Spud guns
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Senior User
Joined: Feb 2003
Posts: 250
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From: northwest
Spud guns
My cousin ripped off my idea for a spudgun and made his bigger and badder than mine. Of course I ripped off someone elses. Alas his was PVC also. But we threaded a compression guage down one of the holes and fired one off using a little calcium carbide and water. It only registered 32 PSI after the spud took off. There are alot of spud gun sites "out there", so if you've got time to kill check some out. Apples, onions, and assorted different things work well in a spud gun. Please be careful and do not aim the spud gun at another living thing. Human or animal. 
Elder User
Joined: Apr 2002
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From: utica n.y., u.s.a.
i finally got mine all together and working ...it is simple as all heck but it is enough to have me and my friends rolling on the floor laughing
mine is 1ft or 4"pvc and 5ft of 2"pvc a little hair spray and a bbq ignitor and kablooey...im trying to find more stuff to launch i cant get a tennis ball in because they are too big i can fire spuds...apples...onions but i want more ideas
mine is 1ft or 4"pvc and 5ft of 2"pvc a little hair spray and a bbq ignitor and kablooey...im trying to find more stuff to launch i cant get a tennis ball in because they are too big i can fire spuds...apples...onions but i want more ideas
Senior User
Joined: Dec 2003
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I found a geat way to use my pvc spud gun, when your toilet is blocked. Cut out a piece of cardboard the size of your toilet bowl and then cut a hole the size of your spud gun barrel in the centre of this carboard, tape the carboard to the bowl (using strong tape) stick the spud gun into the hole and into the toilet water (you must have the barrel in at least a couple of inches) don't put any "ammunition" in your spud gun, just a blank charge. Fire it off and your toilet will be unblocked. Saves on plumber bills. The frist time I did it I didn't have the carboard, all the sewerage came back up and got me all over, it was even dripping of the roof, not a good thing after you have had 18 cans of beer---------straight to the shower.
Chris
Chris
Post Fiend
Joined: Jan 2003
Posts: 10,323
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From: Montana Territory
LMAO - Nudgey.
You could just invest in a plunger. That would help out a lot.
My gun is 18"x4" combustion chamber, 4" - 3" Female reducer, 3" - 2" Male reducer, makes for a super strong forcing cone, then a 6' x 2" barrel, ported beginning 8" from the tip, with a knife cut into the end. I use a lantern ignitor, which won't gum up. My gun is painted Ford Blue #224.
I have found that lemons and clementines work marvelously. If you in for ballistics, try an ear of corn, still in the husk.
You could just invest in a plunger. That would help out a lot.
My gun is 18"x4" combustion chamber, 4" - 3" Female reducer, 3" - 2" Male reducer, makes for a super strong forcing cone, then a 6' x 2" barrel, ported beginning 8" from the tip, with a knife cut into the end. I use a lantern ignitor, which won't gum up. My gun is painted Ford Blue #224.
I have found that lemons and clementines work marvelously. If you in for ballistics, try an ear of corn, still in the husk.
Posting Guru
Joined: Jun 2002
Posts: 2,375
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From: inver grove heights MN
i would like to find out where you guys using steel get it from? i use to work at a warehouse that produced and sold tube, and steel but at the time i had just made a pvc spud gun so i didnt feel the need for a new one.
as for spud guns exploding, ive personally only known one person it happened to, and the simple fact of who built it explains it all.
i have ALOT of duct tape wrapped around my chamber, and downsizer+ part of the barrel. plus a canvas sling from a rifle! and exit only sign pointing out the barrel, and a "please keep door closed" by the rear "hatch"
i prefer aqua-net, but after shooting it i had to leave the rear cap off so the aqua-net didnt seal it shut. i havent shot it in probably 2 years, my neighboors have been pretty touchy lately.
sometimes it sounds like a 12 guage going off!!! i think itll only go about 250-300 yards on hair-spray, but thats fine with me... cause thats the distance between my house, and the houses across the field... LOL
as for spud guns exploding, ive personally only known one person it happened to, and the simple fact of who built it explains it all.
i have ALOT of duct tape wrapped around my chamber, and downsizer+ part of the barrel. plus a canvas sling from a rifle! and exit only sign pointing out the barrel, and a "please keep door closed" by the rear "hatch"
i prefer aqua-net, but after shooting it i had to leave the rear cap off so the aqua-net didnt seal it shut. i havent shot it in probably 2 years, my neighboors have been pretty touchy lately.
sometimes it sounds like a 12 guage going off!!! i think itll only go about 250-300 yards on hair-spray, but thats fine with me... cause thats the distance between my house, and the houses across the field... LOL
Post Fiend
Joined: Jan 2003
Posts: 10,323
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From: Montana Territory
I forgot to mention, try using axe or old spice deodorant spray, it uses a propane propellant. Good stuff. Its clean and it smells good when you shoot it. Plus its way cheaper than a propane metering system.
Its clean and it smells good when you shoot it. Plus its way cheaper than a propane metering system.
Elder User
Joined: Sep 2002
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i made one out of a small camping grill the propane kind. just welded the top on and cut a hole for the barrell it already had the ignitor and propane hook up it was to big to hold so i had to build a turret for it i bet it shot almost a mile but i kept adding propane and eventually blew it apart but it was fun while it lasted
Senior User
Joined: Jun 2003
Posts: 222
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From: Cumming, GA
Ever make a grape gun? Just use 1/2 or 3/4 inch pipe for the barrel and you can shoot little plugs of potato or grapes. Oh yeah, spray deodorant is great because the only residue it leaves after combustion is water - probably because its mainly propane.
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Senior User
Joined: Dec 2003
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I forgot to mention a feature of my spud gun. It has a "pressure blow out valve" from a "Namco" pressure cooker, when the pressure is too great it will blow out this valve instead of blowing up your hand. All you do is drill a 3/8" (10mm) hole in the combustion chamber of your spud gun and fit this pressure grommet into it. It has happened to me a couple of times when you put something to big into your chamber, the pressure has no-where to go it will just blow out this grommet, just like my mums chicken when it is left too long on the stove in her pressure cooker. I think the part cost 5 dollars (australian) which is about 150 dollars american (lol).
Chris
Chris
Elder User
Joined: Feb 2003
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From: Boise, ID
We made several spud guns in high school. We live in Idaho after all. After a few failed attempts with PVC our final design was a 4' long 2" steel pipe welded to an 8"x 8" 1/4" steel plate.
Starter fluid works well but can be volitile. We found the best fuel to be pure O2.
Starter fluid works well but can be volitile. We found the best fuel to be pure O2.
Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
I have 4 of them. All in different sizes and shapes. My latest is a double barrel. I have a 2'X4" chamber with a grill igniter and a cabinet handle that necks down to 1 1/2" Y with 3 1/2' long barrels. Shoots both potatoes every time. Awsome.
RubberDuck
RubberDuck
Post Fiend
Joined: Jan 2003
Posts: 10,323
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From: Montana Territory
I know a guy, made a golf ball cannon, ran on 3 ounces of Pyrodex, thats 1350 grains, if you want to equate that to a muzzleloader shot of 150 grains.
He could launch a golf ball 1500 meters
He could launch a golf ball 1500 meters