SpudFiles

this is a screen shot of the pneumatic GB gun im building on GGDT,it says the barrel is too long at 56". should i leave it at 56"?or make it shorter any tips?

http://img291.imageshack.us/img291/2213/ggdtnn9.png

sorry i couldnt hotlink the picture it was too small to see when i did for some reason so this link works best

set the inner diameter to 0, and leave it 0 for everything except coaxial guns

edit, it seams like the valve is shut before all the air got out, i tried 10ms opening time and got well over 500 fps

try and get real valve data

edit...

ok thanks it works now,hjow far do you think it the GB will go?

that depends on many factors you need to specify thoes before you can know for sure. expect ~600 yards...

I wouldn't think 600 yards, SpudStuff.

793 feet or about 264 yards. calculated with ggdt. so expect about 200 yards

is there anything i could do to increase the range?

A hop-up device would probably help.
(And please don't ask "what is that"... we've discussed it many times before, just use the search function...)

i wasnt gonna ask ,i searched the forums and i cant find a decent explanation of how to build/install one or what ever, there are a few threads that just say.. that o-ring my help as a hop-up, or if that pipe bends correcly it will be a hop up. is there a proper way to do make one?

"is there a proper way to do make one?"

Tap <a href="http://www.piening-propeller.com/de/gra ... g">THIS</a> ~3/4" into your barrel. I actually use a 12' version, but a smaller one will work.

JK, besides curvture of the barrel, and adding a obstruction, I know none. Also adding a strip of "friction" tape has been done by some.

ok then whats a good thing to "obstruct" the barrel with?

btw in your sig shouldnt it say "new and improved" not inproved or is inproved some fancy term or some shit?

crowley, I think that's an M.
Can't be compleatly sure, though.

Maybe I'll do a wright-up of my hop-up device... but to tell you the truth, I havn't used it enough to say (for sure) that it'll last very long, as I've only put about 15-20 rounds through the barrel.

(in short, I have a patch of rubber that I can lower down into the barrel via a screw.)

pimpmann22 wrote:<a href="http://www.piening-propeller.com/de/gra ... g">THIS</a>

is that a joke? or am i missing something?

edit, my bad

both tosser jkz

BLB do you mean something like ..you lower a piece of rubber via a screw in the barrel just enough so it skims the projectile(e.g golf ball) and makes it spin backwards when fired? keep me updated on your tests