Airco 300 super hornet/Miller Big 40 same thing?
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  1. #1
    Join Date
    Dec 2019
    Posts
    10

    Airco 300 super hornet/Miller Big 40 same thing?

    I have read where the Airco 300 super Hornet and the Miller Big 40 are the same machine just different paint job. Can anyone confirm this for me?
    Thanks Kenny

  2. #2
    Join Date
    Jun 2014
    Location
    Southern Illinois
    Posts
    746

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    Yes. The Big 40 is basically the same machine. I restored a Super Hornet 300 last year. Good machines


    Sent from my iPhone using Tapatalk
    Steve

    Miller Dialarc 250 (1990)
    Miller Maxstar 140 STR (2003)
    Lincoln SA200 Redface Pipeliner (1966)
    Lincoln MP210 (2015)
    Victor and MECO torches

  3. #3
    Join Date
    Dec 2019
    Posts
    10

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    Thank you for responding. can the main front and back bearings on the armature be lubricated? I just bought this one and it has been sitting out in the weather for a while and i think the bearings may be dry.
    thank you again for your response.
    Kenny

  4. #4
    Join Date
    Jun 2014
    Location
    Southern Illinois
    Posts
    746

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    Not something I had an issue with but I’m guessing they are sealed. Most are to keep someone from over greasing and getting grease on things that don’t need grease. Download a manual from Miller. I think the 2 letter prefix on the serial is the same as Miller


    Sent from my iPhone using Tapatalk
    Steve

    Miller Dialarc 250 (1990)
    Miller Maxstar 140 STR (2003)
    Lincoln SA200 Redface Pipeliner (1966)
    Lincoln MP210 (2015)
    Victor and MECO torches

  5. #5
    Join Date
    Dec 2019
    Posts
    10

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    Thank you so much.

  6. #6
    Join Date
    Dec 2019
    Posts
    10

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    Hey Sparkie, Can you help me with where to buy parts? Best I can tell my machine is a 1973 or 1974 Airco 300 super hornet.
    Thanks Kenny

  7. #7
    Join Date
    Jun 2014
    Location
    Southern Illinois
    Posts
    746

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    Well for engine parts ( F163 Continental) they can be purchased at NAPA or anyplace that has industrial engine parts. Steiner tractor online, Monte's in Chicago is a source. Miller dealers are the place for welder parts, this might be hard do to not knowing exactly which Big 40 is the same as your Airco. Call Bill's Welder Repair in Oklahoma City and talk to Kaye, she would be a great resource.


    Sent from my iPad using Tapatalk
    Steve

    Miller Dialarc 250 (1990)
    Miller Maxstar 140 STR (2003)
    Lincoln SA200 Redface Pipeliner (1966)
    Lincoln MP210 (2015)
    Victor and MECO torches

  8. #8
    Join Date
    Dec 2019
    Posts
    10

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    Thank you Steve.

  9. #9
    Join Date
    Jun 2014
    Location
    Southern Illinois
    Posts
    746

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    Here’s the one I restored



    Sent from my iPhone using Tapatalk
    Steve

    Miller Dialarc 250 (1990)
    Miller Maxstar 140 STR (2003)
    Lincoln SA200 Redface Pipeliner (1966)
    Lincoln MP210 (2015)
    Victor and MECO torches

  10. #10
    Join Date
    Jun 2014
    Location
    Southern Illinois
    Posts
    746

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    One more



    Sent from my iPhone using Tapatalk
    Steve

    Miller Dialarc 250 (1990)
    Miller Maxstar 140 STR (2003)
    Lincoln SA200 Redface Pipeliner (1966)
    Lincoln MP210 (2015)
    Victor and MECO torches

  11. #11
    Join Date
    Jan 2004
    Location
    Brethren, Mi
    Posts
    944

    Re: Airco 300 super hornet/Miller Big 40 same thing?

    There is a time and place that would be a dandy machine. Can get something like that to run priced right buys a little fuel. Could likely air arc a little and run any rod a guy could wrangle and most of them at 1/2 or 60% power. A box of 5/32 lo hy would be a teaser.

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