my first air cannon (revised with pictures)

[csgunner]

This is my first air cannon, it is very simple, with just a ball valve and is filled by a tire pump. It take about 60 psi and is quite powerful. I put an AA battery about an inch into a tree stump.

[n-strike]

Nice job! Specs?

[bigbob12345]

Looks good for a first
But I would also like some specs and if possible a couple close up pics so i can see if you used DWV or not.

[starman]

Looks good for a first
But I would also like some specs and if possible a couple close up pics so i can see if you used DWV or not.

Yes close ups please... at BB....

[csgunner]

No DWV except for endcaps.

[M.J.P.]

hmmm probably should get pressure rated endcaps especially if your going to take it over 60 psi

[csgunner]

If I make another,better gun with sprinkler valve wiil use pressure rated fittings.

[magnum9987]

What velocity do you think you can achieve?
And, it is unwise shooting batteries around. They do break and leak hazardous acid into the environment. You should build a sabot and fire airsoft or something out of it.

[drex]

What velocity do you think you can achieve?
And, it is unwise shooting batteries around. They do break and leak hazardous acid into the environment. You should build a sabot and fire airsoft or something out of it.

i dont think a little MnO2 is going to do any thing to the environment its just going to end up in a land fill any ways.

btw nice gun

[csgunner]

Yea, about the batteries, i started using marbles because they're cheaper, easier to get, and fly straighter.

Specs:
I havent't measured exactley, so the lenghts might be a little off

Air Chamber- 11/2 in. PVC (about 4 feet long)
Barrel- 1/2 in. PVC (about 4 feet long)
Ball Valve- 1/2 in PVC

[STHORNE]

what was the total cost of the cannon? (not including ammunition )

EDIT: 800th post! This calls for some random smilies:

:joker: :angel10: :headbang: :laughing3: :help: :notworthy: :thefinger: :sign12: :sleepy4: :sad5: :occasion8:

and the ever-popular: :wav:

lol

[daxspudder]

Yea, about the batteries, i started using marbles because they're cheaper, easier to get, and fly straighter.

cheaper yes, but i cant find marbles at ever store in the country, of course i hope you only shoot spent batteries, firing new ones would certainly be a waste. nice job. oh fyi BB is the unofficial dwv police, but he has a point. its definitely a good/safe idea to use all pressure rated materials.

[csgunner]

Go to Dollar General for marbles-they have a bag of 200 for a dollar.

The cost of the gun was about 15$, but I already had the 1 1/2in pipe

[bigbob12345]

Because you didnt give me close ups I had to take the one pic and zoom it like nuts and I have determined that yes you do have a DWV endcap but it looks like a you have a bell reducer too, its hard to tell because of the fuzzynes when its zoomed so i may be wrong.
But even if I am wrong YOU HAVE DWV :cussing: :protest: :protest: :violent1: :tongue2:
DWV IS A LIKE A TIME BOMB THAT YOU DONT KNOW WHEN IS GOING TO EXPLODE :bom:
Please dont get pissed at me for using all caps, or the overuse of smilies

[csgunner]

I looked and the encap is DWV but the reducing is pressure rated-that and its about an inch thick righte there.

Next time will include closeups.