Upright let-off jig

Piannaman@aol.com Piannaman@aol.com
Thu, 12 Jan 2006 23:26:15 EST


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I'm sure someone's thought of this before, so forgive me if my idea is  
unoriginal!
 
For those of you who use Bill Spurlock's grand letoff jig, this should  sound 
familiar.  Every upright has a built in let-off jig:  the hammer  rail.  
Today I was playing with a Hallet-Davis (Pearl River version) that's  about 3 
years old.  It needed let-off regulation in a bad way, so I  experimented with the 
hammer rest rail.  On this particular piano, I could  push it far enough 
forward so the hammers were close to the strings,  even ON the strings.  Some 
pianos won't allow for that much movement,  but this one did.  
 
I set a some samples for letoff, then pushed the rail forward to the point  
where those hammers would wink when I depressed the key.  I blocked  the rail 
so it stayed there, then adjusted the let-off to  make the hammers wink.  
Worked like a charm.  
 
Pianos that won't allow for such free motion of the hammer rail may require  
something to clamp onto the rail for the shanks to rest on--the Spurlock jig  
comes immediately to mind.
 
Hope this helps someone in some small way!
 
Dave  Stahl

Dave Stahl Piano Service
650-224-3560
_http://dstahlpiano.net/_ (http://www.dstahlpiano.net/) 

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