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My first Cannnon

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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Unread postAuthor: psycix » Sat Aug 04, 2007 4:28 am

it looks very nice,
though you should use pressure rated and secondly use a better valve next time for better prestations

hint: oil the ball valve to get it opening easier and more quickly
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Unread postAuthor: DYI » Sat Aug 04, 2007 4:45 pm

Looks pretty good.
The jury rigged ball valve is ingenious, but why didn't you just use threaded adapters?
Don't ask advice from people at Home Cheapo, most of them don't have a clue what they are talking about.
Spring loading (or pneumatically actuating) the valve will yield better performance.
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Unread postAuthor: CannonCreator » Tue Aug 21, 2007 9:19 pm

I like the idea of the Extension Handle for your Ball-Valve, those things seem to always be hard to Open.
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Unread postAuthor: MrCrowley » Tue Aug 21, 2007 11:59 pm

Looks great, very clean, I can't wait till you get into the bigger stuff with bigger and better valves.

Like everyone said, DWV can handle 125psi everynow and then, but i've had 260psi rated pipe blow on me at 110psi. So you're never safe really, there is that 1/1000(numbers straight form my ass) chance that it'll blow.
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Unread postAuthor: Collo » Wed Aug 29, 2007 9:27 pm

Really good cannon but yea use pressure rated parts its a bit safer the valve etc is exelent
Collo :)
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Unread postAuthor: sjog » Wed Aug 29, 2007 9:47 pm

I agree with DYI stay away from the discount stores.
You wanted a flush bushing 4x2/4x1 1/2
Go to a plumbers supply, don't be shy tell 'em what your building
Just know what parts you need, look 'em up
They can be real helpful.
Bring coffee and they might even like ya
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