SpudFiles

If you tilt the mag over to one side, there will be less weight of the marbles on the paddle, and you'll have a better line of sight over the gun..

True. Clever...

I was wondering if I should make the mag like that, but I thought straight up and down would be better.

But, it's done now!

VERY nice! I like the mag design. looks good, too. how much does it weigh, and what can it shoot through?

Doesn't weigh much, but it put dents into a wooden fence, (the "dimples"), at about 30 yards away, (when I missed the box in the above video).

But, if I wanted power, I wouldn't have made it fully automatic. You sacrifice a little power for a higher rate of fire because you have to make a small chamber that can be filled quickly.

Thats a pretty alsome rig you gat goin on but wouldnt a paintball gun work just as well with some marbles in it im not sure so tell me if im wrong. Id try it but my gun is to expensive for me to mess up.

Super Gun and Super Job. I love the paddle trick. I was suprised to see you build a gun that does not use a piston. I have just always seen you praise piston guns and thougth this may be one. Again Great Job.

Yeah, a piston wouldn't have reliable enough equalization properties for this to work with one. I decided to use a quick-exhaust because they equalize only one way with pretty good flow, and you can pilot them with pretty much near anything.

Doubt it... Could i vent it if I had a plastic end cap on the back of the qev and i hit a nail through it?

Actually, you probably could pilot it that way, (maybe even before you remove the nail).

On my copper cannon, the piston seals good enough so that I can pilot it just by cracking the ball valve halfway open, (albeit, it takes a few seconds). A Q.E.V. piston seals perfectly in it's carriage and only let's air through the "CYLINDER" port from the "PILOT" port because of the way it's shaped. ANY drop in pilot pressure will fire that sucker.

Thats the second time I've been working on an air cannon design I thought hadn't been done, then found a similar existing system.

Ah well, only so many ways to make a semi or full auto pneumatic.

I was thinking of a different feed system, different chamber/barrel layout and a custom piston but its broadly the same firing mechanism using a relief valve to trigger the piston/qev at a set pressure automatically.

Great design anyway

I'd hate to put a lawnmower over that grass though

markfh11q wrote:Actually, you probably could pilot it that way, (maybe even before you remove the nail).

If the nail didn't remove itself.

what kind of air compresser do you use??? mine always stops at about 30 psi. lately its haset been working past 20-25 psi and i need to buy a new one. hope u can help me !!!

Whoa. Are you using some sort of car tire compressor?

cool dude. ive built marbleguns with sprinkler valves before but where did u get that sprinkler valve ive been lookin for 1 like that in a long time..

ahhhhhummmmm its a QEV

He probably got it of McMaster im not sure so don't hold me to it, I do know you can get them of McMaster on page 913 or something