E.M. ENGINEERING

DESIGN: A proof of concept design, completely self contained combustion light-gas gun or HOG-ST (Hydrogen Oxygen Gas - Survival Tool) muzzleloader made of black iron and PVC,  consisting of an un-pressurized ~4.7 cubic inch combustion chamber with a 12" x .5" inch barrel.  Oxyhydrogen fuel is generated from the onboard 316 stainless steel 8 plate electrolyzer containing water and KOH (Potassium Hydroxide).  The cell is powered by onboard 9.6 volt lithium battery or external power source.  From there, the fuel is fed through the forward attached bubbler\scrubber, then passing through a one-way safety check valve.  From here the fuel is passed through a manual (double safety) ball valve where it is delivered to the combustion chamber.  The ball valve must be opened during charging and closed when firing.  Ignition is acheived by way of a disposable lighter piezoelectric generator which creates a spark in the combustion chamber.  Even with fully charged combustion chamber, it seems to operate more as a glorified cap\stun dart gun.  99% of the parts for this project was purchased from local hardware stores.  May work well in a survival situation on small prey at a somewhat close range (*Barrel contains no rifling).

PROJECTILES TESTED:  Paper - Wood

CONSTRUCTION: VIDEOS\IMAGES