This Cannon, spawned from the ease of parts that already fit together.
Yes it is 2" slip/slip T. The the barrel side, it has a 2" to 1-1/5 slip bushing, cut out the lip inside to allow the barrel to go all the way through.
Then on the 1-1/2 inner barrel, the is a 1-1/2 to 2" adaper to get a 2 ...

This Cannon, spawned from the ease of parts that already fit together.
Yes it is 2" slip/slip T. The the barrel side, it has a 2" to 1-1/5 slip bushing, cut out the lip inside to allow the barrel to go all the way through.
Then on the 1-1/2 inner barrel, the is a 1-1/2 to 2" adaper to get a 2 ...

Very similar.
Is that one yours?
I personally did not find it nessesary to get that complex with the piston. I use press on sticky back felt. it gave me a decent seal, and eliminated lube. The hardest part was pealing the paper off of the back of the felt.
Simple, and still functioning perfectly.

Gaderelguitarist,
I am a nuts and bolt guy. I am more interested in if something works, more than how it looks. For you and your wood working skills, I would love to see what adornments you would add.
What better complement could a person recieve, than to be duplicated, or copied. Feel free to copy ...

By Request,
Here are some close ups of the internals.
For the bumper, I went to the dollar store, and bought a set of flip-flops. I shaped it with a dremal tool, and used JB quick to attach it. 200+ shots zero failure.
The felt on the piston, allows it to slide, no lube, and provides a minor seal to ...

Insomniac,
While that would be a very unlucky situation, a ball vavle used as a safety seal, not burst control is a tempting idea. Thanks for that input. Is this something you have done yourself, or seen done before?

Sorry about the double and tripple post, My bad,,,,, I am the new guy.
And to be sure, I will start a new post for the PET soda bottle failure.

Safety Failure,,,, That just sounds like so much fun!!!!!!

Colonel,

I will not Hydro test... I want to see a Pneumatic failure, on a pnematic cannon. With all the glory of a high humidity, 90+ degree enviroment I now live in.

Thats a +1 for the induced failure!!!!!

Well Yes Colonel clemsonguy1125,
It is a sprinkler valve. It turns out that the $11 dollar valve does a better job than the $15 valve. I could have taken a beter picture, but i figured if the looker knew what it was, they at least knew how it worked.
With the $11 valve, there is way less Humm/moan ...

Thanks for the spring info, Yes I have thought of that as a solution,, and an easy, cheap one at that. But not a real concern, just a simple reset on start up.

Ok, I only shoot at people that are informed, PROTECTED, and willing participants, and shooting BACK at me. So I would consider that to be ...

Thanks for the spring info, Yes I have thought of that as a solution,, and an easy, cheap one at that. But not a real concern, just a simple reset on start up.

Ok, I only shoot at people that are informed, PROTECTED, and willing participants, and shooting BACK at me. So I would consider that to be ...

Lieutenant Colonel clemsonguy1125,
I do, I really respect all concerns of the soda bottle. I have done my research, and extensive testing over the years, and accept any risks for what I have chosen as my air tank. I will start a new thread and specificaly attack the soda bottle air tank, and see ...

I respect the caution many of you have about the soda bottle. I will not argue there are more capable stylea of chamers out there. But not at this weight.

I am not here to argue the soda bottle, but the information can be found if you know what to look for. In short, the soda bottles sit on the ...

Ah yes, The soda bottle.
That seems to be the first thing people coment on. I have been using these soda bottles for several years on burst disk designs. The bottles are rated at 125psi specificaly for shipping and rough handeling of carbinated beverages by the manufacture. The soda bottle gets a ...

Hello Every one.
I love this web site. So much to learn, So many good designs!!!
Well, I put my little brain to work and ended up with my first cannon. It was made to be mounted on a TANK (Gocart with plywood) and I did not take a picture before one of the guys bought it off of me.
So with cash in ...