interesting motar-type design

[FishBoy]

Just found this & I thought it was pretty cool, anyone got any ideas on how it might work?

[youtube][/youtube]

[Demon]

I dont know at all, but it doesn't looks very powerful...

There is an white cylinder between the chamber and the barrel, maybe a valve?At 0:20

[jor2daje]

I have seen one of these before i think it uses vaporized gasoline with compressed air as a propellant. Im not sure but it might be on instructables.

[MrCrowley]

Look at his other videos, there's something on the side:
http://youtube.com/user/Rai41478

[newbmatic]

Found it!


http://www.instructables.com/id/Gasolin ... her.-Desi/

[starman]

This actually looks like a gasoline "hybrid", believe it or not using a soda bottle as it's chamber and "propulsion rocket".

For all the effort and gizmos inside that thing, it appears to be greatly inefficient.

[jor2daje]

Yeah it sorta looks like it uses the friction of the soda bottle and the pipe to make a sort of ish burst disk/chamber combo.

[Lentamentalisk]

If I were to do this, I would use the bottle as a burst disk, and screw it on, rather than just friction fit. Just fill it up to a 5x mix, and ignite it. That would get you actual range, as opposed to theirs, which is just a badly designed bottle rocket.