Combustion "rifle" + Hello Thread

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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Steel Sovereignty
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Sun Feb 24, 2008 10:08 am

Hello Spudfiles, I've been getting interested in spud guns for the past couple of weeks now and have frequently come back here for inspiration and design ideas. I've created this account to show off what you guys have helped me build, and eventually contribute to this forum.

Now that thats over, lets look at the spud rifle ^__-

I've designed this to looks something like a hunting rifle. unfortunately I do not live close to any large hardware store chains and have only the resources of those "family owned" type businesses. I was able to scrounge out most of the parts that I needed however I could not find a piece of piping long enough for the barrel.

Here is the original shitty MS Paint design sketch:
http://i15.photobucket.com/albums/a391/ ... etch-1.png

And here is the (almost final) result with temporary barrel:
http://i15.photobucket.com/albums/a391/ ... G_0653.jpg

This is what it looks like with the barrel removed:
http://i15.photobucket.com/albums/a391/ ... G_0654.jpg

The final adjustment that I am hoping to make are as follows:
- find long enough piece of 1/4" pipe to use as a barrel
- Add wooden grip
- Add laser pointer for accuracy
- eventually retrofit for pneumatic use (for more power!)

I'd really like some input! Thanks :3
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SpudFarm
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Sun Feb 24, 2008 12:58 pm

welcome steel : )

the gun looks good enough but a little ghetto ;)
some damage?
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Sergeant Dotson
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Sun Feb 24, 2008 1:37 pm

Very ghetto... I love this. But yah, at the same time, a little too ghetto. Make some small adjustments to make it neat and a paintjob, then, it will be completed. 8)
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Steel Sovereignty
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Sun Feb 24, 2008 1:37 pm

Haha, thanks spudfarm, I can't argue with that =P

I don't have any damage shots yet, the C:B ratio is all messed up, at the moment it only shoots a nerf dart 80 feet.

I'm going to be headed out to home hardware in a few days to check out what selection they have in 1/4" tubing and hopefully a longer barrel will help with the power. (current barrel size is only about half the black pipe)

edit:
Thanks for the suggestion Sergeant when I head out to home hardware I'll probably grab some spray paint to give it a nice cammo paint job :3
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jook13
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Sun Feb 24, 2008 2:08 pm

right on man! I love the ghetto! I say duct tape a small piece of pipe on the barrel to make it look like a scope. :wink:

haha, but seriously. I think a longer barrel would help. perhaps a copper barrel? They are smoother inside and I dont think it would be hard to find a brass coupling to fit the copper and steel together.
I like to play blackjack. I'm not addicted to gambling, I'm addicted to sitting in a semi-circle.
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Steel Sovereignty
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Sun Feb 24, 2008 2:15 pm

Great suggestion jook! I'll defiantly get some copper as a barrel. thanks a bunch.

Also, I'm pretty sure I have just the right piece of piping in mind to use as a scope ^__-
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Hydra
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Wed Mar 12, 2008 12:17 am

Nice..Although it needs some messing/cleaning up, to make it look better/ghetto
JTF3
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Sun Jun 08, 2008 2:46 pm

Ghetto enough for a drive-by :wink:

Ha, I also used MS paint for my rough design.
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psycix
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Sun Jun 08, 2008 6:59 pm

Well seems like a nice cannon :D
That huge chunk of steel at the front of your chamber looks quite funny.

Why are you using both pvc and metal, instead of completely metal or pvc?
Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

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rp181
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Mon Jun 09, 2008 7:42 pm

Same, i dont get why you steped the size up, and brang it back down lower.
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Mon Jun 16, 2008 12:03 pm

yea i does kinda look getto; but thats what are spud guns are for.
like the design drawing :lol: and the rifle design is cool
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colty-bear
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Mon Mar 16, 2009 6:40 pm

How the heck did you get a picture with you only being a private
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starman
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Mon Mar 16, 2009 7:27 pm

colty-bear wrote:How the heck did you get a picture with you only being a private
Anyone can have an avatar...I recommend everyone get a good one. Go to the bottom of your profile page and take care of it.

@ Steel

Not bad. You are losing some punch going around those 90 degree bends to your barrel.

Welcome to Spudfiles!
Last edited by starman on Mon Mar 16, 2009 7:31 pm, edited 1 time in total.
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LCTChamp
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Mon Mar 16, 2009 7:28 pm

colty-bear wrote:How the heck did you get a picture with you only being a private
You can have zero posts and have a picture. All you have to do is upload it. Which I personally am to lazy to do.

Well back on topic. The gun is ghetto as said above, but nothing a few changes can't fixed. Welcome to Spudfiles!

edit: Dang it I type too slow.
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TwitchTheAussie
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Mon Mar 16, 2009 9:12 pm

Good work mate. I take it that by going to Home your an aussie? :wink: . Welcome to the world of the ghetto n the elite.
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spudgunning is like sex, once you've tasted, you can't wait til next time.
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