Yes I agree this cannon sucks , but still, I made this cannon a WHILE ago...way back in 7th grade! (I'm in 10th grade now).
this cannon might suck comparatively, but personally, I don't think it sucks for a 12-13 year old with hardly any help.

Thanks for the feedback...Now I feel retarded!
well, anyways, i have $200 to throw around, so my next one should be much better

it is NOT DWV pipe. it is SCH-40 pipe, rated to 220 psi

Here's the first air cannon I have ever made. I made it a while ago (I was a 7th grader, with hardly any help). I just discovered this forum recently, so I decided to post it. Nothing special. :wink: Specs: Air reservoir: 4" PVC pipe, about 5-6 feet long Valve: regular sprinkler valve :) Barrel(s): ...

I have already built one air cannon, but it is rather bulky, hard to transport, and the air reservoir takes waaaayyy too long to fill. For my Second air cannon, I decided to use a two liter soda bottle for an air reservoir. I found that a half inch PVC pipe fit nicely in the neck of the bottle, but ...