My First 5.25 Liter MAPP Gas Combustion Cannon

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
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Terryg43
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Wed Nov 22, 2006 9:27 pm

This is the first cannon I've ever built and I call it the " Monster Masher". With info from KlugeBoy and Burnt Latke I was able to build a very sucessful and very powerful cannon. Its a 5.25 Liter MAPP gas powered combustion cannon made from 4" Schedule 40 PVC with an internal 80mm combustion fan. A standard gas grille ignitor is used for the ignition. Both handles are completely sealed from the chamber for safety and also threaded on for easy removal and service. MAPP gas tank is also encased in 3" Schedule 40 for added protection. Hope you enjoy the pics. Happy "Spudding" !!
Attachments
This is a Left Side View.
This is a Left Side View.
This is a Right Side View.
This is a Right Side View.
This is a Rear view. Note the 80mm combustion fan.
This is a Rear view. Note the 80mm combustion fan.
This is a front view. Note the brass chamber vent.
This is a front view. Note the brass chamber vent.
This is a Top View.
This is a Top View.
This is my 1.5 inch Muzzle Break.
This is my 1.5 inch Muzzle Break.
This is my complete set-up.
This is my complete set-up.
Last edited by Terryg43 on Thu Nov 23, 2006 5:28 pm, edited 5 times in total.
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ProfessorAmadeus
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Wed Nov 22, 2006 9:30 pm

Awesome gun!! I like it alot. You did a great job on this And i love the way it looks! Its all so neat and tiddy and looks very profesional. I really dont know what else to say but WOW! Its just amazing! I love it.
Insomniac wrote:Hey why am I a goose???? Why not somthing a little more awe inspireing, like an eagle or something? LOL
SOO CUTE!! OMG!! I COULD JUST LICK YOU!!
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SpudStuff
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Wed Nov 22, 2006 9:35 pm

You what is probably that nicest looking guns in a good while. It is clean and consice!
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experament_u2
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Wed Nov 22, 2006 9:47 pm

nice gun the muzzel breaks a bit of the chops tho nice signature to spudstuff
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TalonXxX
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Location: Canada

Wed Nov 22, 2006 9:50 pm

WOW!!! This is your first??? This is better than most "experience" builders. Very, very clean and I love the layout you designed. Looks like it would be very nice to handle.

I am truly impressed. My one and only suggestion/concern:

I hope you have separated the sparker from the chamber with some epoxy or fitting or something. Although this has never happened to me, some say that the trigger could possibly blow upward and possibly damage the finger pressing the sparker. So, if you had it sectioned off with just two holes for wires then that would be safer.

Other than that one minor detail, I absolutely love this gun. It's nothing short of contest worthy in my books :D
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MisterSteve124
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Wed Nov 22, 2006 10:07 pm

That is a beast. Looks nice a clean and just awesome.
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