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Frist coax air gun

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Frist coax air gun

Unread postAuthor: wyz2285 » Sun Jul 04, 2010 9:45 am

well I build this gun in about 1h,as a frist try at coax air guns.
It works very well,the piston opens pretty fast :D .The gun is made of 80cm of steel tube and a 6mm tube for barrel.The piston is pilot by a blowgun valve,operatin presure:20-200psi.The scope is 4*38,I bought is for 35 euro.
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Last edited by wyz2285 on Sat Jul 24, 2010 11:21 am, edited 1 time in total.
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Unread postAuthor: clemsonguy1125 » Sun Jul 04, 2010 1:07 pm

Great first coax, must be powerful, only thing I could say is that it has a largish pilot, but where you have the trigger I dont see a better way, any chance of a video.
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Unread postAuthor: jackssmirkingrevenge » Sun Jul 04, 2010 1:27 pm

Good first effort, the pilot area is rather large but hey, if it works, it works.

Why the ball valve though? Does it fire when you disconnect the schrader?

Since you're working with metal, a good way to get more power would be to use a smaller chamber and up the pressure using a shock pump to take it to 300-400 psi.
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Unread postAuthor: ilovefire » Sun Jul 04, 2010 8:06 pm

hey man this thing looks awesome, great work
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Unread postAuthor: chinnerz » Mon Jul 05, 2010 1:49 am

Wow nice work on the first coax mate!

I agree with Jack, with a pilot that size, disconnecting a schrader shouldn't cause the gun to discharge. and more pressure = more fun :D

Also have you modded that blowgun to increase flow?
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Unread postAuthor: wyz2285 » Mon Jul 05, 2010 2:46 am

jackssmirkingrevenge wrote:Good first effort, the pilot area is rather large but hey, if it works, it works.

Why the ball valve though? Does it fire when you disconnect the schrader?

Since you're working with metal, a good way to get more power would be to use a smaller chamber and up the pressure using a shock pump to take it to 300-400 psi.
the ball valve is only for safety,because some times the schrader lose air when the presure is more than 150 psi.
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Unread postAuthor: wyz2285 » Mon Jul 05, 2010 2:48 am

chinnerz wrote:Wow nice work on the first coax mate!

I agree with Jack, with a pilot that size, disconnecting a schrader shouldn't cause the gun to discharge. and more pressure = more fun :D

Also have you modded that blowgun to increase flow?
well i didn't mod the blow gun valve, wasn't necessary.
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Unread postAuthor: jakethebeast » Mon Jul 05, 2010 3:47 am

looks great, you should pump up the pressure to get more power :twisted:
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Unread postAuthor: wyz2285 » Fri Jul 23, 2010 4:06 am

it's hard to fined a pump that's pump up more than 10bar :roll:
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Unread postAuthor: Crna Legija » Fri Jul 23, 2010 6:27 am

just get a shock pump theres like 100's on ebay
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