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2 Liter bottle Cannon

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: cannons-go-boom » Sat Nov 03, 2007 5:57 pm

Without getting PVC what could I use as a decent Chamber?
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Unread postAuthor: Hubb » Sat Nov 03, 2007 6:00 pm

I've never used a coke bottle as a chamber (for safety reasons :D ). I was wondering if there was a way to re-enforce the coke bottle, such as wrapping duct tape around it, to make it stronger, or at least make it safer to use.
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Unread postAuthor: Novacastrian » Sat Nov 03, 2007 6:05 pm

I think it has been shown before that duct tape doesn't reinforce. Maybe a liberal coating of Kevlar would do the trick. (albeit expensive) Anyone got an old bullet resistant vest?
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Unread postAuthor: cannons-go-boom » Sat Nov 03, 2007 6:07 pm

Thats what I was thinking. Because when I do "The Works" Bombs and stuff. Too make a Louder noise I wrap it in tape and it Strengthens the bottle which allows more pressure to build up, resulting in an un-normaly loud noise.
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Unread postAuthor: Hubb » Sat Nov 03, 2007 6:13 pm

Or maybe even find a way to re-inforce it another way, such as wrapping aluminum screening around the bottle.

*This, or course, is for the cannon and not the Works bomb*
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Unread postAuthor: cannons-go-boom » Sat Nov 03, 2007 6:15 pm

lol.

How would you hold the screen tight?
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Unread postAuthor: Infernal Maveric » Sat Nov 03, 2007 6:16 pm

cannons-go-boom wrote:Without getting PVC what could I use as a decent Chamber?


Copper and black iron work well.
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Unread postAuthor: Hubb » Sat Nov 03, 2007 6:17 pm

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Unread postAuthor: cannons-go-boom » Sat Nov 03, 2007 6:20 pm

lol, Zip-Ties always work wonders. :D
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Unread postAuthor: Ragnarok » Sat Nov 03, 2007 7:26 pm

cannons-go-boom wrote:Without getting PVC what could I use as a decent Chamber?

You have a choice between Pressure rated ABS, copper, steel, iron, aluminium and brass, none of which are cheaper or easier than PVC.

Plastic bottles are not a decent chamber. They're an easy chamber that is far too weak. I have used them as chambers, but given what I now know, I would not personally repeat or recommend it.

They do make a good bang if you shoot them under pressure, but the twisted mess that results would put you off using them. I'll get a picture of it as soon as I can.
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Unread postAuthor: mtronic » Sat Nov 03, 2007 8:13 pm

I have used a 2lt coke bottle before up to 140psi but I only took it that high twice. I used it regularly at 80-100psi with no problems, however my bottle did not have the tyre valve in the end as that weakens the system. My tyre valve was in a t fitting.

But seriously make your self a little chamber out of pvc and end caps and save yourself the trouble of needing hearing aids....
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Unread postAuthor: sm1th3rm4n » Sat Nov 03, 2007 9:59 pm

if ur gonna use a soda bottle i recommend wrapping it in like duct tape or something it will add suppord to the walls of the bottle
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Unread postAuthor: thespeedycicada » Sat Nov 03, 2007 10:05 pm

Duct tape will do nothing but make it louder by holding the pressure in longer i have done a test with water bottles wrapped with all sorts of crap and duct tape just makes it louder and makes the fast sharp shrapnel into fast sharp shrapnel with tape on it :roll:
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Unread postAuthor: Ragnarok » Sat Nov 03, 2007 10:16 pm

mtronic wrote:But seriously make your self a little chamber out of pvc and end caps and save yourself the trouble of needing hearing aids....

Or people could combine prevention and protection - in addition to building safe cannons and using them safely (prevention of an accident), they should naturally use goggles and ear defenders (protection from an accident), in case something should go wrong.
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Unread postAuthor: mtronic » Sun Nov 04, 2007 2:03 am

Or people could combine prevention and protection - in addition to building safe cannons and using them safely (prevention of an accident), they should naturally use goggles and ear defenders (protection from an accident), in case something should go wrong.


This would happen in the perfect world....
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