stuck

[Lance Lafargue]

Have you tried different backcheck *angles*??  That's my guess.  As to the
jack-- is the key height correct?  What's aftertouch like??  Keyframe
bedded well?  
Lance Lafargue, RPT
New Orleans Chapter
Covington, LA.
lafargue@iamerica.net

----------
> From: NBWW@aol.com
> To: pianotech@ptg.org
> Subject: stuck
> Date: Wednesday, July 22, 1998 8:45 AM
> 
> List
> 
> I was asked to regulate a Steinway B. What I found has me stuck. Two
things.
> When the hammers drop after releasing the keys they hit the top of the
back
> checks. Hammers are bored to factory specs. Checking is very good. No
amount
> of  repositioning the back checks seemed to solve the problem without
> compromising their function. The sesult is a slight "bump" feeling in the
key-
> like you get when the under lever stop rail is set too high and the
dampers
> bounce.
> The other problem is the jack. With the dip at .375, blow at 1 5/8", the
back
> of the jack is being pressed into the cushion in the back of the
balancier
> window. It is literally captured between that cushion and the let off
button.
> Increasing either the dip or blow distance makes the problem worse. At
these
> settings the action functions and feels good to me. I've done a lot of
> regulating in 22 years and I'm still learning, but I can't make sense out
of
> these problems. I've seen the hammer problem on a Steinway D once and the
jack
> problem on a Kawai GS 60. What have I missed? The college is trying the
piano
> today and I'm calling them next week for a report. There is evidence of
other
> techs attempts to deal with this piano and the current tech is smart
enough to
> know its over his head. He's grateful to find some one to pursue the
problems-
> for there are many Steinways on the campus and in town that have no one
to
> service beyond tuning and some regulating.  Am I standing too close to
the
> trees to see the forest?
> 
> Paul Chick RPT