Brambach Regulation

[Andrew and Rebeca Anderson]

Interesting point Joe.  I just pulled the action on one of my grands 
to fiddle with jack position.  I was taught the one way but am 
curious.  Turns out that on this piano both references will put the 
jack in the same position.  I'm guessing that in some pianos there is 
more of a difference.  Perhaps you have more to add to this.  Is 
there a concern that lining up the back (towards back of piano) edges 
might contribute to cheating?

I was privately wondering if close let-off might shorten ideal blow 
distance on this.  After-touch is what you feel after the jack tender 
hits the regulation button and disengages the jack from the hammer 
shank knuckle.  You need enough of this for the action to cycle 
without bobbling off of the top of the jack during soft piano 
passages (jack failing to disengage).  Generally you don't want too 
much or too little (read, some room for taste preferences).

Have fun,
Andrew Anderson

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It frequently takes more than one ugly fact to slay a beautiful theory.
--Chad Orzel