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First steel cannon

Built a combustion 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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First steel cannon

Unread postAuthor: Khyren » Thu Jan 24, 2008 11:18 pm

here they are after I took the vid

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Unread postAuthor: Novacastrian » Thu Jan 24, 2008 11:27 pm

That is what i call building a cannon with balls. I hope you are planning to use propane/oxy mixes in this super Hercules style "artillery piece".
Must handle recoil quite well too, seeing as though how heavy it must be.
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Unread postAuthor: Isomer » Fri Jan 25, 2008 12:08 am

With a chamber setup like that, you should convert it to a hybrid (make sure it can handle wicked pressure). It's really sick and nice spark gap setup. Is that a 1.5" barrel? Nice build
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Unread postAuthor: LikimysCrotchus5 » Fri Jan 25, 2008 12:16 am

Yea that definately looks like its built for hybrid use and if i were you i would try to convert that into a hybrid as Isomer said.

Nice build though, but do you have any more details?
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Unread postAuthor: Eddbot » Fri Jan 25, 2008 1:31 am

good god :shock: that looks like an artillery piece, NICE 8)

edit: oh sh*t sorry novacastrain, i just glanced at the other posts
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Unread postAuthor: Killjoy » Fri Jan 25, 2008 1:36 am

Damn that looks sweet. Great job on the ignition. You should use oxygen fuel mix for sure.
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Unread postAuthor: Khyren » Fri Jan 25, 2008 11:27 am

Yeah, I have an elaborate scheme for oxy/propane mixing. As for hybrid, I don't know how I could keep the projectile in there. Incidentally though, because of the ventilation problems I'm having, it would be REALLY easy to make it a hybrid with my venting system. The barrel is 2.625" ID. Perfect for tennis balls and smaller water bottles. If I was to correct the CB ratio, I'd need a 15 foot barrel.

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Unread postAuthor: sjog » Fri Jan 25, 2008 7:02 pm

Steel is the was to go!!!
I'm getting tired of PVC my self and want move up to steel.
I want a gun that I can leave in the back yard , cover with a tarp,and shoot all winter.
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Unread postAuthor: bigbob12345 » Fri Jan 25, 2008 7:06 pm

Nice job where did you get steel pipe that big.
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Unread postAuthor: DYI » Fri Jan 25, 2008 7:12 pm

That is what i call building a cannon with balls

I can't say it any better than that.

You really need to try hybrid oxy/propane mixes. Or, for that matter, oxy hydrogen with an electrolysis machine powered by an arc welder :D

I don't see any fuel metering system, but this thing has a lot of potential. With a union, you could do some mad hybrid mixes.

And Bob, 4" steel tubing is quite common if you look around at welding shops. My tech lab alone has about 30' of the stuff, and I have a few feet lying around my shed somewhere.
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Unread postAuthor: bigbob12345 » Fri Jan 25, 2008 7:19 pm

DYI wrote:And Bob, 4" steel tubing is quite common if you look around at welding shops. My tech lab alone has about 30' of the stuff, and I have a few feet lying around my shed somewhere.


Great now I can get it localy for my hybrid that I plan to make in the future.
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Unread postAuthor: rna_duelers » Fri Jan 25, 2008 7:51 pm

I like it!Love the three point ignition.Whats the main ammo and the range of it?

You mentioned a video in your first post,will we be able to see it?
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Unread postAuthor: Novacastrian » Fri Jan 25, 2008 8:00 pm

The video can be found in the best shot competition thread mate :P
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Unread postAuthor: STHORNE » Fri Jan 25, 2008 8:02 pm

nice job for your first steel. I like the spark gap set up, like isomer said.

Its such a massive, heavy-duty cannon......it's ungodly.

also, did you salvage the steel pipe? looks used lol.
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Last edited by STHORNE on Mon Jan 28, 2008 8:34 pm, edited 1 time in total.
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Unread postAuthor: Novacastrian » Fri Jan 25, 2008 8:05 pm

Its such a massive, heavy-duty cannon......you should at least consider putting it under hybrids.


But it is not a Hybrid....
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