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which is better?

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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which is better?

Unread postAuthor: tntlly » Sun Oct 15, 2006 11:01 pm

for my next cannon i wanna make a piston because i haven't done that yet. is there much of a difference between co-axial and over-under?
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Unread postAuthor: MrCrowley » Sun Oct 15, 2006 11:41 pm

well that is the difference,one has a chamber under the barrel the other the barrel is in the chmaber,a over-under would get more power then a co-ax of the same size as the barrel takes up the chmabers volume so you just make the chamber longer.
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Unread postAuthor: tntlly » Sun Oct 15, 2006 11:59 pm

so, power wise, it just depends on your dimensions, there's no real stand-out performance difference between a typical co-axial and an over/under?
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Unread postAuthor: Infernal Maveric » Mon Oct 16, 2006 4:41 am

Well I would think that a Co-axle would preform better that a piston valve if the dimensions were correct, but then again the supah is a over-under style pistion (chamber sealing) valve.

It realy depends on the size of your chamber, size of your barrel, weight of the piston, air tightness of pistion, PSi your using.

Just make what ever feels best for you because it is ultimatly about the specifitaction of the gun you wanna make
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Unread postAuthor: jrrdw » Mon Oct 16, 2006 5:25 am

From what i read in here i would have to agree with Infernal Maveric, the co-axle delivers a straight push of air, with the over and under the air has to push around corners, slowing down the reaction time, i beleave only by milla seconds, ask Boilingleadbath, he's the math wiz!
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