Regulators are all brass don't worry they are heavy duty welding regulators 153x-250 gentec I believe should do the job it's rated for it. Also potatos were not really my main projectile in mind I was thinking 20-30mm bearings, DYI ;) hence the need for licensing, and I know it sounds crazy but ...

The meters are nessecary for semi auto firing, the meters are all aluminum and therefore non ferrous and won't spark it can contain the gases. I understand the concern of a burst disk but considering it is scored it is designed to peel. In addition I have no plans of standing near it when firing and ...

the chamber is 1026 steel (5.5" outside diameter, 4.5" inside diameter, .5" wall, 8"-12" in length) with a 4.5" brass burst disk on the side facing away from me in the event that the pressure was going to exceed the rating of my chamber and other components the combustion would be safely released ...

How powerful (in a very general sense) would a mixture of pure oxygen and propane under pressure (60 psi prior to ignition) in a 200 cubic inch combustion chamber? Would this mixture require a chamber fan to adequately mix the gas? or would simply adding the gases sequentially and allowing their ...