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ideas on portable pneumatic

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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ideas on portable pneumatic

Unread postAuthor: shiny455 » Mon Apr 18, 2011 10:02 pm

i am interested in making a portable very powerful gun to shoot ball bearings probly just small 6mm ball bearings. first i thought i would try make a spring piston gun but after looking through this site most people tend to avoid spring piston guns. i also want to steer away for combustion as it seems a bit dangerous and unreliable. i was thinking something with a small inbuilt stirrup pump with a very small air chamber. i was wondering if anyone had any ideas on the size air chamber i will need, the best trigger mechanism or just any ideas or opinions. i dont have access to any co2 cannisters or anything like that.
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Unread postAuthor: more_eggs » Mon Apr 18, 2011 10:32 pm

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Unread postAuthor: Yamroll » Mon Apr 18, 2011 11:24 pm

A lot of guys on here have built tiny coaxial cannons that would be in that size range, and could be made to power up with a compressor (or even a high pressure hand pump if need be). Check out some of the showcase forums.


Also, maybe get GGDT (Gas Gun Design Tools). Program will let you work out things like chamber size and such, based on the size/mass of your projectile, the muzzle velocity you want, et cetera.
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Unread postAuthor: shiny455 » Mon Apr 18, 2011 11:33 pm

thanks ill have a look through the showcase and i downloaded GGDT ill have a look at that. is a piston valve the best trigger mechanism for power?
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Unread postAuthor: Lockednloaded » Mon Apr 18, 2011 11:37 pm

I know its my own creation...but it really meets all of the criterium
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Unread postAuthor: shiny455 » Mon Apr 18, 2011 11:52 pm

Lockednloaded wrote:I know its my own creation...but it really meets all of the criterium


yes it does thanks heaps.. is it worth doing?
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Unread postAuthor: Lockednloaded » Mon Apr 18, 2011 11:56 pm

If you've got a better barrel then I had, then yes. It was loads of fun and insanely simple.
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Re: ideas on portable pneumatic

Unread postAuthor: jackssmirkingrevenge » Tue Apr 19, 2011 12:04 am

shiny455 wrote:i am interested in making a portable very powerful gun to shoot ball bearings probly just small 6mm ball bearings. first i thought i would try make a spring piston gun but after looking through this site most people tend to avoid spring piston guns.


Good man.

i also want to steer away for combustion as it seems a bit dangerous and unreliable.


Not so if well built.

Lockednloaded wrote:I know its my own creation...but it really meets all of the criterium


hehe that was just the launcher that came to mind :)

On a small side note, I hate to be a pedant ( :roll: ) but a criterium is a bike race.

You were thinking of criterion... though that's singular, so the correct word to use in this case is "criteria" ;)
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Unread postAuthor: shiny455 » Tue Apr 19, 2011 12:11 am

thanks for the help i think ill make one with a pump similar to This yes i figured out how to do the linking thingo
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Unread postAuthor: shiny455 » Tue Apr 19, 2011 2:56 am

lockednloaded would you be able to explain a little bit the piston valve in your gun. i understand how they work but i cant see how you placed yours in your gun
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Re: ideas on portable pneumatic

Unread postAuthor: mark.f » Tue Apr 19, 2011 10:00 am

jackssmirkingrevenge wrote:On a small side note, I hate to be a pedant ( :roll: ) but a criterium is a bike race.

You were thinking of criterion... though that's singular, so the correct word to use in this case is "criteria" ;)


Hey thanks, Ragnarok. :roll: :P
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Unread postAuthor: jackssmirkingrevenge » Tue Apr 19, 2011 10:07 am

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