Combustion Launcher with Metered Propane Potato Cannon

A 1" bore launcher with metered propane propellant. Construction details and test shots with plastic ball ammo. Breech loading "bolt action" system. Suppressed barrel with long silencer. Shots showing damage.

Category:

Entertainment

Tags:

• Potato
• cannon
• launcher
• gun
• bore
• breech
• propane
• metered
• damage
• combustion
• firing
• silencer
• suppressor
• sniper
• smooth
• rifle

[lilwyteboi206]

what type of valves do you need in order to make one of these propane powered? Links would be nice, but names are just as good.

[karlwinkler66]

@lilwyteboi206 I just used ball valves ordered from US Plastics, and some plumbing parts purchased from Lowes. The key is to make a propane meter - do a search for this on YouTube - there are some good tutorials. Also, check out SpudFiles forums - tons of great info and tutorials there along with some cannons that make this one look like baby stuff.

[8tonsemi]

@karlwinkler66 Where can you get trigger valve like you had connected to the propane

[karlwinkler66]

@8tonsemi That's part of a bike tire inflator from Genuine Innovations, where I got the "Big Air" propane cylinders, the exact part is Ultraflate Plus.

[jessesefcik]

i have a similar gun but i want to add propane injection into my gun, what psi should i use? i have no idea where to start, the one i want to buy come with 5 feet of hose and meter and on and off thing and two ball valves on the pipe, any idea what psi i i should use for the gas? im using 4 inch pipe about 12 inch and 2 foot chamber on my guns

[karlwinkler66]

@jessesefcik There are some tutorials on YouTube specifically for setting up a propane meter - take a look at some of those. I found that math got me about 80% there, then trial and error got me the rest of the way. The PSI of the propane meter pipe depends on the volume of propane needed for your chamber (about 4% propane, 96% air), and the volume of your pipe.

[8tonsemi]

@karlwinkler66 Thank you that helps a lot.

[1Immortalman]

u HAVE TO make about 1.5meter barrel!!1

[Tearley84]

awesome design man, i've been designing potato guns for years and always wanted a put a fan in the chamber. very cool gun man.

[smeagle9999]

wow.... I don't really like potato guns that use explosive gases as fuel because you can't usually control the amount of force.... but thats a very nice design- especially the way you regulate the propane by its psi