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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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Unread postAuthor: Rambo » Sat Jan 21, 2006 4:40 pm

That's my full auto mini gun. 8)
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Unread postAuthor: Rambo » Sat Jan 21, 2006 4:44 pm

With out the chamber.
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Unread postAuthor: Rambo » Sat Jan 21, 2006 4:52 pm

I'm sorry for the duble post.It gave me error and....and i didn't know that it won't be a reply, :oops:
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Unread postAuthor: Urban Ninja » Sun Jan 22, 2006 7:32 am

Sorry if im being ignorant but I just cannot figure out how it works? Cos it is combustion isnt it?! Nice gun though :D .
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Unread postAuthor: Rambo » Sun Jan 22, 2006 9:25 am

The tube wich is up is the magazine.There are the balls.In the front handle is the ignition(it gives a continius spark write in the comb. chamber), you can see the battery.The pipe coming out of the combustion chamber is for the air.In the camber there are 20ml of alkohol.Whin I push the triger the fuel (not all ofcourse) burns and a ball is fired.Another ball quikly take it's plase.The air already riched :idea: the mixijure and the alkohol ignite's again.And the proces repeats until it run out of air.With 5L of air it can fire about 20-30 I didn't count them....
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Unread postAuthor: saladtossser » Sun Jan 22, 2006 2:32 pm

simple drop in the chamber design
what kind of pipes are those?
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Unread postAuthor: Rambo » Sun Jan 22, 2006 4:09 pm

The walls of the pipes are 3mm tick.The gun don't overheat so it's not inportant what is the material.
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Unread postAuthor: Urban Ninja » Sun Jan 22, 2006 9:20 pm

Oh right I get it now :D , thats a relly good idea. Any chance of a video? I really want to make one, do you think zippo lighter fluid is alright instead of alcohol :?: . Do you have anything blowing in to the pipe to ventilate it or does it do it naturally? Sorry for all the questions but this design is PERFECT for my thompson gun. Thanks a lot and great design :D :D !
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Unread postAuthor: Rambo » Mon Jan 23, 2006 2:21 am

Ofcourse it's not naturaly ventilated, why else should I insert comprest air in to that shlank coming out of the combastion chamber?.I think that the alkohol is the best fuel because it can be between 7,5% and 37%(for metanol) to ignite.The nossle for the air shuldn't be very big or it may turn in to a rocket motor :D :D .
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Unread postAuthor: Urban Ninja » Mon Jan 23, 2006 3:21 am

Thanks a lot. I gave you a ten for being the first combustion auto Ive ever seen. Last question :P what gives it a continuos spark, is it a stungun or is it a homemade device? Thanks! :D .
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Unread postAuthor: CS » Mon Jan 23, 2006 3:29 am

Auto-Combustion? If so we need some diagrams, cause I cant see crap in those pics. Rambo I also fixed your posts. You triple posted the gun so I had to delete one and merge the other two, very aggrevating.
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Unread postAuthor: Rambo » Mon Jan 23, 2006 11:33 am

The spark is from a "kotlon"(=cooker or hot plate or brazer i don't know just the right word) ignitor.It is very unrelaible.The spark is big as from a piezo kristal.
I just tried it again, you better don't use in non ventilatad room.Yesterday it didn't wan't to egnite with acetone.
the wires should be tick or during the time they'll become a crap.
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Unread postAuthor: darkpyro » Mon Jan 23, 2006 7:19 pm

okay sounds great but im still lost the pics are cr@p please add diagram or somethin :?
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Unread postAuthor: Rambo » Tue Jan 24, 2006 2:41 am

I hope that's a diagram.
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Unread postAuthor: darkpyro » Thu Jan 26, 2006 6:12 am

nice good diagram but do you just have alchohol sitting in the bottom and hope it dosn't all light and blow up???
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