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Working Flamethrowers
About this creation
This is my flamethrower which uses ISOPROPANOL as a fuel. It is only capable of a range around 1 ft, but is quite powerful. More experiments would be needed with the fuel to increase the range and effect any further. Range is still be limited by the diameter of the lego tubes. There are interesting design possibilities regarding a longer burst, (this is currently a single-shot weapon), including the use of an air tank...!

I have not continued investigations along this line as the range of the weapon is so limited.

However, it is quite capable of setting fire to paper huts, which was all it needed to do!.

Flamethrower II

This is a PROPER flamethrower. Twin lego cylinders are used to eject the fuel (same as before) from a syringe (from an ink cartridge refill kit). This gives the advantage of a smaller hole (the syringe has a metal end) which can be shaped with a handy pair of pliers..

The same tubing sytem is used as before, but this time the valve connects to two "instant action" cylinders (the old type, only one input). These have a greater csa (cross sectional area) than the syringe, so they give loads of power to force the fuel through the fine nozzle. The flame is 1-2 metres in length and can set fire to stuff in that range. I have two syringes, each in their own holder for quick changes. The ignition flame is provided by a blu-tack mounted candle on the end of an adjustable boom at the front of the flamethrower. This is a parallel wossname, so it moves up and further away from the syringe, or down and closer to it. This allows me to adjust for the decrease in the candle's height as it burns.

VIDEOS. Right click and "save link as". Maybe more videos in the future, but please leave reviews on my MOC pages so that I know if anyone is interested!

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   Flamer II - pic 1 - The end of a flame

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   Flamer II - pic 2 - Lance of fire

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   Flamer II - pic 3 - Fireball caused by incorrectly shaped nozzle

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   Flamer I - Combination picture

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   Flamer II - Side shot showing general form of flamethrower

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   Flamer II - Shot showing the a syringe in its container

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   Flamer II - Top view showing the pistons


 I like it 
  February 26, 2010
Wow, very impressive, I never knew this was possible!
  May 17, 2009
Holy Cow this thing is awsome sooner or later lego creators will take over the WORLD!!!
David Hyman
patrick hafer
  November 25, 2007
its very cool but its to dangerous even with the proper protection.(plus dosent the plastic melt?)
 I like it 
  October 30, 2006
As interesting this Idea is and the usfullness the basic technology could generate(rocket propulsion), I have one thing to ask. Are you a pyromaniac?
 I like it 
  February 4, 2006
 I like it 
  December 19, 2005
This thing is awesome!!! But there one thing. You should say to kids and stuff, "don't try this at home" because they could get there face blown off and sew you. And YES please do more movies!!!
 I like it 
  October 30, 2005
 I like it 
  April 20, 2005
I'm speechless. I feel compelled to write a review because it's so amazingly cool, but I'm too gobsmacked.
 I like it 
  November 24, 2004
Man, this thing is awesome!!!!! To bad I dont have any of that gas stuff, or I would make one to. You should show some pictures of it!!! :)
By David Hyman
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Added October 30, 2004
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