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Mini Pneumatic

Built a miniature cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Mini Pneumatic

Unread postAuthor: LGM » Sat Jan 27, 2007 3:51 pm

This is my mini pneumatic. It uses a blowgun as a valve with 1/8" brass pipe as the barrel. The chamber is 1 1/4 inch with two endcaps making up the entire length, I just cut enough pipe to join the two. I built this because my dad claims that my butane mini is a fire hazard.
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Last edited by LGM on Sun Jan 28, 2007 6:11 pm, edited 2 times in total.

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Unread postAuthor: LGM » Sun Jan 28, 2007 11:15 am

First shots this morning!
When I was using airsoft pellets they came out of the barrel at angles and hit various objects around the room, but Q-tip and foil darts fly accurately long distances.

Edit: I have now attached a longer, clear barrel to it. More speed, accuracy, and range of things to shoot. It fits thumbtacks well and can stick them into a door from about seven feet away, farther than that it begins to tumble and bounce back at me with considerable force.
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Last edited by LGM on Sun Jan 28, 2007 7:22 pm, edited 1 time in total.

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Unread postAuthor: medievalman » Sun Jan 28, 2007 6:30 pm

dont double post, use the edit button.

now that thats over with, the gun looks pretty nice for a small gun, but i think that the barrel is so skinny compared to the chamber that it is severely constricting airflow. other than that, great job!
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Unread postAuthor: Hawkeye » Sun Jan 28, 2007 9:47 pm

The blowgun has far worse flow than the barrel. If you're shooting small projectiles, you can't very well have a huge amount of flow if you want then to fit in the barrel nicely.
It would be far more practical to make a piston gun of the same size. Then it would be faster flow.
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Unread postAuthor: LGM » Mon Jan 29, 2007 4:54 pm

In my idea going through the trouble to make a piston gun just to shoot q-tips and paper wads in my basement isn't really that practical. But I will be making a paintball piston gun eventually, I'll post it.
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Unread postAuthor: medievalman » Mon Jan 29, 2007 7:47 pm

you should mod the blowgun for even better performance! look it up in the wiki.
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Unread postAuthor: Specialist » Sun Mar 18, 2007 8:09 pm

:shock: :shock: :shock: i have never seen a pneumatic mini. it looks insane!!! i like it! how did you build the chamber??? thats a very clean gun :D wow
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Unread postAuthor: jon_89 » Sat May 05, 2007 3:04 am

what did you use to connect the blowgun to the chamber?
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Unread postAuthor: Kenny_McCormic » Sat May 05, 2007 10:21 pm

a 1/4 inch npt brass close nipple
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Unread postAuthor: jon_89 » Sun May 06, 2007 1:16 pm

do you know how i would attach that to a .5in female adaptor?
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Unread postAuthor: jon_89 » Sun May 06, 2007 1:23 pm

how would i connect that to a .5in female adaptr?
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Unread postAuthor: frankrede » Sun May 06, 2007 2:33 pm

What? what do you mean?
And don't double post'


And specialist, hgave you sen Jacks mini coaxial?Its alot smaller than this
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