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Need some serious help...

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Need some serious help...

Unread postAuthor: wilonpill » Tue Jul 03, 2007 5:33 pm

Ok, before anyone gets pissed, I searched and just got confused.

My dad accidentally destroyed my last cannon and I want to build a new one, and he agreed to pay for it.

My question is, what kinda costs am I looking at if i wanna build a cannon using my paintball air tank, and what kinda parts should i be looking at?I'm not sure on the size of the threads, but the tank is 70ci/4500PSI and its regulator puts out around 750PSI. I understand I will need another regulator that can bring the pressure down to about 100PSI, and i will need a way to connect said regulator to a cannon.

I plan on using some sort of ball valve, because electric sprinkler valves are too complicated and from what I've seen expensive. I figure i will shoot small potatoes and nerf rockets, so a 2" barrels should fit the bill.

Thanks for the help guys.
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Unread postAuthor: sandman » Tue Jul 03, 2007 5:39 pm

sprinkler valves are only 20 dollars and the tutorial on how to mod them is very easy to follow

i think that u will have to buy the other regulator first to see what kind of output it has and then u can see what u need for your cannon

but im not the god of pneumatic cannons so dont take my word as gosple
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Unread postAuthor: wilonpill » Tue Jul 03, 2007 5:56 pm

sandman wrote:sprinkler valves are only 20 dollars and the tutorial on how to mod them is very easy to follow

i think that u will have to buy the other regulator first to see what kind of output it has and then u can see what u need for your cannon

but im not the god of pneumatic cannons so dont take my word as gosple


I think I'll see if i can find a used regulator with an adjustable output. That should run me around 25$ if i can get a good deal.
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Unread postAuthor: mike1010 » Wed Jul 04, 2007 2:43 am

ill mod a sprinkler valve for free just pay shipping and send me the parts its supper easy
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Unread postAuthor: wilonpill » Wed Jul 04, 2007 10:13 am

mike1010 wrote:ill mod a sprinkler valve for free just pay shipping and send me the parts its supper easy


Well, if i was to get into this type of thing i would have to eventually learn how to do it myself. Thanks for the offer, but i think I'll be able to manage modding without too much damage to the valve...or myself.

BTW, do you guys think using 12grams would be simpler and yield the same results?
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Unread postAuthor: turbohacker » Wed Jul 04, 2007 11:06 am

You will go through alot of 12grams. You HPA setup is the best bet. Geta reg from here... http://www.palmer-pursuit.com/ecom/product_info.php/products_id/493?osCsid=83436053e4f40030487220d2bd7f7344

And here is a remote line so you can mount your HPA tank anywhere...http://www.speedytoys.com/shop/item.asp?itemid=1145

And, to skip a step, here is both of them together...http://www.palmer-pursuit.com/ecom/product_info.php/products_id/499?osCsid=83436053e4f40030487220d2bd7f7344

I would defanately reccomend a modded sprinkler valve, they are much faster and easyer to operate than a ball valve (they run about $20 with the blow gun too) http://www.spudfiles.com/forums/modding-a-sprinkler-valve-t305.html
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Unread postAuthor: sandman » Wed Jul 04, 2007 12:25 pm

lol, turbohakcer i just saw that we have the same post count :)

and i would go with the HPA thing like turbohacker said
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Unread postAuthor: Hawkeye » Wed Jul 04, 2007 12:30 pm

What was your last cannon? Have you forgotten how you made it?
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Unread postAuthor: wilonpill » Wed Jul 04, 2007 1:20 pm

Hawkeye wrote:What was your last cannon? Have you forgotten how you made it?


My last cannon used a compressor and a ball valve.

turbohacker wrote:You will go through alot of 12grams. You HPA setup is the best bet. Geta reg from here... http://www.palmer-pursuit.com/ecom/product_info.php/products_id/493?osCsid=83436053e4f40030487220d2bd7f7344

And here is a remote line so you can mount your HPA tank anywhere...http://www.speedytoys.com/shop/item.asp?itemid=1145

And, to skip a step, here is both of them together...http://www.palmer-pursuit.com/ecom/product_info.php/products_id/499?osCsid=83436053e4f40030487220d2bd7f7344

I would defanately reccomend a modded sprinkler valve, they are much faster and easyer to operate than a ball valve (they run about $20 with the blow gun too) http://www.spudfiles.com/forums/modding-a-sprinkler-valve-t305.html


Though Palmer always makes and sells quality products, they are a bit expensive. IMO, too expensive for just a cannon i wanna build cheaply.

Do any of you guys know where else i could grab an ok regulator?

All the paintball ones are like 60$, and that is too much. It is starting to look like this project will use 12grams.
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Unread postAuthor: WOW!! » Wed Jul 04, 2007 1:33 pm

Why not build a phenumatic and then use a shrader valve, and then get a 12g adapter for filling tires? That would work for a smaller cannon.
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Unread postAuthor: pyrogeek » Wed Jul 04, 2007 1:59 pm

The Evil Detonator is supposed to be pretty good. And it's cheap, like under $30 if you shop around. There is one downside, you have to break it in with like a case or two of paint before you get the consistancy and accuracy. After that though, I heard of it shooting 300fps on a paintball gun over and over.
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Unread postAuthor: wilonpill » Wed Jul 04, 2007 8:02 pm

WOW!! wrote:Why not build a phenumatic and then use a shrader valve, and then get a 12g adapter for filling tires? That would work for a smaller cannon.


I like this idea. Where can i get one of these?
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Unread postAuthor: VH_man » Wed Jul 04, 2007 8:29 pm

wow........ that evil detonator regulator might be in my hands soon. i like the prospect of that. why spend 100 bucks when you can spend 30? just gotta watch out, its lowest output pressure is 100 PSI........... nothing a second reg cant handle.
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Unread postAuthor: wilonpill » Wed Jul 04, 2007 9:50 pm

VH_man wrote:wow........ that evil detonator regulator might be in my hands soon. i like the prospect of that. why spend 100 bucks when you can spend 30? just gotta watch out, its lowest output pressure is 100 PSI........... nothing a second reg cant handle.


PVC can easily handle 100PSI. I don't see the problem.
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Unread postAuthor: iPaintball » Wed Jul 04, 2007 10:13 pm

Run it un regulated. Just have a small metal chamber and a metal ball valve ror the main valve. It's way cheaper then using a regulator.
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