Kawai keyframe leveling

[bruce greig]

Phil, Thanks for your comments, I have e-mailed Kawai, but now that I have a
name I'll give Don a call tomorrow.  The knock comes on the front rail only,
mostly near the bass/tenor break.  I also forgot to mention that the
keyframe is kerfed - wonder if that might be the culprit.  I seem to
remember vaguely (but then most of my memories are vague these days) hearing
something about inaccurately cut kerfs being a problem on some piano or
other.

Bruce

----- Original Message -----
From: "Phil Glenn" <Phil@yca.tzo.com>
To: <pianotech@ptg.org>
Sent: Tuesday, June 10, 2003 7:04 PM
Subject: RE: Kawai keyframe leveling


> I was taught that you should keep pulling things out of your bag-o-tricks
until something works.
> The thumb tack idea is a great temporary fix that I'll add to my bag.
> However, Bruce mentioned that this was a long term problem, so it deserves
a long term fix.
> There was no mention of where on the rail the knock is coming from.
Because of the thumb tacks, we assume the front rail,
> but is it the sides or the mid section?  If it is knocking at the sides,
it could be due to the fact that the key block action guides are not
pressing down on the keyframe guides. It was wise of Bruce to be wary of
creating further damage but those guides are designed to have slight
pressure and until they do, you cannot isolate the problem. I would contact
Kawai and ask Don if there is a way to make that adjustment to the key block
action guide before I tried anything else.
>
> Phil Glenn
> National Service Manager
> Young Chang Acoustic Pianos
> (800) 874-2880 x110
>
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