[CAUT] [pianotech] Baldwin Accujust

[Fred Sturm]

On Apr 26, 2009, at 10:30 AM, Ron Nossaman wrote:

> Yes. The bearing will, should anyone actually follow the procedure,  
> be below 1/3° from bass through mid tenor, and around 0.8° in the  
> high treble. Theoretically, at least. If you actually find  
> measurable bearing and crown in octave 5-6, you should have bought a  
> lottery ticket instead.

	I so rarely see positive bearing and crown in more than sporadic and  
tiny increments out here in the desert, I guess I've stopped expecting  
it. In any case, it seems like I should have the mindset of finesse  
and easy does it for the Baldwin accujust job. My notion is I don't  
really care about reproducing what is there now (40 years later or  
so), but I do want to load the board somewhat, and probably no more  
than it was designed to be at first. Crown is next to nil at this  
point, which is under conditions of 8% RH last reading, and below 20%  
for the last 6 months. And I expect to get to the job before the  
monsoons raise RH to 60%, so a wee mite of DB in the general  
prescribed proportions seems appropriate, probably on the shy side -  
expecting higher RH to produce higher DB. (BTW, the piano is "quite  
loud" at the moment - partly it needs voicing, but it puts out plenty  
of volume).
	While I'm posting, thanks to you, Ron, and to March PTJ for the Wixey  
gauge ideas. I guess that would be a reason I should have subscribed  
to pianotech: would have got that hint much sooner (I assume that was  
the source for PTJ). Seems like a great tool, much better than any I  
have devised (and now I won't bother getting a Lowell - this seems  
much more "user friendly"). The 0.1 degree resolution seems like about  
the lowest useful reading for our purposes.

Regards,
Fred Sturm
University of New Mexico
fssturm at unm.edu