[pianotech] regulating backchecks?

jim ialeggio jimialeggio at gmail.com
Wed Jul 29 12:07:39 MDT 2009


Hi Mike,

Following discussions with Chris 6 month ago when I was helping him come up
with a way to make version 1 of the string height template,  I constructed
my own version of the virtual keybed.

The concept has excellent possibilities, except for 1 glaring problem which
I have yet to solve.  That is that the "Virtual Keybed" does not even try to
duplicate the keybed, but rather it is instead a full keyboard long
"Virtual String Plane".

A "Virtual String Plane" has excellent possibilities, but only if the actual
keybed plane, ie the suface that the keyframe sits on, matches the piano
exactly. ALas, that is a tall order which I have not been able to achieve
yet.  Small discrepancies in the key bed eat up all that efficiency of
working on the bench as you go back into the piano and do everything over
again...and again..and again.

What I really want is a reliable protocol to prove that the bench top keybed
is precisely matching the piano's keybed.

Any ideas out there?

I have not found setting the key height in the piano and duplicating that on
the bench succesful.  The closest I got was to set some same dips and hammer
strike heights across the board,  reproducing them on the bench.

My current thinking, though,  is that it takes so much time to fuss with
fine bench regulation that has to get redone in the piano anyway, that its
worth it to come up with body freindly, efficient in the piano regulation.
At least that's how I feel for the next 10 minutes..(G)

Jim I


-- 
grandpianosolutions.com (under construction)
Shirley, MA  (978) 425-9026
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