You can make a real jet engine for five minute's work and the price of a spoonful of meths - how cool is that?!?

I doubt there's a better way to re-use all those jars under the sink. Much more fun than a trip to the bottle bank.

Step 1: Materials and equipment.

Stuff I had lying around:

> Pasta sauce jar

> Matches or a BBQ lighter

> A hammer

> A screw (it should have been a nail, but what the heck).

> A tin tray

Stuff I had to buy (and the stuff that has caused the most confusion in readers):

> Meths

Would it work if I used an empty paint can?
<p>It's definitely worth a try, but be very careful not to lean over the can as you light it, just in case the lid comes off at speed:</p><p><iframe allowfullscreen="" frameborder="0" height="281" src="//www.youtube.com/embed/4UYRv7TTeF8" width="500"></iframe></p>
<p>Really cool build, Kiteman...</p><p>Will it be a good idea to build one from deodorant cans with continuous fuel supply...? I have plans to build one XD</p>
<p>Nice work.....</p><p>I would like to ask how many minutes does it take for the flight and how much distance covered with the fuel full?</p>
<p>I'm afraid that this doesn't actually fly, it lacks the thrust. </p><p>Running time varies, but is usually around a minute.</p>
<p>Do you think it will work with a bottle too? It could be an easy way to break the bottle after engraving a groove to make a glass, but it probably smashes...</p>
<p>It depends on the bottle - if it has a short neck, it might.</p><p>Give it a try - the worst that could happen is that you make an alcohol lantern.</p>
<p>All right, I'll let you know :-)</p>
is alcohal fine <br>
Whiskey, rum, vodka, pure alcohol should all work.<br><br>Beer, cider, they do not contain enough alcohol to burn.<br>
how to make it <br>
The alcohol? Ferment some, then distil it. <br> <br>The jet? Scroll up...
how to make it <br>
how to make it <br>
how to make it <br>
I drilled a hole in the cap of a 500ml Lucozade bottle around 8mm hole diameter. Then put in enough meths so that when you give it a shake, it just about coveres the inside of the bottle. I laid it on its side, put a flame to the hole and it went blasting off about 10 meters! <br>These engines were used in the V1 and V2 rockets by Germany. They would calculate fuel consumption and put exactly enough fuel in so that it ran out over London and the warhead would plummet down.
So what exactly is a Meth?
&lt;em&gt;Meths&lt;/em&gt; is actually methylated spirits - please read the rest of the comments.
&lt;em&gt;Meths&lt;/em&gt; is actually methylated spirits - please read the rest of the comments.
Could you use rubbing alcohol?
If it's flammable, then yes.
Thanks. <br>
pretty cool, but I'm concerned about the potential glass shards being scattered IF it was to explode. <br>perhaps use a tin can or at least tape the glass container. so that it may break but not harm anyone. <br> <br>nice guide though.
They don't explode - the big hole in the top means they can't build up enough pressure to do that. <br> <br>The reason they break is because the temperature differences across the thickness and height of the glass causes fatal fractures.
still not worth the risk too much meth is being used. <br>i am not saying your project is flawed, I'm giving a heads up to those new to it.
If you want safety, rub the bottom of the jar on the sidewalk and suspend the whole thing from a cord. That way the bottom will blow off without causing any frags.
Hey, it's cool. <br> <br>Everybody should assess their own risks, and if my project is too much for you, I'm not insulted.
where did you git the Meths? <br>
You'd need to ask your parents to buy it. See other comments for suppliers.
Have you tryed using this to propel a model rocket? ( Or other mode of transport?)
No - the burn cycle it very sensitive to symmetry, and tends to stop when you lay the jar on its side.<br><br>I do keep meaning to try adding an absorbent pad to hold fuel at the bottom of the jar to see if it works in its side then, so maybe you'd like to experiment for me?
I suspect that it is the air fuel mix that is killing it when you lay it on it's side. Try putting your hole near the top of the jar instead of the center and see if that works for you.
According to what I've read*, the burn needs to be symmetrical to be successful. <br> <br> <br> <br><sub><sub>(* Which isn't much)</sub></sub>
is there a way so it doesn't brake at the end?
i keep mine water cooled and also wrapped the glass in duct tape so if it does break its easy to clean up without getting cut. you can also just drill a hole in a can of broth and just use that.
That was my thought on using a metal can as well. A beer can or soda can pierced from the bottom instead of &quot;Popping the top&quot; should work as well. If you can find a way to pull the bottom into a cone shape that should also give better results if your wanting even negligible thrust. If you are using a metal canister you should also be able to lay it on it's side. More important than the shape of the flame is the air to fuel mixture you are obtaining.
Some people recommend standing the jar in cold water, but I would like, one day, to make a metal version, maybe with water flowing round heat-transfer pipes...
Have you looked up the heller/lockwood version of the valveless pulsejet? That version uses a u shaped arrangement of the tube with and expanded combustion chamber to set up the harmaonic combustion pulse. one guy ran a gocart on one of these things using propane as a fuel.
Ya I remember SRL (Survival Research Laboratories) did a pulse cart back in the 90's. The pipe was glowing bright orange-hot right behind his head if I my memory serves well ... was insane looking!
or possibly have a undamaged lid freeze the jar with the meths inside and then swap lids? but then again it might get hot fast and break sooner
I haven't tried this specifically,<br> but just as a reference to something I have done, unintentionally,<br> Rap a jar containing a candle in a cold, wet rag. The glass breaks pretty quickly,&nbsp;large cracks, some shattering, the works. so i'd assume that cold liquids, of any kind, with hot glass is a no go.&nbsp;
about to go try this with a beer can replacing the jar, thet way it cant smash and the hole is a pretty good size anyway.
Here is an idea. Instead of &quot;Popping the top&quot; on the beer can, sacrifice one by popping a small hole in the bottom of the can instead. If you don't want to waste the beer use a soda can instead.
Oh! Let us know if it works, plus all the details - brand of beer, ~~flavour and alcohol content,~~ dimensions of can, dimensions of the hole, type and volume of fuel... ... and how about a video as well?
I wonder if it work with a pop can. Or would the hole be to big.
I tried once, it just went woosh.
Although, you can get taller, narrower cans these days... <br> <br>If you try it, let me know what happens.

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