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Barrel & hpa tank

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Barrel & hpa tank

Unread postAuthor: Griff » Thu Oct 04, 2007 9:27 am

I just put together the main parts of my first bbmg. Its a cloud type and I was wondering what kind of material I should use for the barrel. I also dont have an air compressos so how could I make an hpa tank?
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Unread postAuthor: Griff » Thu Oct 04, 2007 9:30 am

By the way I want it to shoot 6mm airsoft.
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Unread postAuthor: spudgunnerwryyyyy » Thu Oct 04, 2007 9:33 am

If you regulated the hpa tank it would be fine. 5/16"brakeline works great and its steel so it wont bend easily. go to your local auto parts store and get some.
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Unread postAuthor: goose_man » Thu Oct 04, 2007 9:35 am

Just to let you know, most people frown upon double-posting (two posts by the same person in a row). Try using the edit button in the upper-right corner of the post.

You can use a 3/8" OD Plastruct tube. One of the white ones.

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Unread postAuthor: Griff » Fri Oct 05, 2007 6:28 am

Sorry about the double post ( im new ) Ill be on the look out for that brake line. spudgunnerwryyyyy what do you mean by regulate? I also dont have a real air tank right now, just a 2 liter soda bottle. 80 psi gives about 4 sec of constant fireing. could I increase the fire time by just adding more bottles?
Thanks a lot
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Unread postAuthor: jackssmirkingrevenge » Fri Oct 05, 2007 6:36 am

Griff wrote:just a 2 liter soda bottle. 80 psi gives about 4 sec of constant fireing. could I increase the fire time by just adding more bottles?
Thanks a lot


with 2 litres of air in my vortex project I get about the same firing time. Increasing your capacity will add to the fire time, but you could also get your hands on a high pressure CO2 or HPA bottle (like the type used for paintball guns) and a regulator to give you much more capacity.
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Unread postAuthor: Griff » Fri Oct 05, 2007 8:41 am

Yea I thought of that to, the only thing is im in Japan and they dont play paintball over here or have any parts like air tanks. the pvc is also a bit weaker over hear, definatly would not make a tank out of the stuff.
Some friends looked at a paintball mag of mine and they want to try. I plan on building a couple of these, hopefully all with a decent portable air supply. Thanks for the help though :) That m249 mag is awsom by the way :D
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Unread postAuthor: DYI » Fri Oct 05, 2007 4:25 pm

You could always get a CO2 tank used for electric welding, and attach a pressure regulator to it.
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Unread postAuthor: Griff » Sat Oct 06, 2007 8:12 am

Electric welding? not sure what that is. DYI are you talking about a tig welder? Im also unsure about a reg. How dose it work, and were could I get one. Or could I build one? thx
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Unread postAuthor: Marco321 » Sat Oct 06, 2007 8:29 am

Griff wrote:Electric welding? not sure what that is. DYI are you talking about a tig welder? Im also unsure about a reg. How dose it work, and were could I get one. Or could I build one? thx


I think he means TIG or MIG, i hear some pneumatic power tools have a CO2 supply that can be brought.

Ill explain a regulator
In bottles like CO2, the gas is stored under lots of pressure (around 800psi) to form a liquid. A regulator attaches onto the bottle and brings the pressure down to whatever you want, say 100psi, which is much better and safer to use.
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Unread postAuthor: benstern » Sat Oct 06, 2007 8:35 am

You could try ebay or look locally and maybe use scuba cylinders and stuff.
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Unread postAuthor: Griff » Sat Oct 06, 2007 8:40 am

Thanks Macro321 for the explanation. I play paintball. I knew what the reg was I just diddint know how it works. Soo I guess id need a real air tank and a reg. For now I think I will stick to soda bottles at 80 psi, Thanks for the advice guys :D OhI diddint even think of scuba tanks & regs. What about a colman propane tank (for air after the propanes gone)?
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