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Metal Piston-Valved Cannon

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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Unread postAuthor: noob of noobs » Sun Aug 26, 2007 3:15 pm

15$? Is that in USD? Holy crap... I think I might have to stick to steel for now, but I do want to make a copper gun when I get the dough. By the way, does your piston ride in the nipple behind the T?
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Unread postAuthor: joannaardway » Sun Aug 26, 2007 5:00 pm

noob of noobs wrote:15$? Is that in USD? Holy crap... I think I might have to stick to steel for now, but I do want to make a copper gun when I get the dough. By the way, does your piston ride in the nipple behind the T?

That's not a lot at all... in the UK, a 54mm (Essentially 2" ID) tee costs £9.23 before tax, £10.85 after - and that's about $21/$22. And that's off the internet, before a hefty delivery charge. And it will be nearly impossible to solder as well.

For an idea of the cost of a full UK cannon...
He's not supplied me with all of the data, but for Ragnarok's latest cannon (this is a 20.3mm bore), the running total is about ~£300 ($600) for both it and the homemade pump to accompany it. For the launcher alone entirely from scratch, you just might get away with half that.
It's a pretty nice launcher, I'll give him that, but given that some US builders will baulk at a quarter of that for a cannon, you should consider yourselves very privileged.
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Novacastrian: How about use whatever the heck you can get your hands on?
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Unread postAuthor: rednecktatertosser » Sun Aug 26, 2007 5:18 pm

Yeah, its true, in the good ol USofA we have it relly god as far as plumbing supplies go.

On topic: Looks good on the cannon, You used the epoxy for a piston right?
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Unread postAuthor: noob of noobs » Mon Aug 27, 2007 6:30 am

21$ for a 2" T? Wow, that's gotta hurt the wallet. Sorry for balking at nothing, it's just my budget's fairly slim if you know what I mean. :roll:
Rednecktatertosser, he said the piston was made of 2 3/4" PVC caps glued together.
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Unread postAuthor: joannaardway » Mon Aug 27, 2007 3:59 pm

noob of noobs wrote:21$ for a 2" T? Wow, that's gotta hurt the wallet.

We just have to recycle old cannons and parts (copper unsolders, but PVC can't unbond), make a few less cannons, gather a bit more budget and plan a bit more carefully - or nag our parents for more cash.

You're working in one situation, so your budgeting ideas will be different.
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Novacastrian: How about use whatever the heck you can get your hands on?
frankrede: Well then I guess it won't matter when you decide to drink bleach because your out of kool-aid.
...I'm sorry, but that made my year.
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