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barrel size

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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what size barrel

1 1/2"
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2"
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barrel size

Unread postAuthor: ajb12345 » Wed Jun 11, 2008 12:04 am

hey I was trying to decide what size barrel I should use 1 1/2" I'd 2". I want to be able to shoot paintball grenades, water balloons, and nerf footballs. I was thinking 2" but then I saw peon using 1 1/2" barrels for it so I wasn't sure. Thnx for the info.
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Unread postAuthor: Hubb » Wed Jun 11, 2008 12:25 am

You gonna have a hard time fitting a Mini Vortex in a 1.5" pipe, however, they fit almost perfectly in a 2" pipe (Sch40).
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Unread postAuthor: psycix » Wed Jun 11, 2008 4:34 am

2" has more power, 1,5" fits also smaller spuds.
If something is too small for 2" you could always fix it with some wadding or duct tape.
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Unread postAuthor: jonnyboy » Wed Jun 11, 2008 9:50 am

well I like 2'' better becuase most spuds fit better and most water balloons are to big for 1.5'' pipe.
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Unread postAuthor: blind909 » Wed Jun 11, 2008 10:06 am

Think of it this way, the bigger the bore, the bigger the destruction.
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Unread postAuthor: jonnyboy » Wed Jun 11, 2008 10:52 am

@blind
That is until your launcher only shoots it a foot or two.
BTW love your avatar
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Unread postAuthor: THUNDERLORD » Wed Jun 11, 2008 11:18 am

If you want to shoot water balloons, even 2" will be small.
A 3" or 4" short pipe would work better.
But you'll need a cardboard disc behind it probably so they won't burst in the barrel.

If it's powered by a 1" sprinkler valve 1.5" will be more powerful.
If you want to build a piston, 2" will be more powerful.

If you're just shooting for fun it's not that important.
They sell short pieces of 3" or 4" at some Home depots.
If you plan on waterplaying/Ballons those would be better IMO 8)
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Unread postAuthor: jackssmirkingrevenge » Wed Jun 11, 2008 11:31 am

What you can fit in a 1.5" will fit in a 2", though not the other way round ;)
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Unread postAuthor: ajb12345 » Wed Jun 11, 2008 9:32 pm

yah. thnx for the info. i had origanlly planned for 2in but i wasnt sure.
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