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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captaincrash17
- Private

- Posts: 12
- Joined: Mon Dec 01, 2008 9:49 pm
Tue Dec 16, 2008 11:41 pm
This is my first combustion cannon i made a few years back.
Specifications:
Barrel: 36in 2in diameter sch40
Chamber: 14in 3in diameter sch40
Ignition: Lantern Sparker
Fuel: Hairspray
thanks
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Cosmic Muffin
- Specialist 2

- Posts: 275
- Joined: Mon Jan 14, 2008 10:30 pm
- Location: arse end of nowhere
Wed Dec 17, 2008 12:31 am
good one for a first
whats all the duct tape for?
dont tell me thats all thats holding it together
jelous of your ignitor

i cant find them anywhere
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Xxplosive42o
- Specialist

- Posts: 134
- Joined: Tue Dec 09, 2008 5:57 pm
- Location: Los Angeles, Ca.
Wed Dec 17, 2008 2:20 am
It's great for a first time build! My first attempt was when I was about 14 years old and it was complete garbage.
You said it was a few years back? Have you been building since?
*P.S* Like the other boys said, I really hope you used pvc cement and primer. Dear God.

" Forget about all the reasons why something may not work. You only need to find one good reason why it will. "
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starman
- Sergeant Major


- Posts: 3027
- Joined: Wed Dec 12, 2007 12:45 am
- Location: Simpsonville, SC
Wed Dec 17, 2008 3:23 am
Cosmic Muffin wrote:good one for a first
whats all the duct tape for?
dont tell me thats all thats holding it together
jelous of your ignitor

i cant find them anywhere
You find them in camping centers where you buy lanterns and camp stoves, tents, etc. Here in the States that's lots of places, Walmart, sporting goods shops, etc. Not sure how that would relate to Aussie land though.
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captaincrash17
- Private

- Posts: 12
- Joined: Mon Dec 01, 2008 9:49 pm
Wed Dec 17, 2008 10:24 am
Yeah i got the lantern sparker at Campmor don't no if they have those outside of NJ. Its not held together with duct tape i pvc cemented it, thought it might help keep the cannon airtight? I am hopefully going to building a advanced combustion if a few weeks.
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Cosmic Muffin
- Specialist 2

- Posts: 275
- Joined: Mon Jan 14, 2008 10:30 pm
- Location: arse end of nowhere
Wed Dec 17, 2008 8:45 pm
haha mate you are wasting precious tape
if you cemented it properly then ther should be no leaks or gaps at all.
just make sure you put a good amount a glue on it.
and i rekon you should just use this one for your advanced gun. cos you have already started

just get a new cleanout cap. and you have the starts of something new.