Cheap Combustion Gun. :)

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
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Redcoat
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Mon Jun 25, 2007 7:30 pm

hi all,

i made this combustion gun out of scraps left over from making my bbmg.
It has absolutely no electronic ignition just a hole which you spray in and then light.

It fires marbles and batteries wrapped in cotton and chunks of 'tater.
The "endcap" on the back is a block of wood and the "reducer" to the barrel is the top of a coke bottle.


It's fuel is a mixture of Hairspray and two different brands of deodorant.For optimum power i put in a second burst from each can and that was the best mixture i came up with.


[youtube][/youtube]

edit- sorry about the bad quality :oops:
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this is it with its fuels around it.
this is it with its fuels around it.
Poo.
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paaiyan
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Mon Jun 25, 2007 7:34 pm

Well my first reaction is that the C:B ratio is way out of whack, bet you get a nice bang with it yea? And I'm assuming that your ghetto-rigged reducer is sealed with epoxy and duct tape? I wouldn't trust that thing as far as I could move it with my mind, and I haven't mastered that yet, so that's not very far.

EDIT: And you're igniting it through a hole in the side? That always scares me. Man I'm not trying to put down your gun, it just doesn't seem entirely safe to me.
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Redcoat
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Mon Jun 25, 2007 7:46 pm

well i've fired it about 80 times now and it's never exploded or anything.And the reducer is sealed using a Hot Glue gun and so is the back chunk of wood as well as taped on.I'vealways made my combustions like this and i've never been hurt nothing ever gone drastically wrong.i just know from expierience with shitty ghetto combustion guns :D
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