QEV airsoft gun

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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Is it cool?

no way!
1
4%
it's alright
5
22%
it's decent
7
30%
It's awesome!
10
43%
 
Total votes: 23
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thespeedycicada
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Nice! looks like alot of fun any idea of fps yet? I really need to get around to building a bb gun.
current projects: co-axial piston valve.Status DONE!
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blind909
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he already said about 500 fps.
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mopherman
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I know this is somat old, but its one the front page so ill go ahead and ask. how much do you recon this thing weighs? How long is your chamber?
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JDP12
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wow very nice! I like it!

I don't think you should shorten the chamber either- it looks very cool
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potatoflinger
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mopherman wrote:I know this is somat old, but its one the front page so ill go ahead and ask. how much do you recon this thing weighs? How long is your chamber?
I would say it weighs around ten pounds (just a guess). The total chamber length is probably 4-5 feet, but I recently added a ball valve to the chamber so that it cuts the volume in half when the valve is closed, and allows for slightly more powerful shots when it is open. (I'll try to add some pictures) I also recently added a marble barrel for it, and it has quite a bit of power. I'll try to get another video up soon, but my bike pump hose split, and my compressor only goes up to 100 psi, so the shots won't be too powerful.

Edit: I took a picture of the ball valve, here it is:
Attachments
The ball valve that shuts off half of the chamber
The ball valve that shuts off half of the chamber
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VH_man
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Looks nice. What kind of FPS do you get with marbles?

and you should make a metal chamber, im pretty sure your QEV can take about 300 PSI.
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potatoflinger
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VH_man wrote:Looks nice. What kind of FPS do you get with marbles?

and you should make a metal chamber, im pretty sure your QEV can take about 300 PSI.
The chamber is 3/4" black iron (similar to galvanized steel), but I'm not sure how fast it can shoot marbles.
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VH_man
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oh, wow. way for me to look. it looked like painted elbows on white PVC.......

MY BAD
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potatoflinger
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VH_man wrote:oh, wow. way for me to look. it looked like painted elbows on white PVC.......

MY BAD
You must've seen the teflon tape.
It's hard to soar with eagles when you're working with turkeys.
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