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Airsoft 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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Airsoft Sniper

Unread postAuthor: spudthug » Fri Jun 15, 2007 8:45 am

hey guys.. i have been planning this for a while i jsut never got around to it... i am making an airsoft sniper.. but i have a few questions and i need some suggestions...

Specs.

1. main valve- QEV
2. Pilot valve- modified blowgun
3. Filling valve- Schrader
4. Barrel-??? (maybe brakeline? what size for airsoft bbs?)
5. barrel length-???? (can you get brakeline in like 3 foot lengths?
6. barrel cover ???? (i need something so the barrel wont bend waht is the best to use so that it still looks cool??
7. chamber-1"x8-12"
8. Red dot sight and laser sight...
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here is the diagram of what its going to be like
IMG_0441.JPG (17.47 KiB) Viewed 683 times
4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: Suppressive Fire » Fri Jun 15, 2007 8:51 am

First off this should be in the bb/airsoft area.

Best airsoft barrel is 9/32 brakeline but 5/16 is more commonly available. Biuld the entire gun inside a pvc frame. It will look cleaner and be more durable. I'd use 1.5 - 3 ft length for the barrel depending on preference.
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Unread postAuthor: Specialist » Fri Jun 15, 2007 8:53 am

if i where you i would just make a inline votex rifle or a cloud like mine. its designed to be a sniper rifle. http://www.spudfiles.com/forums/false-denial-t8761.html and no offense but it looks like a marble sniper rifle more than a bb rifle. you should try both a marble/paintball and a bbmg like mine.
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Unread postAuthor: spudthug » Fri Jun 15, 2007 9:02 am

i dont want to waste 5 million bbs a minute...i want a sniper... no offense but i do not like the look of that gun...i dont like that other guys cloud that is covered in pvc either...i like bare metal...so all pvc is out of the quesdtion....oh yea btw this gun is all metal....

so i need a good pipe to shroud it still (what size and type?)

is brakeline availiable in 3 feet lengths?


thanks all!

Edit:

did anyone ever notice that airsoft bbs fit perfectly in most 1/8 pipe?

on that note what is .269" in mm
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4" piston valved cannon-half done..( i spilt my cement...)

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Unread postAuthor: potatoflinger » Fri Jun 15, 2007 11:07 am

The Pep Boys store that I buy all of my brakeline from sells it in three foot sections, so you might be able to find it in three foot lengths.
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Unread postAuthor: Specialist » Fri Jun 15, 2007 11:22 am

at ace the helpful place they have 5/16 copper pipe for like 40¢ a foot. its a good deal too. the cloud i built i started with nothing expect the primer and glue and it was only $25.
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Unread postAuthor: spudthug » Fri Jun 15, 2007 12:26 pm

how well does 5/16 copper fit airsoft bbs?

on that note what is .269" in mm? again..
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Unread postAuthor: hi » Fri Jun 15, 2007 12:49 pm

if the ID is .269'' then airsoft bb's are a little small because they are 23 caliber.

so the barrel would be 0.039'' to bigl, which probably wont matter to much.
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Unread postAuthor: iPaintball » Fri Jun 15, 2007 12:58 pm

Even though they're more expensive, actual airsoft barrels air by far superior to any brakeline or pipe barrels. They are machined to within a few thousandths of an inch of the airsoft bb, and they are perfectly straight and smooth. As for the barrel cover, 1/2'' pipe nipples with some teflon tape wrapped around the ends of the barrel work great.
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Unread postAuthor: jackssmirkingrevenge » Fri Jun 15, 2007 1:05 pm

spudthug wrote:on that note what is .269" in mm? again..


That would be 6.83mm. for airsoft BBs you want as close to 0.236" as possible.
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Unread postAuthor: Hotwired » Fri Jun 15, 2007 2:50 pm

You'll only need a small chamber and QEV for this setup if all you're firing is a single BB.

The chamber in the sketch would be excessive if it's to scale.
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Unread postAuthor: MrCrowley » Fri Jun 15, 2007 5:10 pm

Personally I use a weed-sprayers nozzle as the barrel, I've used it on my clouds and it works fine, there is a very very small gap and the nozzle pipe is usually about 2' long on most weed-sprayers and I just bought the nozzle seperatly for about $3NZD which is like $2.2US. Mine also came with a 1/4" adapter like a compression fitting on the barrel so its easy to connect to your valve/cloud/vortex.
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Unread postAuthor: Fnord » Fri Jun 15, 2007 6:38 pm

wait, did I miss something? cant you just use a blowgun for a valve instead of a qev? I mean, isnt it kind of overkill for a single shot gun?

I got a 40" lenght of brakeline for my bbmg. It was like $3.50 usd

You could sleeve the barrel in 1/2 or 3/4 pvc, or conduite pip for extra strength.

For a 3 foot barrel, a chamber of just a few cubic inches will work fine.
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Unread postAuthor: shud_b_rite » Fri Jun 15, 2007 7:11 pm

I have tried making bb guns out of blowguns. It doesn't work that good but it still works. I don't think a qev is overkill, but I think it is overkill to have such a large chamber.
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Unread postAuthor: spudthug » Fri Jun 15, 2007 7:15 pm

my chamber is going to be 1 inch...maybe 6-10" long

i need something for a cover that wont bend or let the brakeline bend...

maybe 1/4 copper tubing?
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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