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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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Unread postAuthor: frozebyte » Fri Jun 26, 2009 2:11 am

Mods please remove this, thanks.
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Last edited by frozebyte on Wed Jul 22, 2009 8:45 am, edited 6 times in total.
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Unread postAuthor: far_cry » Fri Jun 26, 2009 4:42 am

will.
frozebyte wrote:I am still not sure about the dimensions of the chamber and barrel, and also how the piston system works, but i just made an attempt to try it out.


before you start build a canon you should know how all this thing work
you can search the forum how to , to get some idea

here you can see how the piston valve works

http://www.spudfiles.com/forums/piston-valves-explained-visually-t8157.html
and here you can see how to build one

http://www.spudfiles.com/forums/self-closing-piston-valve-brass-fittings-t17609.html
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Unread postAuthor: frozebyte » Fri Jun 26, 2009 4:47 am

I went there before, but im not sure if my piston would work. If the air that comes in seals the barrel and fills the chamber, and the piston gets pushed back when the pressure is released, will it work?

Check my diagram and see whether its right, thanks.
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Unread postAuthor: cannon monkey » Fri Jun 26, 2009 9:19 am

it should :) just go for it if u can make it so u can take the piston out if anything goes wrong
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Unread postAuthor: frozebyte » Fri Jun 26, 2009 9:57 am

i made the piston and fitted the parts together already, could i have a tip on whats the best way to use a normal bicycle pump to fit into the nipple?

comments on the barrel/chamber?

Thanks.
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Unread postAuthor: MRR » Fri Jun 26, 2009 10:43 am

I build this adapter for one of my guns and it works great.
This way you can use a bike pump or a compressor.

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Unread postAuthor: frozebyte » Fri Jun 26, 2009 11:19 am

Thanks for the tip! sorry for the trouble but may i know what is that adapter made of? especially how you got the bicycle valve thing connected to the fittings.
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Unread postAuthor: MRR » Fri Jun 26, 2009 12:39 pm

It's a quick connector to 1/2" male. I drilled a hole into the 1/2" end cap and put the shrader trough it. The base of the shrader is rubber so that the pressure push against it and seals.
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Unread postAuthor: frozebyte » Fri Jun 26, 2009 12:48 pm

Oh so no permanent fixing of the shrader is required, thanks!
I've seen your how-to on the piston valve for copper fittings, and wondered if you would have comments on the different piston that i use?

could i pm you to discuss some things? or use msn?
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Unread postAuthor: MRR » Fri Jun 26, 2009 12:59 pm

pm is ok for me.
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Unread postAuthor: frozebyte » Fri Jun 26, 2009 1:24 pm

thanks MRR, hope its fine with you to be asking lots of noob questions, its fine if you don't want to answer them, just inform me. I need lots of tips on barrel & chamber and piston valve.

Thanks!
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