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second combustion gun

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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second combustion gun

Unread postAuthor: nibbler125 » Sun Jan 26, 2014 1:09 am

Ok so I took a break from spud gunning but now I decided to come back and what better of a way then with an over under design. The gun is made with sch 40pvc and I also used some wood for reinforcement to stop flexing and provide for handles.

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Specs...Barrel is 2" bore and is 5' long. Combustion chamber is 3" bore and is 2' long.

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I made the box out of hobby grade plywood, It houses a rechargeable battery and the switch used to power the chamber fan, Note the light only comes on when the fan is running

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This being the inside of the gun, it uses dual spark, one on each end of the combustion chamber and a fan between them. The whole unit is removable with one screw to be serviced and the wires entering the chamber are a tight fit and have been glued in place to prevent leaks

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The ignition here is a simple piezo ignitor with a nice handlebar grip to cover the copper tube its housed in

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Front handle, not much to say, It balances quite nicely and can be carried around one handed


My final notes, This has turned out to be a very nice gun it seems to shoot with quite a bit of power and is still compact, clean and is made well. I really like the over under style too, it handles very nicely and is easier to aim then I originally thought.
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Last edited by nibbler125 on Thu Oct 09, 2014 3:00 pm, edited 1 time in total.

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Re: second combustion gun

Unread postAuthor: mark.f » Sun Jan 26, 2014 6:33 am

Looks great! Nice simple combustion gun. Do you use propane/butane or is this a spray n' pray?
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Re: second combustion gun

Unread postAuthor: Labtecpower » Sun Jan 26, 2014 6:57 am

I've spotted some DWV parts :P

Other than that, nice gun! :)
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Re: second combustion gun

Unread postAuthor: jackssmirkingrevenge » Sun Jan 26, 2014 7:54 am

Shineh! props for the toggle switch :D
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Re: second combustion gun

Unread postAuthor: nibbler125 » Sun Jan 26, 2014 11:07 am

mark.f wrote:Looks great! Nice simple combustion gun. Do you use propane/butane or is this a spray n' pray?


Its spray and pray at the moment but there is lots of room to put a propane injection system in.
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