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My First Pneumatic

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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My First Pneumatic

Unread postAuthor: wannabie » Sun Apr 29, 2007 1:20 am

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I built this from parts from my local small town hard ware store. I have water tested it to 85 PSI. I have tried batteries, marbles, slingshot pellets and water. The power is good but the aim is bad. I have already destroyed my mums least favourite garden ornament as show in pictures above. The batteries seem to do the most damage. Please do not comment on the ball valve, this is my base model.

PS. do you like my cat?
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Unread postAuthor: Pyro Ninja » Sun Apr 29, 2007 1:30 am

pretty cool first...looks kinda like my one, but mine is steel....
Is the barrel 1/2'' poly pipe....what size is the valve
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Unread postAuthor: hi » Sun Apr 29, 2007 1:31 am

thats a good "im bored, i wanna shoot something" cannon. you know, if you could set it up so that is the ball valve was opened by a spring and held back by a trigger, ill bet you anything it would be more powerful than a sprinkler valve. i did it with a bunch of rubber bands on my first and it could open the 3/8'' ball valve about 3 times faster than i could.

PS reply- i think you should show the cat how to shoot it.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: wannabie » Sun Apr 29, 2007 1:35 am

the barrel is 1/2 inch tap riser and the valve is a half inch ball valve

lol that would be funny a cat walking around with a battery gun :D
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Unread postAuthor: skinner » Sun Apr 29, 2007 3:26 am

Good for a first.

Very basic, No flash bells or whistles.
clean cannon, and I like it.

Keep up the good work.

--Skinner
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Unread postAuthor: Redcoat » Sun Apr 29, 2007 3:32 am

thats fairly clean and nice.good job.
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Unread postAuthor: wannabie » Sun Apr 29, 2007 3:37 am

hi wrote:if you could set it up so that is the ball valve was opened by a spring and held back by a trigger, ill bet you anything it would be more powerful than a sprinkler valve. i did it with a bunch of rubber bands on my first and it could open the 3/8'' ball valve about 3 times faster than i could.



do you have any plans on how to set up a trigger system? any help would be appreciated :)
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Unread postAuthor: XxtriviumxX » Sun Apr 29, 2007 3:45 am

lol that looks so much like my first pneumatic......but i have a stock :D

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Unread postAuthor: wannabie » Sun Apr 29, 2007 3:54 am

but didnt yours get steeled by teh police lol
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Unread postAuthor: XxtriviumxX » Sun Apr 29, 2007 4:14 am

wannabie wrote:but didnt yours get steeled by teh police lol


sure did lol :D
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Unread postAuthor: mega_swordman » Sun Apr 29, 2007 4:43 am

very good and basic. There's nowhere to go but up. Good job :thumbup:
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Unread postAuthor: jackssmirkingrevenge » Sun Apr 29, 2007 4:50 am

wannabie wrote:do you have any plans on how to set up a trigger system? any help would be appreciated :)


Good stuff :)

Rather than bother trying to make a complex trigger for the ball valve, I suggest you get a sprinkler valve and mod it - much easier to do, and you'll get better performance.
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Unread postAuthor: noname » Sun Apr 29, 2007 10:23 am

But then he can't use hundreds of psi! :( High pressure is always more fun then a little extra performance.
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Unread postAuthor: jackssmirkingrevenge » Sun Apr 29, 2007 10:28 am

noname wrote:But then he can't use hundreds of psi! :( High pressure is always more fun then a little extra performance.


... eh?
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Unread postAuthor: super spuder » Sun Apr 29, 2007 10:45 am

cute cat :lol: nice gun to, i cant wait to see your next one. how many psi do you have access to. (by means of an air compressor or bike pump)
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