Interchangable Barrels Possible?

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.
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xequa
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Fri Nov 16, 2007 10:17 am

Hi everyone,

I've done some searching on this site, but couldn't find anything about how to make a spudgun with interchangable barrel sizes, or if it's even possible.

I'd like to have a combustion chamber that allows me to change barrel diameters... so I can use my rifled PVC, or switch to my muffler, or smoothbore, or different width (with a flange, of course).

Can anyone point me to where I can study on this further? Or is this just not possible without blowing barrels off the gun?

Thanks!
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benstern
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Fri Nov 16, 2007 10:32 am

We use threaded fittings or cam locks to do this.
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Pete Zaria
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Fri Nov 16, 2007 3:04 pm

xequa wrote:Hi everyone,

I've done some searching on this site, but couldn't find anything about how to make a spudgun with interchangable barrel sizes, or if it's even possible.

I'd like to have a combustion chamber that allows me to change barrel diameters... so I can use my rifled PVC, or switch to my muffler, or smoothbore, or different width (with a flange, of course).

Can anyone point me to where I can study on this further? Or is this just not possible without blowing barrels off the gun?

Thanks!
Welcome to SpudFiles.

Many of us build our guns to accept different barrels - simply use a threaded adapter between the chamber and barrel. You can upgrade to cam-lock fittings to make things even easier.

Look around the Showcase section - even check out my gun, "Pete Zaria's Almost Done Combustion" or something like that (its on the first page). It uses threaded adapters to change the barrels.

Peace,
Pete Zaria.
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BC Pneumatics
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Fri Nov 16, 2007 5:45 pm

Check out the cams on this page: http://www.bcvids.com/store/index.php?cPath=23_31
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BigGrib
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Fri Nov 16, 2007 6:22 pm

These are the cam locks on two barrels
Attachments
Barrels.JPG
Yea, that's definitely going to get you at least a tazer.
<a href="">DONT TAZE ME BRO.. DONT TAZE ME... AHHHH</a>
facebook.com/biggrib
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xequa
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Fri Nov 16, 2007 8:40 pm

Thanks everyone!

I see I have much to learn :)

Do cam locks just glue onto barrels the same way as their PVC adaptors? They sure look easy enough. How cool!

Thanks for the parts page--like a toy store for the spudgun nerd I am!
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JDP12
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Fri Nov 16, 2007 8:43 pm

check out www.advancedspuds.com then check out the green hornet- he shows you how to do it.
"Some say his pet elephant is pink, and that he has no understanding of "PG rated forum". All we know is, he's called JSR. "
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BC Pneumatics
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Fri Nov 16, 2007 8:56 pm

They have NPT threads, they attach to threaded PVC fittings.
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Spitfire
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Sun Nov 18, 2007 4:10 am

i just glued the one adaptor to a small piece of pvc, then glue that onto the adaptor(mine is 110mm to 50mm) then you put the matching adaptor onto your barrels
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