jackssmirkingrevenge Yea, you right, it really looks like hot rod)) al-xg thx for advise, using external spring will better reduse losing of air and power. Heh... my progect goes to be long time to built :( I has not much free time now... little later I will create new topic for discussion and work...

I find 3d model that i have made some time ago, add some parts and animation, the 3rd part shows how air fills small chamber and whole system work.

Any suggestions will be great!

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My new wallpaper, cheers :) WOW Thanks)) nature-boy Thanks! that car is awsome) my friend work in truck service there lots of rusty metal, will make some photoshoots with cannon) I really want to make it multipe shoot. I'm thinking about pump-action with cartridge clip (3 or 5 bullets depends on ai...

I has completely remove valve and drill bottle about 20mm diameter like the barrel, but the piston and internal parts small to shoot full power of 20 mm barrel, so i will use 10mm barrel

more dateiled full size foto

greetings neighbor

Thanks! it's also interesting article about gas cutting for me
Will test soon and post results.
Yea, it's comletely built from stuff that I find in garage, it's GREAT idea about "post-zombie apocalypse" maybe I leave it in this style.
Thanks a lot!

Hello Spud community from Ukraine! Last sammer i have discover this forum and make my pneumatic cannon with MAPP GAS ballon & piston valve, see attach, on foto its not finished... If I right gas is stored in this ballon with preasure with 2,5 bar. I use it with 6 bar ~ 85 psi. Can this ballon take 1...