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A Simple Beginner's Cannon

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 Simple Beginner's Cannon

Unread postAuthor: paragod » Sun Oct 01, 2006 4:32 am

These are some pictures of the first type of spud gun we came up with. I don't know if one like it has already been posted. If so, I apologize.

I made this gun with the standard barrel, but I conected it to a 4" to 2" flush reducer connected to the top of a 4" coupling with a 45 degree 2" cleanout. As you can see, the cleanout is a ready made handle, and a good place to put the ignitor. To place the ignitor, i just put a 2" threaded cap on the cleanout and drilled a 1/2" hole in the top. The grill ignitor fits just right, and with a little sealant, is air tight. I normally just connect the wires to the metal ignitor flange that comes with the ignitor kit, and attach it to the inside of the chamber with epoxy. After that, I used the standard 4" threaded cap to close things up. This model does not have a fan or propane injection, but can be made with about $25 and 2-3 hours of your time. One of the downsides I have noticed is that it is easy to overdo the fuel and flood the small chamber out, causing a misfire. Additionally, try to keep the threads on the back clean and dry, as I have had a few guns with jammed threads due to excess hairspray.


Just as a side note, I found that 2 or 3 of those cheap paper towels that come in bundles make great "wadding" so that you can put just about any size object in a 2" barrel. (I have embedded macaroni and spaghetti noodles in a piece of plywood!) Also, cheap fiber toilet brushes WILL fire out of a 2" barrel, but catch on fire on the way out, so beware of where it lands.

Happy spud gunning!!!!
JW
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Attachments
100_0376.JPG
100_0377.JPG
Note the lack of frills and paint, but this gun has been going for years.

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Unread postAuthor: killagorrila99 » Sun Oct 01, 2006 4:46 am

I Like it, real simple. Reminds me of my first gun exept without a 3 ft long chamber and a 7ft barrel.
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Unread postAuthor: experament_u2 » Sun Oct 01, 2006 5:03 am

nice and simple but i think u should put the ignitor in deeper it will look beter
but other wise thats a nice gun good job :)
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Unread postAuthor: paragod » Sun Oct 01, 2006 12:15 pm

Actually I have the ignitor out to show how I drilled the hole and ran the wires. It sits all the way to the flange when installed. Thanks for the thoughts though!!!!
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Unread postAuthor: dippydodo03 » Sun Feb 04, 2007 8:45 pm

sweet gun. simple but looks fun.
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Unread postAuthor: spudthug » Thu Mar 01, 2007 6:50 am

yea very simple kinda like *oldskool* i like it how far you think it shoots and wat propellent do you use??
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