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first nerf/pneumatic sniper

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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first nerf/pneumatic sniper

Unread postAuthor: ozzioutlaw » Sat Sep 22, 2012 4:16 am

hey guys first post but always on the site looking at ideas for a gun now i came up with my own. so here it is my mussel loading sniper only tested @200psi so far but bottle and trigger valve rated for 1500psi i need to find a new pump source mine cant get any were past 200 psi any one got any ideas that'd be great,
any way here it is in its early stages (b4 fiber-glassing and paint)
not to harsh comments plz this is my first go
thanks
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Unread postAuthor: jackssmirkingrevenge » Sat Sep 22, 2012 5:28 am

Looks good for a ghetto launcher, are you using the pressure washer handle as a direct valve? You should put a BB chamber at the breech for full auto fire, HPA + BBs is fun :D

[youtube]http://www.youtube.com/watch?v=otpqK8GybcQ[/youtube]

A good cheap source for HPA is a fridge compressor, quick search on the forum will reveal plenty of link.
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Unread postAuthor: 8tonsemi » Sat Sep 22, 2012 8:21 am

Nice job especially for your first. The only thing I would say you have to add is a paint job, It will look awesome :lol:
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Unread postAuthor: mattyzip77 » Sat Sep 22, 2012 10:26 pm

great cannon. You need to get yourself a fridggy!!!
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Unread postAuthor: Fnord » Sat Sep 22, 2012 10:42 pm

Remember, you've weaken the tank a bit by drilling a hole in the bottom for that fill valve. You'll be fine with a fridge compressor(<500psi) but don't try to fill it up with CO<sub>2</sub> again. You won't have much of a safety factor.

Please do add some fiberglass work to this; you'll be one of the few people on this site who has. It's great stuff but tricky when you first start out.
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Unread postAuthor: ozzioutlaw » Sat Sep 22, 2012 11:29 pm

Thanks guys and yea I want blue camo paint on it any one have a sketch or detailed picture of how to set it up I have a small bar fridgethat I could use. And to be honest its really hard to get bb gun parts into Australia their not very keen on bb or paint ball parts coming into the country
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Unread postAuthor: Crna Legija » Sun Sep 23, 2012 12:51 am

watch out with the bar fridge some dont have a compressor but use ammonia and hydrogen to cool, they are called absorption fridges, very dangerous to open!


where in Straya are ya? im in Melbourne
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Unread postAuthor: Zeus » Sun Sep 23, 2012 5:15 am

It's not too hard mate, just need to know people.

And careful with the bar fridge, like Crna said, I had one burst in the caravan I was living in at the time, in winter. I was sleeping outside for a while, sh­it sucked.
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Unread postAuthor: jackssmirkingrevenge » Mon Sep 24, 2012 12:18 am

Here's an example of an absorbtion cycle fridge:

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And some good advice:

Technician1002 wrote:Do not open that one. Look up absorption cycle. There is no compressor.
It is full of ammonia. The electrical item is a heater. These use a boiler to separate Ammonia and water. The system is under high pressure.


http://en.wikipedia.org/wiki/Absorption_refrigerator
A single-pressure absorption refrigerator uses three substances: ammonia, hydrogen gas, and water. At standard atmospheric conditions, ammonia is a gas with a boiling point of -33°C, but a single-pressure absorption refrigerator is pressurised to the point where the ammonia is a liquid. The cycle is closed, with all hydrogen, water and ammonia collected and endlessly reused.
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Unread postAuthor: ozzioutlaw » Mon Sep 24, 2012 6:41 am

Na its nothing like that its a normal fridge with compressor I just wouldn't know were to start. Any one have any idea's
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Unread postAuthor: jackssmirkingrevenge » Mon Sep 24, 2012 6:48 am

ozzioutlaw wrote:Any one have any idea's


Any one have any photo's for us to help you better ;)
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Unread postAuthor: ozzioutlaw » Mon Sep 24, 2012 8:40 am

no but i found a great topic on here before the air tank they used was a fire extinguisher with a mig regulator good stuff :lol:
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