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Avenger Mk III (WIP)

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Avenger Mk III (WIP)

Unread postAuthor: altxf4 » Mon Jul 30, 2007 1:02 am

Here is my launcher set up for golf ball use for now. Got a tennis ball barrel in the works.

Got to paint , and set up a 3/4 Orbit or such as the pilot.

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Unread postAuthor: wannabie » Mon Jul 30, 2007 1:20 am

looks nice. is that sprinkler valve 1.5" ? what size is the chamber?
you might want to paint it though...
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In epoxy we trust.
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Unread postAuthor: Pete Zaria » Mon Jul 30, 2007 1:22 am

Good design, but a bit sloppy with the primer/glue. A paint job would make this cannon twice as good.

Looks to me like you used all pressure-rated parts (though I can't 100% tell from the pics...), good for you. Nice job sleeving the GB barrel, too.

Shortening the hose for your pilot valve might increase performance a bit - smaller pilot volume and all.

Nice project. I say paint it.

Peace,
Pete Zaria.
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Unread postAuthor: mike1010 » Mon Jul 30, 2007 2:13 am

nice job i like the golf ball barrel and i like the look of the large sprinkler valve too
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Unread postAuthor: dauphinoise potato » Mon Jul 30, 2007 7:12 am

Well done nice gun, whhat range are you getting with it?
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Unread postAuthor: spudthug » Mon Jul 30, 2007 7:32 am

im thinking the 4 inch pipe isnt pressure rated...

sweet gun! is that a 2 inch sprinkler valve!

wow all you need is a new chamber (if its not pressure rated) and paint!
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Unread postAuthor: e1337 » Mon Jul 30, 2007 8:05 am

4in sch 40 pipe is pressure rated for 220psi.
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Unread postAuthor: spud yeti » Mon Jul 30, 2007 8:24 am

Nice looking cannon (paint it) and shorten the pipe to the blowgun for better performance (less pilot volume)
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really good quote/phrase here
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Unread postAuthor: potatoflinger » Mon Jul 30, 2007 8:40 am

Great looking gun, but how are you going to add a tennis ball barrel when the golf ball barrel is solvent welded to the air chamber?
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Unread postAuthor: frankrede » Mon Jul 30, 2007 3:54 pm

indeed.
I love the purple paint job:D
ha
I like the barrel support.

@potatoflinger
Thats a good question
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Unread postAuthor: hkrivell » Mon Jul 30, 2007 7:09 pm

Looks like that sprinkler valve was freshly dug out of the ground :lol:. very nice though. I like the spacer you built between the barrel and chamber.
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Unread postAuthor: altxf4 » Mon Jul 30, 2007 7:40 pm

52x4" chamber

Yeah yeah I know i need to paint it!! I just got it to the state of firing.

ALL Parts are pressure rated. Lowest PSI rated part is the chamber at 220Psi.

Solvent welds are sloppy because i wanted to make sure i had it good!

Valve is a 2" Ranbird PEB. (work for a landscape company and this was a retrofit for new irrigation, so the valve i have was tossed...I took it!)

I am finding that i do need to very much shorten the hose like you guys said. I am actually thinking i am going to use a 3/4 orbit and solenoid dump for the pilot on the 2".

Barrel support for the tennis ball barrel will use a block of wood or plastic, and some large hose clamps. Oh and the GB barrel is not welded to the valve...it is welded to a 2" MA.
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Unread postAuthor: Pete Zaria » Tue Jul 31, 2007 3:18 pm

e1337 wrote:4in sch 40 pipe is pressure rated for 220psi.


Incorrect, sorry.

Schedule (Sch 40, Sch 80, Sch 120) is only a wall thickness - NOT a pressure rating. There's Sch40 cellular core PVC, which will do very very nasty things above about 100psi.

To be pressure rated, it needs to have "NSF-PW" and a PSI rating printed on the side of the pipe.

I'm unsure about those fittings, too. They look pressure rated but I can't quite tell the socket depth.

Peace,
Pete Zaria.
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Unread postAuthor: MisterSteve124 » Tue Jul 31, 2007 4:09 pm

yeah i agree the pipe doesn't look pressure rated. It has a flange on it like most sewer pipes do.
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Unread postAuthor: Gepard » Tue Jul 31, 2007 5:11 pm

If I ever go to the states - I'm gonna pic up some of this purple primer and PVC pipe and see just how hard it is to weld this stuff together. It surely can't be that difficult?! :lol

Well the socket depth on that pipe looks very similar in terms of ratios to the 110mm pipe I have that is pressure rated.....

Michael
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