Welded style expansion chamber as pictured

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  • automeister
    Bunker Buster
    • Aug 2021
    • 480

    #1

    Welded style expansion chamber as pictured

    Anyone have one of these old home brew welded style expansion chambers?
    Attached Files
  • Trbo323
    MCB Member
    • Jul 2020
    • 6358
    • Vancouver WA

    #2
    That is wild. Please get an airbrush artist to paint it like the death star

    Sent from my motorola edge 2024 using Tapatalk

    I use Tapatalk which does NOT display comments. If you want me to see it, make it a post not a comment.

    Feedback
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    Comment


    • automeister
      automeister commented
      Editing a comment
      Hahaha a skilled welder could put a dish in it for the super laser too!
  • Super Nova
    Old School
    • Jul 2020
    • 1812
    • Oregon

    #3
    Anything Star Wars themed gets my vote
    Feedback: https://www.mcarterbrown.com/forum/b...ova-s-feedback
    WTB: ICD stuff, single trigger electro frames, Gloss lime and purple parts, smoke hoppers

    Comment


    • Swedgin!!
      Swedgin!! commented
      Editing a comment
      Agreed.
  • Chuck E Ducky
    Ragnastock Enforcer
    • Jul 2020
    • 6116
    • NY

    #4
    I wonder where you would even find material round like that.

    The top and bottom you can just cut something that’s existing. But where would you even find a base ball size ball of aluminum that’s walls are thick enough to take C02 pressure?

    Automotive break industry maybe? They had to be using something easily available at that time.

    Found the material that might work but $80 😬

    https://shop.wagnercompanies.com/415...um-hollow-ball

    Comment

    • automeister
      Bunker Buster
      • Aug 2021
      • 480

      #5
      So I think the way the one in the picture was made was buy cutting off the top of two old C02 tanks. That would allow them to have fittings attached and would ensure the ability to hold pressure. What are your thoughts?

      Comment

      • Chuck E Ducky
        Ragnastock Enforcer
        • Jul 2020
        • 6116
        • NY

        #6
        Oh I see it now yeah that could work. Much cheaper option as well. What were they made out of I wonder and how well it would weld. Looks like they left the valve burst disk probably a good safety measure. But still a bit sketchy.​

        Comment

        • river031403
          User
          • Jun 2025
          • 274
          • Montebello

          #7
          It’s a Christmas 🎄 ball
          https://www.automags.org/forums/show...r!!LIMITED-RUN


          https://www.automags.org/forums/show...***FEEDBACK***

          Comment

          • The Weltman
            Rockin and Cockin
            • Aug 2020
            • 43

            #8
            Never seen such a thing.

            Comment

            • Ecapnation
              MCB Member
              • Jul 2020
              • 4212
              • South Central Long Island

              #9
              That just looks like a hospital trip

              Comment

              • Chuck E Ducky
                Ragnastock Enforcer
                • Jul 2020
                • 6116
                • NY

                #10
                It dose look dangerous not going to lie. But is it any more dangerous than the cheep China expansion chambers already in circulation. Assuming its welded correctly. Looks like it’s got a burst disk still in it.

                I would trust it if I welded it myself.

                Comment

                • Number six
                  (just a number)
                  • Nov 2020
                  • 289
                  • Altus, OK (I'd never heard of it, either)

                  #11
                  Just my .02, that looks very much like it could be either a hydraulic accumulator or a co2 fire extinguisher bottle from an airplane or something...
                  Attached Files

                  Comment


                  • Number six
                    Number six commented
                    Editing a comment
                    A little digging seems to indicate that Pacific Scientific makes round ones like that. That explains the pressure containment for co2, but I don't know how well it would hold air. You'd have to find a pressure/temp conversion chart for that stuff. Good luck!

                  • Chuck E Ducky
                    Chuck E Ducky commented
                    Editing a comment
                    I think that is much bigger than the one in the photo. It looks like two tank top half welded together. It even looks like they left the Co2 valve on the top half of you look close.

                  • Number six
                    Number six commented
                    Editing a comment
                    Just an example of one, they're not standardized.
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