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simple co-ax with attached stock

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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simple co-ax with attached stock

Unread postAuthor: chinnerz » Thu Jan 14, 2010 10:01 pm

this was my first attempt at a coaxial valve, so be nice

the piston was cast from hot glue, and uses a 2mm thick piece of rubber to properly seel the barrel.
barrel is made from a hollow 10mm OD aluminium rod
the coax valve is made from pvc,
I’m using a modded blow gun for the pilot valve.
the stock is made from pine and painted with an urban camo.

im planning on running it at 100 psi

picture time

Image

Image
By chinnerz2, shot with E5700 at 2010-01-14

Image
By chinnerz2, shot with E5700 at 2010-01-14

Image
By chinnerz2, shot with E5700 at 2010-01-14

Image
By chinnerz2, shot with E5700 at 2010-01-14
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Unread postAuthor: twizi » Thu Jan 14, 2010 10:04 pm

amazing
i would have just used a 6mm barrel but still you should put a steel of brass chamber so you can crank up the presure

love the stock 8)
how did you checker the wood
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Unread postAuthor: chinnerz » Thu Jan 14, 2010 10:14 pm

yeah i have no tools for metal work so yeah kinda out of the qurstion :P

twizi wrote:amazing

how did you checker the wood


i dont understand
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Unread postAuthor: twizi » Thu Jan 14, 2010 10:16 pm

chinnerz wrote:yeah i have no tools for metal work so yeah kinda out of the qurstion :P

twizi wrote:amazing

how did you checker the wood


i dont understand

what do u mean u just go to home depot or lowes and buy some metal pipe fitting put some teflon on their done


were the grip is thats called checkering i belive
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Unread postAuthor: chinnerz » Fri Jan 15, 2010 1:18 am

ahh i c, the grip was done with a dremel and a wood carving bit. and im in Australia, the closest to what parts you are talking about at made from cast iron for me. cast iron isnt rly the stuff you want to use.
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Unread postAuthor: jackssmirkingrevenge » Fri Jan 15, 2010 1:31 am

Very nice for a first effort :) let's see it in action though!

I like the ventilated trigger, nice touch. The barrel looks a bit skinny though, it would do well with an integral suppressor. All you have to do is drill a couple of ports around the muzzle area and sleeve it with a bit of larger diameter pipe, applying copious amounts of epoxy of course ;)
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Unread postAuthor: inonickname » Fri Jan 15, 2010 1:34 am

chinnerz wrote:ahh i c, the grip was done with a dremel and a wood carving bit. and im in Australia, the closest to what parts you are talking about at made from cast iron for me. cast iron isnt rly the stuff you want to use.


Galvanized fittings are everywhere here. Perhaps give them a try.

I quite like it. The stock is perhaps a little boxxy but the camo and grips look nice. Quite well made, good work 8) .
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Unread postAuthor: tghhs » Fri Jan 15, 2010 5:05 am

Awesome i love hearing about new Australian spudders.

yeh very nice i'd love to see a vid? good job
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Unread postAuthor: chinnerz » Fri Jan 15, 2010 6:49 am

fitting a scope right now, and im planning on casting wax ammo, video will be up when that is done
The barrel looks a bit skinny though

ill look into that
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Unread postAuthor: Cosmic Muffin » Fri Jan 15, 2010 6:53 am

more aussie spudders, good to see. nice work man
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Unread postAuthor: maverik94 » Fri Jan 15, 2010 4:06 pm

Nice, An unconventional stock, and cool camo, I like it!
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Current Project: None, I'm in Spudremission.
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Unread postAuthor: FighterAce » Fri Jan 15, 2010 4:29 pm

Thats very nice job! It kinda looks like P90 but with longer barrel :D
You have huge potential to make gun replicas especially with the dremel. Its a perfect tool for woodwork and it makes every project go faster. You could get one of those routing knives for it and make holes in the wood to encase the air tank so it looks cleaner.

I tell ya... my first air rifle with wood on it was pure ugliness... this actually looks pretty good

btw. what dremel you got? I'm using a dremel 300 series
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Unread postAuthor: chinnerz » Fri Jan 15, 2010 8:40 pm

FighterAce wrote:btw. what dremel you got? I'm using a dremel 300 series


i am not too sure on that one as my mate is using it atm, but if i tell you that it came in a toolbox with a bunch of bits, and it has an electronic speed guide on the back which essentially has a screen on the back which tells you on a scale from 5 to 28 how fast it is going would you have any idea which one it is?

Nice, An unconventional stock

yeah the plan was to make a bulpup sniper rifle
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Unread postAuthor: c11man » Fri Jan 15, 2010 9:55 pm

i have to agree with everybody else on the fact that this is an amazing gun. the stock, the paint the sight, and the fact that it is about 27.39 times better than most peoples first cannon.

but you seen to miss the point of a coax gun. the ammo is meant to go all the way back to the piston for max preformace.
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Unread postAuthor: chinnerz » Sat Jan 16, 2010 1:53 am

but you seen to miss the point of a coax gun. the ammo is meant to go all the way back to the piston for max preformace.


i don’t think so, it has a breach to make reloading twice as fast and it gives me the ability to use shot shells (which i make), but i see your point, it would be far more efficient if i left it as a muzzle loader
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