New Xvalve problem

[rabidduck457]

I bought a new xvalve to drop into my old school minimag. I had level 10 in the old phase two valve. The xvavle has level 10. I put it all together, dropped some oil in the asa. Aired it up while holding down the trigger ( told this was a good idea for some reason), it fires once and then just makes a whooshing sound as air comes out and it doesn't recock. I tried searching around a bit but I am at work and want to have it ready to go by tomorrow. I don't know what other info to give you guys. It has a new double frame on it but it aired up with the phase 2 + L10 last night just fine. Any help would be greatly appreciated.

EDIT:: oh the xvalve has ULT as well. Think thats it though. For serious this time

[Ruler_Mark]

check your sear where it catches the bolt for wear.

also check to see if the trigger rod goes forward too far, ie you want a 1mm gap ish between the rod and back of the trigger

[michbich]

When you say "whooshing sound", does it leak as well? I would start by raising the velocity.

[Spider-TW]

Things you can check before tomorrow...

1) New bolt spring?
2) Largest L10 carrier that doesn't leak?
3) rail bushing is in?
4) try changing the tension in the field strip screw from finger tight to light wrench tight.
5) try a light oil on the bolt shaft until the powertube oring is broken in.
6) oil the ULT directly.

[michbich]

Like spider said, the carrier might be too tight.

Also, try changing for a lighter spring.

So the 3 things i would check:

-higher velocity
-check if carrier is too tight
-replace spring with a shorter one

[rabidduck457]

Well I tried a shorter spring ( only other size i had that was smaller) and the longer one. I also made sure to oil the parts but when I said new I meant new to me. It was a working (as far as I know) xvalve+L10 with ULT that I bought out of a part out here. He seemed like a good enough fellow so I am pretty sure it was working before hand and looked to have been well maintainted and oiled. I will try the field strip screw and the trigger rod gap. I am pretty sure it is more than 1mm ish heh. How do I adjust that? Still learning about these mags but the more I learn the more impressed I am with them.

EDIT:: the carriers, those are the little brass pieces right? Not sure how they work heh. I do have a few of them that came with my other level 10 set up but like I said I believe it was a fully working unit before hand. Have to remember to try adjusting the velocity too.

[michbich]

Yes, the carriers are made of brass. They go in the powertube. If it i too tight, the bolt will have too much resistence. If it's too loose, it will leak down the barrel. To check, remove the valve from the marker and slide the bolt on the powertube. If you need to apply force to slide the bolt, you need a bigger carrier. I you encouter 0 resistance, you probably need a smaller carrier.

To adjust the trigger rod. Air up the marker, mesure how long it is and the lenght needed. Remove the sear and adjust the rod lenght by un/screwing it to obtain the lenght desired.

Did you try to raise the velocity?

Edit: It might have been a working valve before receiving it. But since it's a different bolt, it will need carrier adjusting. The carrier will vary from bolt to bolt, tha't why there are several sizes.

[rabidduck457]

Its the same bolt that came with it. Its a complete drop in to my body/frame.

[TwilightG]

Kinda sounds like bolt stick to me. I agree w/ the others and try the next largest carrier (be sure to use the same inner-carrier-oring)

Before you try anything, try pressing your finger against the bolt when the air starts leaking and see if it fixes the problem. If so, definitely bolt stick... too much friction.

I know it sounds silly, but make sure the carrier is facing the right direction. If wrong, it could create bolt stick.

Does it happen to leak when you have the trigger held? Then it's the on/off (ULT)

[Spider-TW]

If the valve had been sitting for a year or two, the oring may have hardened. If you have a new one, you can squeeze them and feel the difference. An oring that was perfect a few months ago can be too hard now.

[rabidduck457]

I see really i have no idea where the carriers go. Anyone have a pic or can explain it rather well? I tend to be a bit dense so pics help ha

[Ruler_Mark]

http://www.automags.org/resource/level10/index.shtml

[Thanna]

I think it might be the ULT. My friend swapped out his classic valve for an xvalve w/ ult and it turned out that there wasnt enough shims in it... I think he used 5/7 ult shims (I think 3 lvl10 shims = 6 ult shims) before it started to work correctly. Good Luck.

[secretweaponevan]

Just read your first post.

You have a leak in your on/off. Holding the trigger on gas up turns off air to the bolt if the on/off is functioning properly. Yours didn't shut off. You have a leak in your on/off top o-rings.

Replace them and all should be well.

[rabidduck457]

Yeah the ULT on/off o rings were dry...tossed a bit o lube on them and now it will shoot once upon gassing up then nothing. I now feel a bit of resistance on the trigger rod though. I have changed nothing with the sear/rod or anything. More lube or is it time to start looking in another area? Seems like it may have been a combination of problems not just one. Once again thanks for the help