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<DIV><FONT face=Arial size=2>Your problem is too wide to diagnose =
online.
We need more information. First and foremost, you need =
to
determine if the piano is sluggish in the key or the action (or =
both).
Usually, it's just one or the other. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>
<DIV><FONT face=Arial size=2>To determine if it's in the key or the =
action, do
the following test. Press a key (normal) and let it go into
check. Hold the whippen up by the back check. Take your =
other hand
and drop the key. SLOWLY let the backcheck down. Does =
it reset
by itself? Did the jack reset? Are the bridle straps =
allowing it to
drop?</FONT></DIV></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>You spoke of easing the balance =
holes.
Actually, there are 3 places on the key that can stick...balance hole, =
top
bushing and the front bushing. All need to be looked at and =
checked.
Be careful, it's easy to over do the easing. Also, by lifting up =
on the
key slightly and letting it drop SLOWLY, you can tell where the =
tightness
is. You need to be able to diagnose which of the 3 points it =
is tight
at just by letting the key drop. Usually, it is only one =
place.
Don't haphazardly ease all three. When it is a bushing, where do =
you
ease?....You look at the bushing and you will see wear marks inside that =
will
tell you where the bushing is rubbing. Ease that side only. =
You do
not need to ease both sides. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Are the capstans too high? That =
is a common
problem in many pianos, especially Kawai/Yamaha. Push the key very =
softly,
let it cycle and go into check. Let off VERY slowly. Does =
the
whippen totally reset? If not, capstans could be =
involved.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ron Shiflet</FONT></DIV>
<DIV><FONT face=Arial size=2>Thatcher, AZ</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></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=josephspiano@attbi.com =
href="mailto:josephspiano@attbi.com">Joseph
Alkana</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> Monday, February 04, 2002 =
9:50
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Yamaha U1 - =
spongy, lack of
repetition...</DIV>
<DIV><BR></DIV>
<DIV>Jay,</DIV>
<DIV>Re-check the damper lift to key timing It's probably a little =
early in
the key stroke. How close is the checking right now? I'll bet the =
regulation
is not correct. </DIV>
<DIV> </DIV>
<DIV><FONT size=2>Joseph Alkana RPT<BR><A
=
href="mailto:josephspiano@attbi.com">josephspiano@attbi.com</A></FONT><=
/DIV>
<BLOCKQUOTE
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=jaymercier@hotmail.com =
href="mailto:jaymercier@hotmail.com">Jay
Mercier</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> Tuesday, February 05, =
2002 4:31
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Yamaha U1 - spongy, =
lack of
repetition...</DIV>
<DIV><BR></DIV><BR>List,<BR><BR>The symptons include spongy keys, =
lack of
repetition, and overall lack of <BR>control when playing fast =
runs.
It's also difficult to feel aftertouch, <BR>even though it's =
there.<BR><BR>A
1999 Yamaha U1, purchased brand new in the U.S., after customer =
complains
<BR>I proceed to the following:<BR><BR>1. With all cabinetry =
in place,
the keys stay up on the balance pins when <BR>lifted upwards. =
I eased
the balance rail holes a bit. The keys no longer <BR>stay
up.<BR><BR>2. I slightly weakened the damper =
springs.<BR><BR>The
symptons are as evident as ever. Do I try lubing the capstans, =
<BR>balance/front rail pins and key bushings with =
protek?<BR><BR>Regulation
looks good, very good & uniform. There is only slight =
excess
<BR>lost motion.<BR><BR>The symptons get better with left pedal
depressed.<BR><BR>Any suggestions?<BR><BR>Jay Mercier<BR>Associate
member,<BR>Twin Cities Chapter PTG<BR>Glenwood,
=
MN<BR><BR><BR>___________________________________________________________=
______<BR>Join
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