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Super Small

Built a pneumatic 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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Unread postAuthor: iamthewalrus » Thu Jun 09, 2005 5:51 pm

Yeah, i had a strange idea one night and i thought "y does combustion have super small pill guns but pnumatics are all a lot bigger" so i desided to make a super small pnumatic. its just a 1" diamiter chamber with a BB barrel and a diaphram with a schrader valve to trigger and fill it. i havent glued anything yet so if u have suggestions now is a good time to give um.
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Unread postAuthor: saladtossser » Thu Jun 09, 2005 6:27 pm

why don't you add a hand pump right on it for portablility, other than that, keep it simple.

What did you use for a diaphram?
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Unread postAuthor: iamthewalrus » Thu Jun 09, 2005 6:31 pm

a drain stopper i cut into a circle
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Unread postAuthor: spudshot » Thu Jun 09, 2005 6:59 pm

looks good, but i've got a smaller one :wink: i'll post pics sometime, if i can find the damned cannon
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Unread postAuthor: Cole » Thu Jun 09, 2005 10:30 pm

I made one out of syringes and syringe valves, well I havnt finished yet, no supplies. It will use syringes as pumps to go into a small chamber hooked up to a bb barrel (straw, they fit bbs perfectly) The syringes and valves are really easy to get because my mom is a nurse.
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Last edited by Cole on Fri Jun 10, 2005 6:23 pm, edited 1 time in total.

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Unread postAuthor: CS » Fri Jun 10, 2005 1:07 pm

How will the syringe pump the air in? It will just suck the air out of the chamber.
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Unread postAuthor: saladtossser » Fri Jun 10, 2005 1:15 pm

good idea, but with a syringe, you can make a vacuum, and it will spring back at an extrodenary force, and it can shoot a bb out, i made on when i was 6, but shot spit balls.
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Unread postAuthor: Cole » Fri Jun 10, 2005 2:05 pm

http://img85.echo.cx/img85/6692/syringegun3aj.jpg I decided to use the syringe as the chamber to simplify things. Less bulk and only one valve.
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Unread postAuthor: saladtossser » Fri Jun 10, 2005 2:21 pm

it will be a pain in the ass to compress it to that point from full.
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Unread postAuthor: spudshot » Fri Jun 10, 2005 2:39 pm

one other thing, how are you going to get the pragm out if it needs maintenence, it seems like you're using all solvent weld parts
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Unread postAuthor: iamthewalrus » Sat Jun 11, 2005 4:01 pm

no idea, if it breaks i wont care a whole lot, i dont even know y i made it, just thought it would be fun, i doubt it will work once i finish it and its a good place to store my spare schader valves
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