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Re: Potato guns
I have several guns, but my favorite is my latest creation.
Fuel: Propane
Combustion Chamber: 4"Dx18"L
Interchangeable Barrels: 2"Dx3.5'L, 2"Dx6.5'L, 1.5"Dx4'L, 1.5"Dx6'L, all barrels have functional muzzle breaks.
Igniter: Lantern Flint
As for the safety of air over combustion... my air cannon was the only one to ever explode on me, and as long as proper construction techniques and materials are used, everything should be fine.
I did the calculations for the MAXIMUM IDEAL PRESSURE generated by the perfect combustion of propane and air... 132psi, well within the 220psi operational limit of the Sched 40 PVC I use.
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Theory is a nice place, I'd like to go there one day, I hear everything works there.
Maturity is knowing you were an idiot, common sense is trying to not be an idiot, wisdom is knowing that you will still be an idiot.
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