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Coaxial Question

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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Coaxial Question

Unread postAuthor: e1337 » Tue Jul 24, 2007 7:16 pm

Has anyone ever made a Golfball Coaxial? Im thinking about making one, the chamber is going to be 2ft of 3", the pilot is a 1" modded sprinkler valve, and the diaphram 3 sheets of innertube.

comment please
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Unread postAuthor: Velocity » Tue Jul 24, 2007 7:31 pm

Yes, Clide made a very powerful one a long time ago. Besides him, many other people have done it as well. Just make sure to sleeve your golfball barrel in 2" SCH 80, because 1.5" SDR-21 will implode when used as a barrel in a coaxial situation.
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Unread postAuthor: hi » Tue Jul 24, 2007 7:51 pm

i like the whole innertube idea, but it doesnt work on anything more than about 2'' pipe if the tube is from a bike. if you truely have your heart set of using an inner tube, you need one from tractor or a lawnmower.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: e1337 » Tue Jul 24, 2007 8:22 pm

hi wrote:i like the whole innertube idea, but it doesnt work on anything more than about 2'' pipe if the tube is from a bike. if you truely have your heart set of using an inner tube, you need one from tractor or a lawnmower.


I have an old go-kart tire laying around somewhere. Thats whats i'll us for the innertube.
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Unread postAuthor: Intel Xeon » Wed Jul 25, 2007 6:07 am

If you are planning on a full size and fully contained coaxial, that thing will be one heavy mother f'er. Good luck with this thing.
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Unread postAuthor: VH_man » Wed Jul 25, 2007 6:14 am

it will reduce the reciol..........

it shouldnt be that heavy Xeon. if it is, well he can deal with it.

make sure you have the ability to do interchangeable barrels!!!!!!!!!!!!!!!!!!!
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