Are these parts adequate for Oxy/Acetylene or Oxy/Propylene?

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
SpudGunNoob
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Sat Jun 01, 2019 10:51 pm

Are these parts adequate for an Oxy/Acetylene or Oxy/Propylene build? I'm planning my first serious build and want to make sure this is safe enough to handle the pressures before proceeding any further.

Barrel: https://www.mcmaster.com/5016t77
Reducer: https://www.mcmaster.com/4513k594
Chamber: https://www.mcmaster.com/5016t97
End Cap: https://www.mcmaster.com/4513k284
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jrrdw
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Sun Jun 02, 2019 2:55 pm

You'll be good to go for a simple metered combustion cannon in a warm climate. Search jimmy101 for researched and posted studies on the pressures generated by what fuel types, I think it was jimmy101 or maybe Clyde , someone correct me please if I remembered those Spudfilers wrong.

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SpudGunNoob
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Sun Jun 02, 2019 4:51 pm

jrrdw wrote:You'll be good to go for a simple metered combustion cannon in a warm climate. Search jimmy101 for researched and posted studies on the pressures generated by what fuel types, I think it was jimmy101 or maybe Clyde , someone correct me please if I remembered those Spudfilers wrong.

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Moonbogg
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Tue Jun 04, 2019 5:26 pm

Those are some serious parts. That's a big chamber for sure. Any chance of a build log incoming?
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jackssmirkingrevenge
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Wed Jun 05, 2019 6:56 am

Welcome to the forum!

In general, one would be advised to stay away from the "Oxy" part and rely on a pressurized fuel/air mixture instead. It adds complexity to the build but the result is safer and more reliable.
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Jameshudson506
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Thu Dec 12, 2019 2:45 pm

More than adequate. My oxy acetylene spud gun is made of aluminum pipe and has been very reliable for years. That pipe is rated for high pressure steam . I've also made one from PVC but it was very nerve wrecking. I just see yours being pretty heavy. Lol
wdr0
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Fri Dec 13, 2019 12:45 pm

As an aside, if you have a commercial plumbing supply house near you most have sch 80 steel nipples/fittings in stock and in my experience are much cheaper than McMaster.
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