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couple of q's about cannon

A place to ask general spud cannon related questions.
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couple of q's about cannon

Unread postAuthor: teledu » Sun Oct 02, 2005 7:08 am

first of all does the potato have to be real tight fit in barrel or can it have a little loose space ? i'm using a bbq ignitor on 2 screws but the hairspray isnt igniting any idea ? thnx for any replies
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Unread postAuthor: spudshot » Sun Oct 02, 2005 7:24 am

you should have a muzzle knife at the end of your barrel, which is nothing more than sharpening your barrel with a file/sander/lathe that way the potato will be cut as it is forced into the barrel, as far as the hairspray, dont use it, hairspray gums up your chamber terribly. the reason its not igniting is either because there is too much fuel, or there is no spark between the screws. ONLY CHECK FOR SPARK IF YOU"RE SURE THE GUN IS EMPTY AND HAS NOT BEEN FUELED
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Unread postAuthor: teledu » Sun Oct 02, 2005 7:54 am

wot would u recommend me using for fuel
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Unread postAuthor: neilman88 » Sun Oct 02, 2005 11:17 am

propane...but i keep it simple and use right guard
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Unread postAuthor: teledu » Sun Oct 02, 2005 1:20 pm

i changed the ignitor to a fire lighter switch which seem to spark on most clicks but it still wont fire so i think i will buy some right guard instead of hairspray
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Unread postAuthor: kevl12377 » Sun Oct 02, 2005 1:35 pm

a lot of the time it wont fire because it doesnt vent properly and u dont have enough oxygen in the chamber. you can install a fan in yours like i did or hold it up to a fan to blow out the vapors. also try spraying in the propellent for a seccond then putting in the potato it pushes the air in the barrel down into the chamber.
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Unread postAuthor: teledu » Mon Oct 03, 2005 10:09 am

i tried with fire lighter ignitor but still no fire so i'm gonna go buy some right guard cos hairspray sucks. And i think my problem might be because i using too much fuel. i'll post after i get some right guard
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Unread postAuthor: kevl12377 » Mon Oct 03, 2005 12:09 pm

i recomen useing Mapp gas and oxygen mixture. It is the 2 hottest burning comericial fules. Used for welding you can buy it at homedeopot.
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Unread postAuthor: boilingleadbath » Mon Oct 03, 2005 3:05 pm

Please don't suggest using oxygen to the newbs... it's not really safe to be playing around with enriched oxygen combustion in brittle plastic pipes.
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Unread postAuthor: teledu » Sun Oct 09, 2005 9:46 am

Good news all it works !! I what was wrong it was amount of fuel so i only put a tiny amount and it shot so YIPEEE!!!! ty for everyones replies
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Unread postAuthor: DriftingRz » Sun Oct 09, 2005 10:30 am

AXE body spray works good
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Unread postAuthor: theregoesthewindow » Sun Jan 22, 2006 8:30 pm

at my local OSH they had these cans of butane!!
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