Mag won't fire!

[sisco87]

Well i just got the last part for my first project mag, which was an RT valve. And i'm having some trouble with it.

So here's my setup-
RT valve with lvl 10 and ult
classic rail w/ classic sear of course
ule body
and logic 90* frame if that has to do with anything
The tank i'm using is a 68/30 preset- 850 psi

The very first time i aire'd it up with everything put together, it shot 3 times real fast w/out me even pulling the trigger.
Everytime i air it up and try to shoot it just doesn't fire.
There is resistance in the trigger. I pull, it doesnt do anything, and the trigger goes back to normal position.

I've tried turning the velocity all the way up, it didn't do anything.

Anyone know what the problem could be?

Edit 6/3/06 - I got the Blue ULE body so i could actually test it out again. I did oil the heck out of the thing, but i was figuring out the problem was it would leak down the barrel when the valve would come apart just a little bit from the body. So i just pushed it in as close as possible and tightened the field strip screw and that did the trick. No leaking and it's working right!
I wouldn't say it's prefectly tuned and everthing 'cause it does "chuff" sometimes and leak a tiny bit every now and then when shooting. But close enough.
Oh and here's some pics for you guys that i just took.
<a href="http://www.jayloo.com/photo_gallery/show_pic.html?pIMAGE_ID=37168"> <img src="http://www.jayloo.com/files/pics/37000/RT_Mag_001_tn.jpg"> </img></a>
<a href="http://www.jayloo.com/photo_gallery/show_pic.html?pIMAGE_ID=37170"> <img src="http://www.jayloo.com/files/pics/37000/RT_Mag_004_tn.jpg"> </img></a>
<a href="http://www.jayloo.com/photo_gallery/show_pic.html?pIMAGE_ID=37169"> <img src="http://www.jayloo.com/files/pics/37000/RT_Mag_003_tn.jpg"> </img></a>

[paintman1142]

you have one to many shims in the ULT probally

[blinky1041]

Your trigger rod might be too long. It should be adjusted to 1.99 inches I believe.

[Ken Majors]

I'm having the same issue with a parted together mag that I have been tinkering on for a few months.

ULT shims all removed, pin length toyed with, increased input pressure, and increased velocity...= Nothing but a really springy trigger that doesn't fire.

ULT shimmed to the MAX, pin length measured to spec, decreased input pressure to 850psi, and increased velocity to the Max. = Nothing but a very springy trigger that doesn't fire.

Thinking I need to send it to someone. It is a backup gun that was scavenged from parts that I used to make my E-Tac. Xvalve w lvl X, original EMag rail and p/f left body, and intelliframe. Sure would make a nice backup...if I could get the darn thing to shoot

[sisco87]

Ken- yeah it's no fun not having it shoot...

It could be the trigger rod, but I don't think i'll be able to adjust considering that it was loctited by whoever had it before me. And i mean the super loctite so it wont even buge

[Coralis]

are you guys using level 10s could be bolt stick

[sisco87]

are you guys using level 10s could be bolt stick

yeah, it has lvl 10.
i just got the valve and who i got it from says he went through a whole tank to check it and its completely tuned right and everything....

[kingpen509]

yeah, it has lvl 10.
i just got the valve and who i got it from says he went through a whole tank to check it and its completely tuned right and everything....

That would be me! I did indeed shoot the crap out of that valve before I sent it and it is in perfect working order. You did tell me though that you pieced this thing together and the rail, trigger frame, and sear have never been a "unit" and that you have never had a "working valve" on this set-up before. So what you need to do it take an afternoon and get a lighter, heat up your sear and proceed to adjust it until you marker is blazing.

What else you might try to do is gas it up and if it still doesnt fire take plastic rod maybe a part of a clothes hanger and push the bolt back down the breach, if the sear latches on the front of the bolt and you are able to take at least one shot before it gets caught up again then yes you need a larger carrier for you specific set-up.

Let me know if I can help more in any-way! Shoot send me the gun and I'll get it rippin for you!

[sisco87]

I'll have to try those out and see if that gets it working.
I might also even take you up on that and maybe send it to you
Thanks kingpen

[sisco87]

Still having trouble you guys....

The sear won't adjust at all. I've tried everything with that.
And i tried moving the blot back with a rod or somehting, but it just doesn't move. Nothing happens.

So it's still the same thing. I air it up, there's resistnace on the trigger, and it just doesn't fire....

[mnjackal]

I was having the same problem and i finally started loosening the screw that holds my valve in and that did the trick. I made the mistake of tightening that screw with an allen wrench. It should be hand tightened or a little looser than that.

[flyingpootang]

Are you running a second reg?

[flyingpootang]

Edit: How many shims in your ULT?

[sisco87]

No second reg. and i hand tighten the field strip screw...

Another thing i noticed is there is a slight gap between the valve and the body. it's really small, but i don't know if the valve has to be totally up against/into the body or if a tiny gap makes a difference. That making any sense?

[kingpen509]

That little gap is fine! No cause for concern!

No second reg. and i hand tighten the field strip screw...

Another thing i noticed is there is a slight gap between the valve and the body. it's really small, but i don't know if the valve has to be totally up against/into the body or if a tiny gap makes a difference. That making any sense?