Instructables
This is an air cannon that I built this summer to shoot mini tennis balls to my dogs. Of course I also shoot other things like potatoes, tomatoes, apples, etc. Hope that you enjoy the slide show.
Masher0075 months ago

Danger: See link: This is not spam, but a warning. PVC will fail suddenly after a while. This was band member that hurt badly by a T-Shirt launcher explosion.

See the pictures and never use PVC to hold air, Please.

https://fundrazr.com/campaigns/1Zs3c
..

-copper tube-8 months ago

cool

Kaiven6 years ago
Interesting gun, though if you build another, give it a better design so it is easier to hold, carry, and then shoot. My firsdt air gun had no stock, my second had too big of a stock, and my last gunI built is sooo freaking huge, I put my arm through the stock so I can get some support. So just keep in ming, any gun design that is preferably compact, small, easy to wield, and shoots well is great. Nice gun for a first though ;-)
rock climber (author)  Kaiven6 years ago
Thanks for the tips. It is a bit hard to carry, but I had built smaller hand held cannon that was that had a large handle to hold onto. On this cannon I wanted to make the tank directly behind the valve for best air flow, so I made a tee shape which was one of the most compact designs possible.
I just finished version 5 Air rifle, and is is mostly S shaped. the top of the s is extended into a barrel, the middle of the S has a trigger, and the bottom of the S has a 2 wide chamber. That is how mine is compast ;-)
rock climber (author)  Kaiven6 years ago
That sounds like an awesome cannon. You should post a slideshow of it.
One problem: The tests I've done so far let it only shoot 20 ft at 30 psi :( My other gun goes like 100 ft at 30 psi... I might need to do some more tests.
rock climber (author)  Kaiven6 years ago
What are you shooting out of it, and what kind of valve are you using
Um... a tight wad of aluminum foil works well, but not in my compact gun... They both have the same trigger, a modded sprinkler valve.
Try a piston valve
Can you point to a source for a piston valve?
rock climber (author)  Kaiven6 years ago
Hmm... It sounds like a great cannon that should shoot more than 20ft. at 30psi PS The Aluminum foil sounds like a great projectile to try.
Oh haha... I know this is an old post, but I found out that only half of one of the end caps was glued on. I applied glue all the way around, and it works fine.
rock climber (author)  Kaiven5 years ago
Cool, now are you talking about your version 5 air rifle?
I think so. The compact version.
rock climber (author)  Kaiven5 years ago
Sweet!
Should I like try a video? or slideshow?
rock climber (author)  Kaiven5 years ago
Yeah, that would be great. I really want to see what it looks like.
Sorry, Currently working on an 'ible :D Remind me after I post it :P
rock climber (author)  Kaiven5 years ago
Ohhh ok.
I tested it and what works great is 2 90 degree elbows next to the tee
Yeah  ! thats good advice My best gun so far i took a bb gun pistol apart and used the handle from that as a Grip and mounted the piezo behind the trigger so i can use that !

Always a good idea to have a Sling and a stock !  A good idea for a stock is to cut a slot down  a piece of pipe Heat it up and push the pipe together and tape it .

Works great
Makler 471 year ago
Could this be used as a confetti canon?
Dumchicken3 years ago
here's mine you just duct tape it to an air compreser aim and fire
air cannon.bmp
An Ideo!
My first burrito blaster that I am in the process of building.
PCDV0103.jpg
What size is the barrel
rock climber (author)  imthatguy11255 years ago
Check the coments below
alejosbin5 years ago
(removed by author or community request)
rock climber (author)  alejosbin5 years ago
Ill have to check it out it sounds cool.
tots5 years ago
How much did it cost to build and how long did it take.
rock climber (author)  tots5 years ago
It cost me around 60 dollars i think. But i could be wrong i built it a long time ago and cant remember. I took me five minuets to put the parts together an 2 hours for the glue to dry. Although most PVC cements take longer.
aahutner5 years ago
what is the diameter of the barrel?
rock climber (author)  aahutner5 years ago
For this cannon, i use 2in. barrels and 3/4 in. barrels
I tried it and found you can use two 9 volts instead of three.
i would pneumatically mod the sprinkler if i were you
rock climber (author)  covey125 years ago
I have actually done that and it worked great, but i did not mod the sprinkler valve on this cannon because i liked that i could fire it 50 ft. away behind a shield for protection because i used this cannon for experemental shots that were very close to the target.
Yeah, that is what I use at low pressures and it works great, but sometimes at higher pressure it doesnt open as fast. I just built a new more compact version with a metal tank and for that i am using a quick exhaust valve. I would recomend using a quick exhaust valve they are sooo much better and dont need batteries.
how do you power the sprinkler valve ?
Sorry aubout the late reply. Here is a diagram:
v.bmp