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easy mapp gas potato cannon

Posted: Fri Jul 08, 2022 4:43 pm
by noboi4
i love potato cannons,
i want to make one that is going to last a long time and impress guests.
i wanted to make one that used propane that i could attach mapp gas to the hose.
however when researching this i learned that for a mapp gas and oxygen mixed makes to much pressure and heat so it would need to be made of metal
is this true? if so has anyone made a guide on how to weld a metal potato cannon and inject mapp gas into it
i am unsure. what i wanted to replicate was this: but don't want it to blow up in my face

Re: easy mapp gas potato cannon

Posted: Sun Jul 10, 2022 6:55 am
by jackssmirkingrevenge
One is generally well advised not to mess with oxygen.

If you do, PVC construction is not a good idea, as the potential pressure generated increases proportionally to the amount of oxygen available.

Consider using a syringe to meter your fuel for good and consistent performance, rather than guesswork and hoping for the best.


Re: easy mapp gas potato cannon

Posted: Fri Mar 01, 2024 10:53 am
by quinn whitsitt
nice job, also is there anything that i can do to help