Paintball Sniper..Coming Soon...

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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jeepkahn
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Wed Mar 11, 2009 11:42 am

Just ordered 40 ft of Sch120 3/4" PVC.... Gonna build the kids a coupla paintball rifles, and may be interested in selling some of the leftover pipe...pm me if you need some...
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jrrdw
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Wed Mar 11, 2009 12:47 pm

You going to use sprinkler valve set ups for them?
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jeepkahn
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Wed Mar 11, 2009 1:28 pm

jrrdw wrote:You going to use sprinkler valve set ups for them?
Nah, prolly make them tee/piston valves, but I may get a wild hair and use 3/4" qevs, I want to make them 250+ psi capable so I'll prolly go piston valve for MOAR...

point of referance, sch120 3/4" is rated to 770psi working pressure, and if I use 1.5" sch40 for the chamber 250psi, should be ,ahem, safer...
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jrrdw
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Wed Mar 11, 2009 2:03 pm

Paint balls will handle that much pressure?
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jeepkahn
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Wed Mar 11, 2009 2:34 pm

I have no Idea how much paint balls will handle, but I also build a lot of ammo that can handle way MOAR than 250, so I just want it to be capable of the higher pressure...
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rna_duelers
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Wed Mar 11, 2009 8:44 pm

Paintballs surprisingly can handle alot of pressure but make sure you luberecate the barrel.Ohh and I wouldn't recomend using these for actualy paintball.You could end up with serious injuries such as broken ribs.
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Dgealy
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Wed Mar 11, 2009 9:05 pm

It is not the pressure that bursts the paintballs but the friction. So if you could sabot them with some paper, you could potentially use as much pressure as you want.
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Ragnarok
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Wed Mar 11, 2009 9:53 pm

jeepkahn wrote:Gonna build the kids a coupla paintball rifles
Make sure you're very blunt about what they shoot at with them - a lot of people assume paintballs are harmless. They really, really aren't if they get up to speed.

@jrrdw: Certainly. I've used them beyond 300 psi with HEAL, in spite of my brother's insistence they'd turn inside out at those pressures and speeds.
Does that thing kinda look like a big cat to you?
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jeepkahn
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Thu Mar 12, 2009 8:22 am

Thanx for the input guys, I am going to be building in a safety feature to keep the kids from getting too crazy, I'm going to have a port on the chamber with a 80-100psi pop-off that I'll be able to remove and plug when I'm playing with it... :twisted:
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jackssmirkingrevenge
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Thu Mar 12, 2009 8:27 am

jeepkahn wrote:I'm going to have a port on the chamber with a 80-100psi pop-off that I'll be able to remove and plug when I'm playing with it... :twisted:
Never underestimate kid's creativity when it comes to circumventing safety features...
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jeepkahn
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Thu Mar 12, 2009 9:33 am

the kids are also well educated in gun safety, we hunt and shoot on a regular basis, but yes, JSR isright, they can be very good at overriding safety features...
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jrrdw
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Thu Mar 12, 2009 10:28 am

Yea, just look at what they have all ready downloaded onto your computer.... :twisted:
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jeepkahn
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Thu Mar 12, 2009 1:03 pm

jrrdw wrote:Yea, just look at what they have all ready downloaded onto your computer.... :twisted:
???? Was that directed to me???
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MrCrowley
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Thu Mar 12, 2009 1:22 pm

and if I use 1.5" sch40 for the chamber 250psi,should be ,ahem, safer
Is that PVC? If so, I wouldn't take it even close to 200PSI, let alone 250.

Unless i've misunderstood you somewhere, then I apologize, but as a general rule, I wouldn't take any PVC over 175PSI unless it was 3/4" or 1".
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jeepkahn
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Thu Mar 12, 2009 1:49 pm

1.5" pvc is rated to 330psi, and the chamber will prolly only be 6" long and after deducting 1" from either end where the fittings effectively double the thickness, there will only be 4" of exposed 1.5" sch40, so from a materiel strength/failure aspect, 250psi should be fine... when the boys are using them I'll have a pop-off installed to prevent overpressurization...

would I take a 4ft long piece of 1.5" sch40 to 250 psi??? prolly not, but on a small chamber, it should be fine...
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