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My first

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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My first

Unread postAuthor: SquishY » Fri Oct 13, 2006 5:28 am

Well, here is my first pneumatic, has a 5:1 C:B. Chamber is 4" SCH40 and barrel is 2" SCH40.
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I know I need to plug the solenoid holes, I just misplaced the solenoid. Did I miss anything?
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Unread postAuthor: rna_duelers » Fri Oct 13, 2006 5:47 am

Nice first gun maybe a longer barrel thought a ratio of 2:1 works well.Whats the main ammo?
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Unread postAuthor: SquishY » Fri Oct 13, 2006 6:15 am

Whatever fits in the barrel, with my 2" combustion it was tight packed duct tape balls and a kool emt rocket thingy, the occasional potato and apple made its way out to. Since with this I won't have to worry about stuff falling into the chamber clouds will be made of flour and confetti, might even try water but I will need a new valve cover for any higher pressures.
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Unread postAuthor: Pyro Ninja » Fri Oct 13, 2006 6:38 am

cool gun pretty big chamber :D
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Unread postAuthor: SquishY » Fri Oct 13, 2006 12:52 pm

The chamber is 30", I went with 5:1 to give good power and efficiency.
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Unread postAuthor: Recruit » Fri Oct 13, 2006 2:38 pm

well i dont see a valve to let air in the chamber and cant do much without that
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Unread postAuthor: SquishY » Sat Oct 14, 2006 2:16 am

There is a schrader on the cap, it's not in the pic. Did you honestly think me for an idiot? Got a new valve today and was shooting it using the 'noid and once it was modded it no longer seals because there is raised plastic near the hole and it rubs off the tape before it goes into the hole, tomorow this will be remedied with a trip back to Lowes and some Dope.
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Unread postAuthor: killagorrila99 » Sat Oct 14, 2006 2:21 am

I like it, much better than my first ( duck tape and a pringles can) loverly job by the way, I dont see one primer stain.
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Unread postAuthor: MrCrowley » Sat Oct 14, 2006 2:48 am

prolly coz he used clear primer but still nice job on the cannon a paintjob would be great,isnt the barrel a tad short?run it through GGDT
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Unread postAuthor: SquishY » Sat Oct 14, 2006 2:48 am

I put the primer deep in the joints and quickly wiped excess with laquer thinner. :P I hate stains, how ever I am out of primer now so would it be safe to just use alot of glue and not much pressure for a small one?
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Unread postAuthor: MrCrowley » Sat Oct 14, 2006 3:03 am

i didnt use primer on a combustion, which is around 40psi but it may pay just to buy some more
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Unread postAuthor: mac » Sat Oct 14, 2006 3:58 am

Thats one sweet looking cannon, it looks very similar to what I'm wanting to create.
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Unread postAuthor: SquishY » Sat Oct 14, 2006 11:44 pm

Well this one is being retarded and won't seal around the airgun fitting, although today I built a pretty small one, 6"x2" chamber 12"x1/2" barrel, it takes 10pumps to get to 45psi. I took it to about 80psi and it started to leak around the male adapters on the ballvalve but it's pretty fun to shoot those disposable earplugs evne though they are to small.
I'll post of a pic if the baby later on.
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Unread postAuthor: killagorrila99 » Sat Oct 14, 2006 11:53 pm

Well get some epoxy and put it around the airgun fitting. Simple.
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Unread postAuthor: SquishY » Sun Oct 15, 2006 12:44 am

I don't have any epoxy, just the plumber good crap but it didnt work. a 2" ball valve or the epoxy idea, either way this thing WILL shoot something.
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Whoever cannot take care of themself without that law is both.
For a wounded man shall say to his assailant,
'If I live, I will kill you. If I die, You are forgiven.'
Such is the rule of honor.
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