Kimball regulation

[lance lafargue]

Why do you need to "feel" let-off?  (Asking honestly)  Does the piano play
OK?  
LANCE LAFARGUE, RPT
LAFARGUE PIANO SERVICES
New Orleans Chapter
Mandeville, LA.
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lafargue@iamerica.net

"Learn from the mistakes of others. You can't live long enough to
make them all yourself."

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> From: Frank Cahill <fcahill@erols.com>
> To: pianotech@ptg.org
> Subject: Kimball regulation
> Date: Sunday, June 27, 1999 7:37 PM
> 
> I recently regulated a kimball vertical piano.  The only problem I
> encountered was with let-off.
> 
> Normally, when the hammer reaches let-off, you can feel the jack as it
> moves from under the hammer butt.  On this piano, the normal feeling was
> not there...only on a couple of key was it near normal.
> 
> In the past, I've fixed this problem by increasing key height.  I tried
> it on this pinao, but it didn't help.  I even put in a 0.018 punching.
> No difference.
> 
> What's going on?  Could it be that the butt leather presents very little
> friction to the butt or perhaps the edges of the jack are rounded off? 
> This piano is 20 yrs old or so, but the butt leather looks very good.
> 
> This was a strange piano...couldn't find a serial number and several
> keys had been trimmed down so that the width of the key around the
> balance rail was about half of what they would normally be.
> -- 
> 
> Frank Cahill
> Associate Member, Piano Technicians Guild
> Northern Va