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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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Unread postAuthor: xtremesocr92 » Wed Jan 17, 2007 10:07 pm

ok heavy metal?

its insanely hard to put natural gas in a certain direction, and it doesn't just come in a cheap little spray can
it comes in huge things that are used to heat houses.
its not good to use
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Unread postAuthor: heavymetalsarge » Thu Jan 18, 2007 11:51 am

Alright I was just curious I might have thought it would have been easier if you had a natural gas BBQ
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if it doesn't involve a loud bang it isn't powerful enough

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Unread postAuthor: garrettee » Thu Jan 18, 2007 2:56 pm

If you have a natural gas barbeque, it's hard lined from your mainline. So how can anybody use it? Did you have some kind of idea?
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Unread postAuthor: SpudBlaster15 » Thu Jan 18, 2007 3:12 pm

Due to it's slower flame propogation rate, lower energy density, and increased difficulty to obtain (in convenient quantities) and meter, natural gas has no real advantages over propane.
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Unread postAuthor: superpapa » Wed Feb 07, 2007 4:16 pm

can i use lp gas
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Unread postAuthor: Pete Zaria » Wed Feb 07, 2007 4:48 pm

superpapa wrote:can i use lp gas


Welcome to the forums.

First of all, most of the "nice" combustion guns around here use propane (or LP gas, short for liquid propane) or MAPP gas (a gas similar to propane, used for welding, burns 10-15% hotter than propane).

Propane is, in my opinion, the best combustion gun fuel because it's cheap, easy to get, clean burning, and powerful. However, propane (and MAPP) are really only effective when you build a meter system (to meter out the correct amount of gas each time, eliminating guess work).

Check out the Combustion Cannon Discussion and Showcase, you'll see lots of guns with propane meters. Here's mine: http://www.spudfiles.com/forums/viewtop ... 666&#57666

PS - if you look around or use the Search tool before asking a question, you can frequently find the answer without posting.

Peace,
Pete Zaria.
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Unread postAuthor: BIKER180360 » Wed Feb 07, 2007 6:32 pm

newkidspudster wrote: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?
it depends on what it is made out of. but if it is a thick enough it wont. what did u make it out of? :P
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Unread postAuthor: crsaz » Fri Feb 09, 2007 5:38 pm

I have a question, How much performance decrease do I get with starter fluid that uses co2 instead of propane or butane for a propelant. I still get
100+yard shot using it but it is all they had at the time I was in a hury and you can't beat the price 99 cents for aa can about the size of a soda can but a little smaller around and twice as tall. I can't recall the size but I think it was somthing 600ml. will I get alot better berformanc with different starter fluid. I am going to use propane, not metered but right now I cant find the torch hed it has been about 4 months since I have seen it. when I was testing my gun around the house with axe or propane shooting a sock it was f@$#ing loud but when I finally went ou to shot it in the desert with starer fluid it was pretty quit kinda like a loud woosh in stead of a deafaning BOOM. does anyone know where to get starter fluid with propane or a similar propelant. the can on mine says co2 and ether are the only ingriedents
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Unread postAuthor: LGM » Sat Feb 10, 2007 5:33 pm

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Unread postAuthor: b1galez » Sat Feb 10, 2007 8:24 pm

crsaz wrote:does anyone know where to get starter fluid with propane or a similar propelant.

I think you could use a pressure proof tank (hardware store) and a normal gas tank (from a gas heater or from a barbecue for ex.); then just use some copper pipes, a compressed air regulator and a manometer to connect the two tank each other to refill the smallest one. Obviously don't go beyond the pressure limit!
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Unread postAuthor: kjb » Sun Feb 11, 2007 6:09 pm

I got a free sample of Old Spice Red Zone Body Spray/deodorant and found that it works very well. Smells nice too :shock: I prefer propane or MAPP but was very surprised with the Red Zone.
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Unread postAuthor: VH_man » Sun Feb 11, 2007 6:31 pm

Ha Ha i used AXE for my mini...... it goes from AXE to Ass...... Phewww
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