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The cheapest fuel

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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The cheapest fuel

Unread postAuthor: thedub88 » Sun Dec 10, 2006 3:09 pm

I'm new to this site, and been reading alot of the posts. I haven't heared of anyone using gasoline. Me and a friend made a couple of tater guns and found hairspray and axe sucks!! Gasoline is the way to go!!. We filled a spray bottle with gas, only $.52.

We are useing 2 one inch thick boards as a back stop. We pushed the barrel through a 2 inch piece of dence construction grade styrafoam then screwed a 4 inch long bolt with a head that is 1 1/8 inches wide into it. With hairspray or axe the bolt bounced off the board, but with gasoline the bolt went almost all the way threw the board!!! So much power.

We also found that gas doesn't evaporate fast enough when it's 30 degrees, so we put the spray bottle into boiling water.
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Unread postAuthor: mindtrickonu » Sun Dec 10, 2006 3:30 pm

buy starterfluid bulk online for 86 cents a can .... starter fluid (ive found) is more powerful than gasoline ... and it doesnt leave an icky residue
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Unread postAuthor: thedub88 » Sun Dec 10, 2006 3:43 pm

tried starter fluid doesn't work. It has co2 in it and it displaces o2. just wont fire
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Unread postAuthor: King_TaTer » Sun Dec 10, 2006 3:45 pm

wow gasoline just seems like your half-a55ing to me. if you want power without the mess use propane... duh
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Unread postAuthor: SpudBlaster15 » Sun Dec 10, 2006 4:08 pm

If you can't get starting fluid to work, chances are you are adding WAY too much. You only need a .5 second spray for an average sized chamber.

Gasoline is a relatively poor fuel in comparison to other commonly available fuels. It is designed to burn slowly, as to prevent an internal combustion engine from pounding itself apart. Starting fluid will give you MUCH higher performance.
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Unread postAuthor: frankrede » Sun Dec 10, 2006 5:15 pm

cheapest fuel, minus the setup, Propane.
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Unread postAuthor: SpudStuff » Sun Dec 10, 2006 5:24 pm

[sarcastic] You are all wrong! You need all the propane in the bottle for a good shot. Because remember, more fuel makes a bigger bang! Then you screw on your "pressure rated" cleanout cap and push the ignitor! The potatoe flies like 1/2 mile before landing perfectly intact for you to find! [/sarcastic]

No really. Gasoliene is a horible fuel. And yes actually some companies have changed the propellent to CO2.
The best arosol fuel I have found is "Oust". It burns well, dosn't gum up the chamber, and smells good!
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Unread postAuthor: SpudBlaster15 » Sun Dec 10, 2006 8:07 pm

Despite containing a CO2 based propellant, starting fluid is still the most powerful fuel, aside from a metered propane or Mapp system. Most contain about 5 pecent by volume. That is not very much, and doesnt seem to affect performance at all.
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Unread postAuthor: experament_u2 » Sun Dec 10, 2006 9:01 pm

im a butain man because it is rely rely cheap only a cople of bucks at bunnings and it burns clean and powerful
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Unread postAuthor: frankrede » Sun Dec 10, 2006 10:18 pm

Isnt butane hard to meter?
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Unread postAuthor: jjjd » Mon Dec 11, 2006 5:21 pm

I found it wasnt, i just sprayed in for 2 secs and it was good
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Unread postAuthor: King_TaTer » Mon Dec 11, 2006 5:32 pm

well ya but you are just eye-balling it. you never no if you are harnessing the maximum power butane can put out. butane is a very stable fuel and will burn clean and effective, not a bad choice.
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Unread postAuthor: jjjd » Mon Dec 11, 2006 5:50 pm

thats true but it works
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Unread postAuthor: Gorillajoe » Mon Dec 11, 2006 6:11 pm

Eat Beans, use Methane... :lol: :lol: :lol:
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Unread postAuthor: newkidspudster » Mon Jan 01, 2007 1:40 am

Dude i use hair spray in my mini i think other fules might be to powerful for it its so tiny i dont want to break it.Will it break with more powerful fule?
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