Mustel Celeste

[Tunebyear@aol.com]

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