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WHY WONT IT WORK

A place to ask general spud cannon related questions.
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WHY WONT IT WORK

Unread postAuthor: nabu92 » Sat Jan 21, 2006 7:15 pm

i just made my first combustion chamber spudgun, and it wont ignite! ive been trying to ignite it with my camera flash igniter and bbq igniter for 3 days. this is my 3rd bbq igniter,they always work when theres no gas in the chamber,but wen im ready to fire,it doesnt work,same with my camera flash igniter.i use a 1 sec spray of rightguard deoderant as my fuel. HELP! :twisted: :twisted: :twisted: :twisted: :twisted: :twisted: :twisted: :twisted: :twisted:
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Unread postAuthor: crazy jap » Sat Jan 21, 2006 7:31 pm

how can u say that you know that it works when theres no fuel inside it when u cant even tell if its sparking when there is fuel in it. truthfully i think either u have to much or to little fuel. that tends to be the hardest thing to overcome in a new cannon
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Unread postAuthor: nabu92 » Sat Jan 21, 2006 7:37 pm

on my camera flash igniter,after theres a spark and u hit the reset switch u cant hear anything,but when there is no spark and u hit the reset switch,there is a big bang....and i tried diff. ammounts of deoderant,but it still wont work
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Unread postAuthor: saladtossser » Sat Jan 21, 2006 8:03 pm

spark: yes or no
if no, repaire spark
if yes, is chamber well vented after each try?
if no, vent ur friggin chamber
if yes, try varying amount of fuel sprayed
if it is weak, check for leaks in chamber and barrel, and fix it, also vary ur fuel.

if all else fails, try propane metering.
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Unread postAuthor: nabu92 » Sat Jan 21, 2006 8:07 pm

lol..i blow into the chamber for 2 mins to vent it. i guess ill try propane 2morrow, does the propane from welding torches work better than the propane in coleman lanterns? :?..i think im usin 2 much or 2 little fuel
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Unread postAuthor: nicholai » Sat Jan 21, 2006 8:41 pm

same stuff, also called LPG liquified propane gas.

most common canisters are the coleman lantern canisters(shorter fatter can, 2 more oz than long torch can) AND the redi-mate torch canisters (2 oz lighter, longer can)
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Unread postAuthor: darkpyro » Sat Jan 21, 2006 9:36 pm

nabu
i have had the same prob as u the sprker wont spark with feul in there and will spark if there is know fuel i have found that this is because when you spray your right gaurd or deoderant in it gets on the ends screws or wires or whatever and makes it so the spark wont work so i always put my sparker in the end cap to make sure the wires the spark jumps between does not get stuff on them and know my cannon fires every time so try that and tell me if it works.
:D hope you understand
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Unread postAuthor: nabu92 » Sat Jan 21, 2006 10:03 pm

i think ur right, ill try it 2morrow, thanks 4 the help
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