My Diaphragm Launcher+Damage pics.

[dewey-1]

Most fire extinguishers have a threaded valve port.

see this link for typical internal construction:
http://www.firesafetysupply.net/cleangu ... parts.html

[mattyzip77]

Oops sorry I didnt see the weld sorry. You cant even tell its welded. Very clean job..

[dewey-1]

The typical 5 pound FE tank will have .75-16UNF-2B threads.
So if you want to use the the existing threads you will need an adapter.

Now using an unmodified FE tank on a 1-1/2 valve is ridiculous because the ID of the pipe of the adapter will be about .5 or less inches.

You may as well use a 1/2 or 3/4 QEV not your 1-1/2!

Now do you understand why I welded a 1-1/2 coupler.

[8tonsemi]

I think Im just going to go with PVC lol. Thanks for all the help though

[mattyzip77]

Dewey helped me in the designing of my cannon and he was a big help. I have fired my cannon well over a thousand times and no problems as of yet.

[8tonsemi]

new video. post link later today.

[youtube][/youtube]

Link fixed.

[mattyzip77]

Pretty cool!! You shoulda showed the cannon at the end!!

[8tonsemi]

Sorry I showed it at the beginning of the original video but I had to cut because of time restrictions. It stands nine feet tall at the moment. I'll upload pics today.

[8tonsemi]

Here is an overview of the finished product of the launcher. And for you who haven't seen the damage video there is a link in the description of the video.
[youtube][/youtube]

[mattyzip77]

Huge improvement from the last one. Must be rather loud! Its a dust collector valve and or a pulse valve, not a solenoid. Pay no attention to what e bay lists them as. What color are you going to paint it???

[8tonsemi]

Not sure yet. Maybe like orange and black striped. And it is a lot louder now.
I cant actually shoot that often because of that reason because it scares the neighbors dog.

[mattyzip77]

Always gotta be something to spoil a kids good time. Stupid dog!!


900POSTS!!

[8tonsemi]

lol .

So it might be a while until another video of the gun shooting.

[Spud Destruction]

I shoot my cannon to shut the neighbors dogs up. hahahah i don't shoot them just the noise of the cannon going on off scares the crap out of them. Why do you think you never here dogs barking when i film my show. hahah and there is 5 next door "quiet on set!! BOOOM"

[jsefcik]

i think you should work on the cannon make it look more like a gun !, but
add some 45s nd tees!!



nice cannon dude otherwise