Mustel Celeste

[Isaac OLEG]

Thanks, Tom, I will look at it soon.

Stability is the main problem, yes the key support flex too much.

As this is a loaned instrument and the 2 celestas of the orchestra are
in the Schiedmayer factory for refurbishing, they don't believe they
had to invest on it.

I'll try to help anyway.

Regards.

Isaac OLEG




> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de Tunebyear@aol.com
> Envoye : vendredi 22 novembre 2002 04:54
> A : pianotech@ptg.org
> Objet : Re: Mustel Celeste
>
>
>
> I got a call to regulate a Mustel too.  It must be
> nutcracker season.
>
> I discovered spring shaping really helped.  I was working
> with the "key
> resistance /touch weight",  could'nt get close to anything
> good.  discovered
> reshaping the "butt return spring "  so that the top
> section which goes into
> the "butt eyelete"  needing to be vertical,  the middle
> bend should be worked
> to a nice round shape if not already. and the bottom kink
> with the set screw
> can have a little extra kink.  The idea being that the
> spring should work
> from the botton and the middle bend giving an even
> resistence throughout the
> key stroke. and the vertical top is to get some friction out of the
> eyelet/spring point.  also I added to each eyelet a felt
> strip glued to
> itself for friction and noise.   The spring work really
> helped get the hammer
> to contact the bar on a soft blow.  Its a challenge when
> let off doesn't
> exist.
>
> I also reinforced keybed against the case front "key
> slip/not"  by attaching
> a support. This helped greatly with the bottom of a forte
> key stroke tending
> to bury the hammer into the bars. it allowed a little
> closer "let off".  The
> "keybed/rails"  were actually bending on a forte stroke.
>
> Hope this helps,,, hope I was understandable with the
> "sketchy nomenclature".
>
> Argggh trying to make an instrument out of a tinker toy.
>
>
> Tom Ayers
>
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