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A very sturdy mini-combustion

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 very sturdy mini-combustion

Unread postAuthor: dannystruff » Sat Mar 17, 2007 10:27 pm

First post but far from my first cannon. Hope you like it. PEX tubing chamber with coke bottlecaps closing each end of the tube (the mouth of the bottle was cut off and fits around the PEX, both caps screw on and off) one for the vent one for barrels. Piezo ignition, and bic pen barrel. Very sturdy construction everything is an extremely snug fit. I fuel it with a modified lighter, i removed the top of the lighter and spun the flame regulator to allow for faster release of butane. Also attatched rubber tube to the nozzle so i can be sure the fuel goes into the chamber. At the setting i have 2 seconds is the perfect fuel ammount. Using this method its very hard to flood the chamber with fuel. This thing fires more consistantly than my full size combustions. Also I have attatched a damage pic of my leg which was shot with a paper spitball. Ouch!

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Unread postAuthor: willarddaniels » Sun Mar 18, 2007 2:02 am

That is pretty cool. Nice little cannon to dink around with.
I really like how you managed to find that the pex fits snugly inside the bottle openings- that makes it very accessible and more like a true mini.
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Unread postAuthor: ewohkoda » Sun Mar 18, 2007 3:11 pm

thats awesome um... what is PEX and where could i get some?
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Unread postAuthor: ewohkoda » Sun Mar 18, 2007 3:28 pm

ok um i figured out wat it is but what size PEX did you use?
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Unread postAuthor: crazyfreak0075 » Sun Mar 18, 2007 3:30 pm

wow a paper spit ball did that to your leg. GG with the gun, Keep up the mediocre work!!!! :)
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Unread postAuthor: dannystruff » Sun Mar 18, 2007 6:20 pm

Pretty sure I got the PEX from Home Depot. It's 3/4 inch but you have to sand it down a bit so it fits, then use a rubber mallet to push it all the way in.
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Unread postAuthor: dannystruff » Sun Mar 18, 2007 8:47 pm

Just converted this gun to a hybrid, but havent tested it yet...I dont have a pump but I cant wait.. I'll post new info and pics in a couple days. The idea hit me all of a sudden and the conversion only took 5 minutes!!
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Unread postAuthor: ewohkoda » Mon Mar 19, 2007 6:26 pm

Okay tyvm, what did u use to seal the bottle heads onto the PEX?
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Unread postAuthor: ewohkoda » Mon Mar 19, 2007 6:58 pm

or is it just a snug fit?
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Unread postAuthor: dannystruff » Mon Mar 19, 2007 7:37 pm

It's extremely tight. As I said I had to sand the ends down slightly and use a hammer to get them to slip on.
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Unread postAuthor: ewohkoda » Mon Mar 19, 2007 8:37 pm

okay thanks again im gonna try makin one this weekend probably
and definately add some pics of the hybrid version, and plans 2 do it plz :wink:
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Unread postAuthor: ewohkoda » Mon Mar 26, 2007 7:08 pm

ok uhm... i tried to make one today and yesterday. i say tried because its actually not that great itsself. I couldn't find any PEX at home depot so i used this 1/4 inch pvc, which was ok but I think i just messed up the c:b ratio... just needs some tweaking... :x
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Unread postAuthor: pyromaniac » Mon Mar 26, 2007 7:17 pm

The legs looks like soemones stomach with that little dent. Great mini. NO pill bottle! YAY!
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