any Gasoline powered guns?

[The Last American Hero]

I've seen that trick where you put a teaspoon of gas in a 2 liter plastic bottle and it sends it off pretty good.

How about a hybrid of an airgun and firearm where you compress a fuel/air mixture and use that to fire a projectile.

Technical problems I see are:

1)Will the projectile be able to seal well enough in the time between pressurizing and you deciding to pull the (spark plug) trigger?

2)If "no" for #1, would a flap-valve work? (something that would hold the pressurized mix, but would open under the pressure of the explosion)

3)Could it be semi-auto (or full-auto...maybe even legally) using excess explosive energy to compress the next charge)?

There has been some work on guns with "Caseless Rounds" but they are all solids. IIRC there has been some research into artillery with liquid or semi-liquid.

Yes, I've seen those UN-pressurized Potato Cannons, often with clear plastic barrels. I'm pretty sure a compressed mix will be a whole diff animal. Might need to compress SLOWLY so as to allow cooling so it doesn't "diesel" unexpectedly (and that would allow for much higher compression that ICE (internal combustion engine).

[Untamed1972]

I think you'd have to go with something along the lines of #2 because you'd have to pressurize your air fuel mixture while holding the projectile in place.

Or you'd have to have a mechanism the push the projectile back like a piston to pressurize the air fuel mixture then release it as the fuel is ignited.

[Canucky]

Aerosol potato gun.

[Pyrite]

HUNGARIAN GOOSE GUN!!!!!!

Now pay attention because you won't be able to google this.

Take 4 soup cans
Cut the ends out
Tape together with duct tape in a tube
Take ONE poptop ALUMINUM can and remove the poptop
Tape it to the can tube with the pop hole inside the tube.
Punch a small hole in the side of the bottom of the poptop can (about screwdriver size)
Squirt LIGHTER FLUID....(never tried and WON'T try gasoline) into the punched hole
Keep goose gun tilted up and in a safe direction.
Roll the fuel end can between your hands to somewhat vaporize the fuel
Roll a used tennis ball down the tube til it hits the fuel can
Touch match to the fuel hole.

HOLD TIGHT!

Hangfires are COMMON!
It will shoot a tennis ball across a city street and 2 lawns. (or so tests confirmed)
If set down after a hangfire, the free recoil of you NOT HOLDING it will drive it back hard enough to break stucco.
(also confirmed in testing )

Use at your own risk.
Fun can be risky.

[bohoki]

no solid fuel is more stable

[Pyrite]

no solid fuel is more stable

Well, .....yeah. I think that's why gunpowder is more popular than lighter fluid.

[walterSOBCHAK]

No but I have a riding chainsaw powered by av gas with with a cup holder and a 50 bmg mounted on the rear over
over a set of 28 inch chrome circus rims.

[Grumpyoldretiredcop]

Think "Diesel gun" instead, that might work better.

Oh, and my favorite part of the above video starts at about 22:33. Linked it here!

[The Gleam]

I've seen that trick where you put a teaspoon of gas in a 2 liter plastic bottle and it sends it off pretty good.

How about a hybrid of an airgun and firearm where you compress a fuel/air mixture and use that to fire a projectile.

Please, oh please, give it a go. Be sure to have someone more than 50 feet away from you and your contraption, to catch it all on video for you so the rest of us can get a chance at watching the outcome.

Please.

[Twystd1]

Gas is easier......

http://www.homedepot.com/p/Hitachi-3-1-2-in-Cordless-Gas-Powered-Plastic-Strip-Collated-Framing-Nailer-NR90GR2/202715755

This will shoot a nail into light gauge sheet metal AND a 2X4.

The problem with gasoline as a propellant is that it will be difficult to achieve the PSI needed to move a bullet at a realistic and usable speed.

Lets say you need north of 14,000 PSI to make your gasoline gun workable. Gasoline doesn't have the burn speed and BTU's to get this done with much efficacy as a bullet propellant.

Think of gasses instead of gasoline. You need something that combusts QUICKLY and can be easily combined with an oxidizer to create a controlled burn rate.

Now put on your thinking cap........................................... It can and has been done.

-T

[vliberatore]

Gyrojet anyone?

[glock_this]

You want gas powered gun? Here you go... only $700

http://www.dudeiwantthat.com/gear/novelty/xm42-handheld-flamethrower.asp

[ChaoSS]

I think there have been some experiments with this in machine guns.

I would imagine it would work best as basically an "open bolt" system, where when the trigger is pulled the "bolt" slams forward, compressing the air, then gasoline is injected, and ignited. Would work sort of like a typical internal combustion motor, but instead of the compression being provided by the motor turning, it would be a spring pushing back, the spring would be compressed by the detonation of one shot, then the spring compresses the chamber for the next round.

I think the army has played around with it, it seems to me a talented mechanical engineer could make it work, and likely work better than cartridge based machine guns, but I guess no has has so far.

[ziconceo]

Even a gasoline powered gun is still considered a firearm under the law and full auto would be a felony....I don't think gas would be a good idea honestly. If I had to use something else besides gasoline and gunpowder I'd probably try compressed hydrogen and some unstable ionized oxygen or O3. Pretty darn explosive from my testing. Only problem is that the explosion creates water and may rust your gun.

[kcjr1125]

Even a gasoline powered gun is still considered a firearm under the law and full auto would be a felony....I don't think gas would be a good idea honestly. If I had to use something else besides gasoline and gunpowder I'd probably try compressed hydrogen and some unstable ionized oxygen or O3. Pretty darn explosive from my testing. Only problem is that the explosion creates water and may rust your gun.

theres always one person in a group that just HAS to use logic and sound reasoning to ruin the soon to be fail party. C'mon man, lets encourage him to make the evening news!


OP i say go for it and like someone else said, make sure you have a buddy video tape the whole damn thing. I mean just think about it. What if it works and it works great?! you could sell it to the military and be like Starks from Iron man. you will be sooooo coooool. you could make mmmiiillllliiiooonnnss!!