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AIRCO Info gas engine welder


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  #1  
Old 11-10-2016, 01:56:46 PM
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Default AIRCO Info gas engine welder

I picked up this AIRCO gas engine welder at a garage sale for a good price.
Need some info on it I think from the 1970s or 80s ?
Engine runs good at full output.
I only have 50 Volts Ac on the power outlets. ( duplex )
Brushes look to be original, and is a two brush generator.
I have not done any electrical work on it, thinking to replace brushes first.
I know some miller parts will work, but any help and ID is appreciated.
Thank You. Phil
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Last edited by OldironPhil; 11-11-2016 at 01:24:49 PM.
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Old 11-11-2016, 03:21:32 PM
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Default Re: AIRCO Info gas engine welder

Quote:
Originally Posted by OldironPhil View Post
I picked up this AIRCO gas engine welder at a garage sale for a good price.
Need some info on it I think from the 1970s or 80s ?
Engine runs good at full output.
I only have 50 Volts Ac on the power outlets. ( duplex )
Brushes look to be original, and is a two brush generator.
I have not done any electrical work on it, thinking to replace brushes first.
I know some miller parts will work, but any help and ID is appreciated.
Thank You. Phil
Its a miller welder. Bring careful when engine running hold a little fine scotchbrit to the slip rings, to clean oxidation, most likely will do the trick
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Old 11-11-2016, 11:42:22 PM
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Default Re: AIRCO Info gas engine welder

Was this welder built by Miller for AIRCO or an AIRCO welder used by miller when I think they bought the company ??? I did notice blue paint under the orange paint. Phil
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Old 11-12-2016, 09:50:23 AM
mschreiber mschreiber is offline
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Default Re: AIRCO Info gas engine welder

i believe it was built by miller, painted airco colors at factory and then marketed by airco. i'd ask here for more info.

http://weldingweb.com/forum.php

scroll up to miller forum.
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Old 11-18-2016, 04:54:21 PM
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Default Re: AIRCO Info gas engine welder

Cleaned up the slip rings, came out nice. still only 50 VAC on the outlet. Assuming the armature and winding's are Ok may be a brush problem, or other. Engine runs up to speed , any other things to check with a meter. From research looks to be a Miller Bluestar 1E or 2E I did find the manuals for this welder Thanks for the Miller website advice.
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Last edited by OldironPhil; 11-19-2016 at 02:49:33 PM.
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Old 11-20-2016, 04:26:26 PM
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Default Re: AIRCO Info gas engine welder

Maybe a brief pass of 320 grit auto body sand paper under the brush
Stopped of coarse.
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Old 12-08-2016, 06:00:34 AM
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Default Re: AIRCO Info gas engine welder

My BlueStar 2E actually has a switch that selects between WELD and GENERATE.

When in the GENERATE position, the electrical output is around 115v/60hz.

In the WELD position, it's substantially less, and lower at idle, and when governed up for welding, will be slightly higher, but highest, and best regulatoed, when there's a welding load. I believe it's because the AC output is determined by the amount of field intensity, which is developed both by the field, but also by the welding load current.

In the WELD position, the receptacle still provides power, but it's not regulated... it's fine for a lamp and a fan, or a hand-held angle grinder...
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Old 12-08-2016, 09:51:14 AM
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Default Re: AIRCO Info gas engine welder

I tried the switch in both positions in weld the voltage disappears. In generate it comes back to around 54 volts AC. Could be the switch bad, will not strick a good arck when set at 110, I am waiting for some NOS brushes I ordered, will try that.
Slip rings cleaned up nicely, if no change will check field coils, hopefully good. I only paid $65.00 for it so at the worst I have a good running K301 Kohler engine and scrap, or set up a ac gen in it. I think even if I sunk $300 or $400 into it would be worth it. May take to miller dealer and have them check it out for there $85.00 service charge. Phil
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Last edited by OldironPhil; 12-08-2016 at 12:22:25 PM.
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