FONT></DIV>
<DIV><FONT face=Georgia size=2></FONT> </DIV>
<DIV><FONT face=Georgia size=2>I take my folding keyboard stand to =
use as an
action table.</FONT></DIV>
<DIV><FONT face=Georgia size=2></FONT> </DIV>
<DIV><FONT face=Georgia size=2>kpiano</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE dir=ltr
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=jkanter@rollingball.com =
href="mailto:jkanter@rollingball.com">jason
kanter</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> Tuesday, February 01, =
2005 10:00
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Let-off in piano</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=622313517-01022005><FONT face="Trebuchet =
MS"><FONT
color=#008080 size=2>Just reading David Nereson's post about the =
old Blüthner
he takes care of. He comments: </FONT><FONT color=#008080><FONT =
size=2><SPAN
class=622313517-01022005>"</SPAN>Can't regulate let-off in the piano =
-- no way
to get at the regulating screws."</FONT></FONT></FONT></SPAN></DIV>
<DIV><SPAN class=622313517-01022005><FONT face="Trebuchet MS" =
color=#008080
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622313517-01022005><FONT face="Trebuchet MS" =
color=#008080
size=2>Which brings up an important point for me. How DO you =
regulate hammer
height and letoff in the grand piano? The method I learned is: Pull =
the
action, measure string height at the extremes of each section using a =
string
height gauge and a busines card; put the action on a nice, firm, flat =
surface
(I know that this is the place where errors creep in, if the keybed =
and the
work surface are not both quite flat); use a contraption to simulate =
string
height; and regulate hammer height, letoff, checking, drop, =
etc outside
the piano.</FONT></SPAN></DIV>
<DIV><SPAN class=622313517-01022005><FONT face="Trebuchet MS" =
color=#008080
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622313517-01022005><FONT face="Trebuchet MS" =
color=#008080
size=2>In some situations I have had to do an on-site regulation =
where there
is no good, flat surface for the action, so I've tried to do it in the =
piano.
I can't see how you can do a good job with it. Feeding a hammer blow =
gauge
through the dampers, turning it 90 degrees and pulling it gently up to =
contact
the undersurface of the string, and holding it there while trying to =
get an
eyeball on the hammer surface from the front of the piano and using =
the other
hand to regulate the capstan ... difficult enough to do samples but =
what a
challenge to do them all that way. Very hard to get a good line of =
sight over
the hammer flange under the pinblock. So I have resorted to =
approximating,
measuring only a few, pulling the action into my lap and eyeballing =
the
tweeners. I *know* the results are not as good as what I could do on a =
good
bench.</FONT></SPAN></DIV>
<DIV><SPAN class=622313517-01022005><FONT face="Trebuchet MS" =
color=#008080
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622313517-01022005><FONT face="Trebuchet MS" =
color=#008080
size=2>Same issue for letoff, and same for backcheck. No doubt you =
more
experienced folks have developed fast, efficient, easy ways to do =
this. Please
enlighten.</FONT></SPAN></DIV>
<DIV><SPAN class=622313517-01022005><FONT face="Trebuchet MS" =
color=#008080
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622313517-01022005><FONT color=#008080 =
size=2><FONT
face="Trebuchet MS">Does Bill Spurlock's description sound like what =
any of
you do? "<FONT color=#000000>hunching over the stretcher, peering =
past the
dampers and through the strings to judge let-off distance, then =
looking under
the pinblock to place the tool on the adjusting screw, then leaning =
forward
again to watch as you make the adjustment. All the while you must =
"squeeze"
the key gradually to slow hammer movement enough that you can =
accurately see
the let-off point."</FONT></FONT></FONT></SPAN></DIV>
<DIV><SPAN class=622313517-01022005><FONT face="Trebuchet MS"
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622313517-01022005>
<DIV><FONT face="Arial Narrow" size=2>| | | | =
| |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | </FONT></DIV>
<DIV><FONT face="Trebuchet MS" size=2>Jason Kanter . piano tuning =
regulation
repair</FONT></DIV>
<DIV><FONT size=2><A href="mailto:jkanter@rollingball.com"><FONT
face="Trebuchet MS">jkanter@rollingball.com</FONT></A><FONT
face="Trebuchet MS"> . cell 425 830 1561</FONT></FONT></DIV>
<DIV><FONT face="Trebuchet MS" size=2>serving the =
eastside and the
san juans</FONT></DIV></SPAN></DIV></BLOCKQUOTE></BODY></HTML>