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5 gallon water bottle chamber

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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Unread postAuthor: c19o » Thu Dec 13, 2007 8:12 pm

I made one with a 5 gal. jug and 5ft of 2" PVC, it worked fine. I wouldn't trust it too much though. It fired about 12 shots or so at night :D . The chamber was on the ground when I shot it off and it bounced up like 6", scared the hell outa me.
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Unread postAuthor: bigbob12345 » Thu Dec 13, 2007 8:19 pm

Okay I just went on to burnt latke and used there rat calc thing and discovered That the barrel would have to be ~30ft long if you used 2in pipe to get a moderately good ratio of 1:1 And the barrel would have to be 200in long to get a ratio of .8:1 if you used 3in pipe for the barrel :shock: I mean I expected it to be long but not that long if you want you could make the barrel that long but I would go for something more like a 2:1 ratio instead even though it woldnt be at maximum strength it would still be extremely powerful :twisted: And would be one hell of noisemaker.Where ear protection when lettig it off and again dont be anyware near it.
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Unread postAuthor: *5*STAR*GENERAL* » Fri Dec 14, 2007 12:31 pm

the mythbusters use 50psi to start then whant up to 130psi . it didint go very far but the barell exuaster that u may fit on it can add an extr kik... try no to get the ones with the handle. the dead space by your triggering device might cause hige back fire/ recoil and poor preformance.
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Unread postAuthor: Eddbot » Sat Dec 15, 2007 12:35 pm

oops, i forgot i started this post and just remembered it today. so... i need a really long barrel, gotta hack off the nozzle and figure out a way to attach the barrel, get earplugs, find a giant launch space, and then get some really long electrodes... sounds like fun! :)

what if i just sprayed my fuel in the nozzle and covered it with plastic wrap then fired would it just be an airborne fireball? :violent3: or an explosion waiting to happen? :bom:
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Unread postAuthor: ALIHISGREAT » Sat Dec 15, 2007 1:40 pm

bigbob12345 wrote:Okay I just went on to burnt latke and used there rat calc thing and discovered That the barrel would have to be ~30ft long if you used 2in pipe to get a moderately good ratio of 1:1 And the barrel would have to be 200in long to get a ratio of .8:1 if you used 3in pipe for the barrel :shock: I mean I expected it to be long but not that long if you want you could make the barrel that long but I would go for something more like a 2:1 ratio instead even though it woldnt be at maximum strength it would still be extremely powerful :twisted: And would be one hell of noisemaker.Where ear protection when lettig it off and again dont be anyware near it.


sounds like you need a 4" barrel 8) or you could fill the bottom with something to keep the volume down, i suppose you could do it to the top aswell and epoxy the barrel in but kind of fill up part of the chamber aswell
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