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New Cannon

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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New Cannon

Unread postAuthor: ShowNoMercy » Thu May 10, 2007 4:58 pm

This is my new plan for replacing my cannon. The chamber will be a single 100 inch long piece of 5 inch pipe which gives me around 455 cubic inches of air storage. I am using a single supah valve, becuase its all I have and then for a barrel I am going to use a 143 inch piece of 3 inch pipe. The primary ammo will be full soda cans and according to GGDT it will launch them a range of 969 ft at a 36 degree angle. This is at 100psi and with that it will have a muzzle energy of 1209 ft lbs, an M16 has 1360 ft lbs. I have a couple of questions, how expensive is that much pipe and also how much CO2 will be needed to fill the tank each time? And any ideas of a cart would be much appreciated. That sums it up, this is my summer project :)
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Unread postAuthor: Velocity » Thu May 10, 2007 5:42 pm

The 5" x 100" piece shouldn't be more than $50 at the most, and the barrel might be more expensive, because you would need to buy it in a 20' length.

By the way, a 5"x100" chamber has about 1964 cubic inches of air storage, not 455...
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Unread postAuthor: spudzinger » Thu May 10, 2007 5:47 pm

Lots of CO2! CO2 is bad!!! Lol, but anyways a lot of carbono dioxidous. Why not use air, other that the high pressure needed. Sounds like a hell of a gun! Good luck. Spud
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Unread postAuthor: ShowNoMercy » Thu May 10, 2007 7:30 pm

Ok well the volume number is what GGDT told me so I will double check that. And 50 bucks for some 5 inch pipe??! Thats a lot, I may go with double sections of 3 inch pipe instead. And why is C02 bad? I dont have a big air compressor, so its easier.
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Unread postAuthor: Orpackrat » Thu May 10, 2007 8:08 pm

Co2 is fine, Liquid Co2 in the chamber is very bad.
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Unread postAuthor: ShowNoMercy » Thu May 10, 2007 8:20 pm

I knew that, I have a long remote line and an anit siphon C02 tank so I think I am good to go.
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Unread postAuthor: Orpackrat » Thu May 10, 2007 11:09 pm

I use Co2 on all my cannons because it is simple and portable. I like quick multiple shots in the field instead of getting one shot and having to fill from a bike pump or compressor. Faster and more convienent in my opinion.
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