Mean Green

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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crazzzyman_01
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Wed Nov 01, 2006 10:26 am

Here is yet another propane injected spud cannon. It's not anything special but it's simple, sturdy, easy to build, and launches huge potatoes well over 300 feet.
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100_1115.jpg
Propane Injection and BBQ Igniter
Propane Injection and BBQ Igniter
100_1113.jpg
Single ignition works pretty good, might try dual later.
Single ignition works pretty good, might try dual later.
100_1111.jpg
100_1110.jpg
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Spyider
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Wed Nov 01, 2006 11:48 am

intresting tripod stand you got for it lol

how much propaine u put in it :?:
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Billy Bob
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Wed Nov 01, 2006 11:52 am

Wow :D looks very good.

How much volume the chamber have ?
Which diameter are the tube have ?
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SpudStuff
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Wed Nov 01, 2006 6:56 pm

WOW! Very nice and clean, one of the nicer guns to come through here.
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frankrede
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Wed Nov 01, 2006 7:29 pm

Nice cannon bro.
Now I have to get onboard propane.
Spudstuff you mentioned you do it without a regulator does it work good that way?
Current project: Afghanistan deployment
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SpudStuff
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Wed Nov 01, 2006 8:11 pm

You can get by but the problem is that when the pressure in the can drops it effects the performance. I would always reccomend using a reg.
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crazzzyman_01
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Wed Nov 01, 2006 11:09 pm

I charge the 12 inch x 1/2 inch injection pipe to 40 psi. It's the most powerful to cosistent ratio i've found. I have fired a 60 psi charge and it blew the potato into tiny pieces as it came out, but it misfires a lot any higher than 40 psi due to incorrect fuel to air ratio. The chamber volume is roughly 300 cu/in and for it I used 4" pvc the barrel is 2". I could have used a longer barrel but it think it looks better this way and is easier to carry.
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frankrede
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Thu Nov 02, 2006 1:54 am

lol.
Thanks spudstuff.
But I don't like spending money.
So I guess ill set up a propane injection and buy a reg another time.
So i guess ill make it upgradable.
Current project: Afghanistan deployment
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SquishY
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Thu Nov 02, 2006 2:02 am

Kudos for the nice green and very interesting Van Goh(sp)-esque stand.
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killagorrila99
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Fri Nov 17, 2006 4:29 am

Yes, very good. Tre' cool as they say in...erm somewhere.
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3quarters
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Sun Jan 14, 2007 2:49 am

yea i dig the onboard propane there dude

nice job squishy for the LAMB OF GOD quote there in the sig
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akaddis
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Tue Jan 16, 2007 3:10 pm

ouch!! must be painfull Awesome design though..!!
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Brooner115
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Sat Jan 27, 2007 3:50 pm

The cannon name says it all :twisted: !!!
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LGM
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Sat Jan 27, 2007 4:21 pm

Sweeeeeeeeeeeeeeeeeeeet!
Do you have interchangeable barrels on that? A chamber that size could launch some heavy things pretty far.
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medievalman
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Mon Jan 29, 2007 8:08 pm

nice gun, i'm lovin' the hose clamps!
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