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a fairly small/ basic combustion of mine...

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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a fairly small/ basic combustion of mine...

Unread postAuthor: hi » Sun Oct 14, 2007 10:17 pm

This is my newest and latest cannon. its was built completly of scraps that i have laying around, it did not cost me a single penny. the chamber is a 2'' tee. the barrel is about 16'' of 3/4'' pvc. the chamber is about 8'' long. idealy the barrel would be about 3 or 4 inches longer (just an educated guess, i didnt accually do the math). the ignition is a lantern sparker.

its accually pretty fun to mess around with. the fuel is mapp gas or propane, ive been using mapp gas.


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suggestions/comments welcome.

note- im fully aware of the fact that i used DWV ABS. due to the size of the cannon, i really dont care, so please dont point it out.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: Dornep » Sun Oct 14, 2007 10:28 pm

Thats a really cool setup, nice and clean looking. Some handles would give it a tommy gun look. Maybe a handle below the tee and one attached to the barrel somehow would really set it off. Give it a flat black paint job and you have yourself a street sweeper! :D Would be kind of hard to twist the sparker with both hands on handles now that I think about it.. :?

Overall Very Nice!
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Unread postAuthor: Novacastrian » Sun Oct 14, 2007 10:35 pm

Very nice, kind of reminds me of my "Garbage Gun"
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Mine is a lot smaller by the look of it- you should get some decent power out of it. :P Do you know how much fuel you need? Mine needs 2cc of butane.
Nice :)
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Unread postAuthor: hi » Sun Oct 14, 2007 10:42 pm

Do you know how much fuel you need?


umm, i just open up the torch head and spray it in for about 1/2 second or so. i didnt even try to messure the fuel, but i it worked on the first try, so im happy.

thanks for the comments, im accually pretty happy with it. it almost looks like i planned to make it...

originally i was going to use a bbq ignitor and make a handle for it, but i put the sparkers to far apart, so i just made a big hole and put the lantern sparker in.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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hi
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Unread postAuthor: MrCrowley » Sun Oct 14, 2007 10:54 pm

hi wrote:
Do you know how much fuel you need?


umm, i just open up the torch head and spray it in for about 1/2 second or so. i didnt even try to messure the fuel, but i it worked on the first try, so im happy.

thanks for the comments, im accually pretty happy with it. it almost looks like i planned to make it...

originally i was going to use a bbq ignitor and make a handle for it, but i put the sparkers to far apart, so i just made a big hole and put the lantern sparker in.


Haha yeah I never stick to my original desgin.

Nice plinker, makes me wanna build one now.
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Unread postAuthor: Dornep » Sun Oct 14, 2007 10:56 pm

Forgot to ask but have you destroyed anything with it yet? :twisted:

If so could we get some damage pics or maybe a video? :)

Oh yea what do you use as ammo?
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Unread postAuthor: hi » Sun Oct 14, 2007 11:04 pm

the first time i shot it was tonight and i was just shooting some aluminum foil that i rolled up into a ball. i dont know that it really has the power to "destroy" anything. ill have to get some potatos tomarrow. if i feel its powerful enough ill post pictures, but i dont have a camera to post a video.

i dont think i have the mixture perfect yet, but when i do im sure it will have decent power. the foil only went about 150 feet or so, but im sure a potato will go farther.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: Rogue » Mon Nov 05, 2007 10:32 am

nice hi. looks very very clean. i like it :)
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Unread postAuthor: foothead » Sat Nov 10, 2007 12:04 pm

I have one kind of like that. I shot a jawbreaker and dented the solid brass bell on my treehouse. I bet it has a lot of power.
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Unread postAuthor: hi » Sun Nov 11, 2007 11:59 pm

foothead wrote:I have one kind of like that. I shot a jawbreaker and dented the solid brass bell on my treehouse. I bet it has a lot of power.



ive been shooting this quite a bit lately and it is really loud. i used a 3 layers of aluminum foil as a burst disk and it was probably as loud as a shot gun.

it can shoot a marble through a soda can. maybe tomarrow ill get some damage pics up.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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