:?: That engine ran ON liquid air not made it. And you couldn't call the tools used by powerlabs to amature. Even if you could create those temperatures and maintain them, they could cause the materials used for the chamber to become brittle to the point that the act of firing the cannon will almost...

you do realise that the air has to be stored at -194 degrees c you cant exactly make that in your freezer

Or you could just use pringles cans glued together


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jackssmirkingrevenge wrote:very simple to achieve the feed, the complicated bit is getting a semi-auto valve.

Wouldn't a simple solenoid valve work?

People that automatically assume that I like science fiction just because I excel in science class. People that believe that so called "violent" video games will turn me into a serial killer. (Ill get them one day :twisted: ) Indian givers, no I take that back. :P Reality Television Overhyped sporti...

I've got some old anodes from an old pool chlorinator that are made of silver alloy. Apparently the best metals are the most non-reactive ones. Platinum is supposed to be the ideal because it does not react whilst being electrolised.

Those people are crazy. Are you saying that you are completely incapable of anger? Anger is a human trait and biologically engrained into our minds. If someone killed your family would you want them dead? everyone has a breaking point and what might seem a fair punishment to the person who did ill ...

all the instances people are speaking of refer to a crazy person going on a rampage. Are you saying that only mentally unstable humans are capable of "snapping" during an instance of road rage, going to their glovebox and shooting up every person in sight? Perhaps you are incapable of these short b...

How to make a silencer for your spudgun
Are you sure that the hot gasses from the combustion will not melt the plastic in the water baloons?

The attitude the government takes towards anything that burns is quite over the top: a group of teenagers were charged and fined for being in possession of beer bottles full of sparkler flint.

rna_duelers wrote:
Combustion Launchers,Illegal in all forms.Home Made devices not registrable.

A bit strange considering pneumatics are generally more powerful and dangerous (From the end of the muzzle)

http://en.wikipedia.org/wiki/Electrolysis not too sure what the platinum foils do but thats what you should do.

collect the hydrogen and the oxygen at the same time
alternatively you can collect the hydrogen by putting a balloon at the top of the container and it would fill it as hydrogen isn't as dense as oxygen.

I'm at the Sunshine coast QLD. Don't know anyone else who has made anything past a basic combustion

Also: How are you going to stop the piston snapping back while the gasses are still leaving the chamber? I've had a similar idea to this but a) I can't prove it and b) I couldn't see how it was feasible