On Jul 24, 10:45 pm, Jon Elson wrote:
William Wixon wrote:

thanks Don,
i'm wanting to take the armature to an electric motor shop, i just want
to be able to walk in the door with some info of my own.
the circuit board, yeah, me too, i don't really know if this thing ran
well or at all. bought it from eBay, auction info said "as is" and "works
good". in a previous post i said one of the carbon brushes was completely
out/gone and the steel spring was rubbing against the slip ring, so, i
suppose it COULD'VE worked but i'm doubting if it worked good. i don't
really know if it worked at all without the circuit board and with the wires
crimped, i didn't try it when i got it, i thought i ought to open it up
first and check it out before i tried to run it. that would be the coolest,
if i could somehow home-build a replacement circuit board (instead of
coughing up the $230 or $400 they're asking for replacement parts).

I'm really wondering why you are messing with this relic from
the early 1960's, at best. I'm pretty sure the field is 2-pole,
so that means the thing has to run at 3600 RPM to make 60 Hz
power. It is going to sound like a shop-vac when running.



No big deal ! All the small cheap generators out there have gas
engines
running at 3600 RPM.




There has to be a regulator to keep the dynamotor at 3600 RPM,
and they can't use the field to do that, as that is what
regulates the AC output. I can't figure from the armature photo
how the speed regulator functions. They might have an AC
frequency detector that cuts a series resistor in and out of the
armature circuit, or even just switch the armature current on
and off to regulate speed. Almost certainly it varies field
strength to regulate AC voltage. Probably with all the
regulation jumpered out it will run a bit above 60 Hz and 120
VAC output, which might be fine for running a small power tool
at a remote site.

Jon