[CAUT] [pianotech] Baldwin Accujust

[Fred Sturm]

	I'm about to do my first accujust restring this summer (donated L),  
and have questions about procedure: the tap down tool I assume is  
something on the order of a rod with a hole drilled in it, just above  
the size of the pins, and I was thinking of making one of brass. Is  
that a good idea? For lifting, I was thinking of a slide hammer of  
some sort, rather than prying against the plate (with a wooden  
fulcrum), but haven't come up with an easy to make jig to fit around  
the pin under the string and pull up. Anyone have such a design? Or is  
prying with a coil lifter just fine?
	I was planning on using a Wixey gauge, which reads in 0.1 degree  
increments. Which means that I guess one bubble division on Baldwin  
would be close to 0.3, two bubbles just under 0.6, and three between  
0.8 and 0.9 degrees, with the resolution of the Wixey. Am I reading  
the tables right?
Regards,
Fred Sturm
University of New Mexico
fssturm at unm.edu



On Apr 23, 2009, at 3:10 PM, Ron Nossaman wrote:

> Scott Rogers wrote:
>> I have a Baldwin L to restring, and I can't remember what steps are  
>> necessary to setting proper down bearing with the accu-just hitch  
>> pins. I know Baldwin used to loan out a downbearing gauge for  
>> setting DB on each unison. Does anyone know if they still offer  
>> this, and if so contact #'s?
>> Thanks for your help.
>> Scott Rogers, RPT
>
> Bearing1.txt is from a Baldwin tech sheet, direct from the source.
> Bearing4.txt is a conversion chart to relate the instructions in  
> bearing1 to degrees, so you can use a Lowell gage, Wixey, or  
> whatever, instead of Baldwin's gage.
>
> Ron N