Here is a lovely gasoline flame thrower.

What you need are 2 empty propane fuel tanks (like the kind you use for a torch). The valves are drilled out and and a hose is connected between the two of them. One is filled with gasoline and the other is filled with compressed air. A hole is drilled in the bottom of the gasoline tank and a hose from that is run to the gun. The tanks are attached to straps and worn on your back. The gun is made out of a blowgun (these are used in machine shops and can be found at Fleet Farm) attached to A copper or steel pipe of about 3 feet long. A propane torch head is welded to the pipe so that the gas being expelled ignites. A small propane tank is attached. If you can get high enough air pressure you can use napalm and that is cool because it sticks to everything and burns hot.

If you don't like the idea of shooting gasoline, an idea is to use a propane tank without a regulator. Stick a nail onto the valve to get the propane out really fast. Not to say that either idea is safer...

Suggestions from others like you...

Date: Fri, 11 Apr 1997 From: [email protected] When I was 12 I got a water fire extinguisher of around 3 US gallons, unscrewed the top, took the water out, filled it with petrol, hit the button and chucked a lighter through the spray, wham! Flame-thrower! 14 - 16 foot flame. ultracool. But the problem was turning it full without dribbles and getting burnt. The jet wasn't very fine either. I did this twice and got thrown out of school. My friend Tommy Clarkson did a home-made firework party which consisted of various methods of exploding propane canisters, the best (and nearly lethal one) was to set up little gadget used to launch tin-can targets for skeet shooters, it used a .22 blank to launch a steel can vertically. Tommy put a butane canister on it and set the gadget in a vice, pulled the cord, up it went, we shot the can with steel shot, ka-boom! However, the first two butane cans ruptured on launch with quite frightening results (shards of tin can metal whizz everywhere.

Date: Sun, 11 May 97 From: [email protected] I made similar things when I wasn't as aware of my own mortality as I am now. I've got a few suggestions if your interested. use old fire extinguishers for your fuel tank, larger tanks can handle up to 250psi. the valve body has standard pipe threads for the pressure gauge and nozzle, and it has a siphon tube built in so you don't have to turn it upside down. I also like to use co2 to pressure the tank, this is a safety precaution, when you run out of fuel the last bit of air / fuel spray can flash back into the tank. I also used a torch as the pilot flame, I had tried other things but they wouldn't didn't stay lit or didn't light the fuel. keep a wet blanket nearby in case something goes wrong, gasoline is the worst thing to get burned by, trust me I know.

From: [email protected] (Mike T Mikloucich) Date: Fri, 06 Jun 1997 21:00:38 EDT
I got this new design for a flame thrower out of a supersoker Xp-75. Here is how you make it:
Materials: Supersoker XP-75 Metal Coat hanger Short candle (untapered) Lamp Oil
Procedure:
1 Take coat hanger, wrap around nozzle of gun
2 Insert candle into coat hanger so that wick is directly in front of nozzle
3 Fill water reservoir with lamp oil
4 Pump up squirt gun. Make sure that oil comes out in steady stream,NOT IN A MIST
5 Light candle,pull trigger,have fun

From: [email protected] Date: Sat, 24 May 1997
I would think that a home/garden sprayer,that is,a container with a pump on top and a hose with a "trigger" you pull to make the liquid come out would make a great flame-thrower if the container was filled half-way with gasoline and pumped about 15 times. garden sprayers are sold at most garden or hardware stores and are used to disperse fertilizer or bug spray into your crops. here's my plans (note: I just came up with this today and have not tried it yet)

From: [email protected] Date: Sat, 29 Nov 1997
I have built a flame-thrower as [email protected] said in his email, and it works great. I have gotten up to about a 13 ft. flame, with almost no danger to myself. As a lighting mechanism, I used a small rag soaked in gasoline, then duct taped to the nozzle, such that only a small portion of the rag is exposed. just light the rag and then pump and spray. Also, my friend owns a high pressure sprayer, and I have seen him get up to about a 30 ft. flame on it.

From: [email protected] Date: Thu, 1 Jan 1998 09:17:54 -0800
This is far more advanced and costly use scuba diving tanks unscrew the top of one of them and refit it with a double threaded 3/8 or 1/2 opening. keep the other a scuba tank so filling it with air wont be a problem.grab a hose from a regulator [diving] and attach it to the compressed air tank. take the other end and attach it to the 3/8 or 1\2 threads.now your attached with one set of threads left. go to your local car wash get the high pressure gun and hose attach that to the threaded end now your flame thrower is complete. fill the tank with what ever you want. the pressure is so great it will fire any substance imaginable. remember scuba tanks come in all sizes . you should see the vehicle mounted one I have!!!!!!