SpudFiles

Hey guys this is my 1st Pnuematic cannon. It's a very cheap somewhat Ghetto-ish' looking Marble Cannon. I use a 25mm Ball Valve, a 1.5L Soda Bottle, a 1m length of Irrigation pipe and a Tubeless Tire Valve. I pump it up to 110psi and it's completely air tight. not one leak. Dont worry, I have been pumping up these sorta bottles for a long long time and have never had a blow out. I should be upgrading to a Sprinker Irrigation Valve with a Pull-pin Pressure Relief Valve as the trigger pretty soon. I've got alot of bills to pay so it's them 1st and the cannon 2nd =P Thanks alot for looking!

AUSSIE AUSSIE AUSSIE

welcome to spudfiles u did post it in the right place and as for ur photos u can just use the add an attchment section at the botem of the screen when u do a post or just upload them to a site like photo bucket and link them here

Hey, welcome to spudfiles!

Cool gun, it looks alot like mine (but mine has a plastic ball valve )

Make sure that the bottles you use are made to store carbonated drinks, and not water.

Lol I love the irrigation poly pipe (I'm Australian too) I only ever seem to see it on Australian guns, poor americans don't know what they're missing out on lol.

Nice job, rips up cans nicely. I guess you work with what you got! Measure the gerth of that soda bottle pumped up to 110 psi. I wanna know how fat it gets! lol!

Poor Americans ???

Well you are only a poor american if you can't get irrigation poly pipe. Its great stuff.

nice first pneumatic gun. kinda like my first, but with a bottle. u use the same valves as i do, did u get urs from auto 1? coz i got 4 for 10 buks and they work great. right now im working on a semi auto matic that shoots d size batteries, i hope it goes according to plan

haha thanks for the comment mate. nah i got mine from mitre 10 =P 4 for 10 bucks?! sh!t you got a good buy there! I'll have to see your semi auto when its done =D

yer i cant w8 aye, it'l probably be dun by about half way through May hopefully. u shud start building big guns, they're a lot more powerful, u'll know wat im talkin about wen u see one go.

sweet as. what ones have you got built so far? yeah i've thought about building bigger cannons but i havn't got the money....plus i love sniping with marbles =P its really weird aye, i changed the chamber from a 1.5L bottle to a 600ml and for some reason...even at the same psi...it's just so much more powerful. it shoots an extra 80 feet or so feet per sec now =D!!

mad, i have no idea why that wud happen but sounds good. so far ive built a combustion that isnt on here and i cut it up the other week coz my pool broke but it was just a simple 1 anyway. and i also have trinity, which is also a combustion, its on here in the combustion section. i have a pneumatic gun which i built last year in like october or november and im just posting it now coz i havent been on here in yonks i dont know wat to call it, have any ideas??

ah cool cool. yeah i've given up making combustions...they always explode on me hahaha

yer, trinity exploded on me, its because i was using DWV parts. they SUCK and if u make any pneumatic gun outta the stuff, it will blow up after u pump it past 30psi i think, use stuff from bunnings and plumber shops. pressure pipe, it's either PN (number indicating how much bar it can hold) or SN (number indicating how much bar it can hold). my pneumatic is made of PN 18, holds about 180 psi safely, dont wanna go past that, infact i dont even know how much i pump into it, i just no that is definatly isnt 180psi, coz thats alot.

haha yeah i know aye. i was such a noob when i 1st started. i never used pressure rated pipe. i'm lucky i didnt kill myself. with my pnuematic and plans for others, i use poly pipe. it can hold a hell of alot of psi (well enough for what i need it for) and all the fittings are threaded so they just pop together, and with that said, you can chop and change your cannons so easy. it's just great stuff.

yer, like any future guns u wanna have with massive chambers, u just screw the valve off and chuck it on the biggie 8) 8)

YES! exactly right....i should be getting myself a sprinkler valve and a pull pin relief valve as the trigger very soon. i reckon it'll be a beast with that on it =D