Just bought a new RT from Airgun - problems already

[John Dresser]

Sorry, no plans to get rid of the old RT. I actually played NPPL events with it for years, long after electronic guns took over. I finally caved in 2001 and switched to an electro due to sponsorship so the RT has just been in the basement. I started playing with it again this year since I'm no longer a sponsored player for the first time in a decade.

Back in the day, bolt stick was very similar to the problem I am describing. You pull the trigger and nothing happens. I just put the level 10 kit in my RT and the exact same thing just happened. This has to be pretty common, what am I missing?

[MANN]

I would go up a size on the lvl X carrier. See if that helps/hurts

[John Dresser]

It had the dot carrier and 3 shims along with the shortest spring.

I tried each of the three springs with each of the 4 carriers and had the same result with all of them. The only difference was sometimes the gun leaked and a couple times it fired as I was airing it up. It never fired once the tank was on.

[Pullman]

Dump the shims and put it back together,maybe go up to the next size carrier as well, but pull the o ring you have in there now and move it into the next carrier. I know it seems silly, but give it a shot. Those shims cause more problems. The LX is super frustrating until it gets broken in. Once it is you can leave it forever, but the the break in process is a PITA

[Coralis]

This may help Level 10 instal vid

[secretweaponevan]

There might be a problem with your ASA.

Some guy on here had a heck of a time troubleshooting till he realized that earlier in the day his on/off ASA broke and would let only very little air through very very slowly.

Other than that:
Quick tuning instructions:

Remove all LVL 10 shims.
Pick 1 carrier o-ring and stick with it.
Use oil.
Use #2 carrier (2 lines, no dots) or largest that came with your kit.
Shoot 1000 shots to break in o-ring.
Move broken-in o-ring to largest carrier that doesn't leak.
Use red spring for 285 fps. Use longer spring for higher velocity or to be more gentle (fragile paint), shorter spring for lower velocity or to be less gentle (thicker shell).
If bolt sticks after encountering a jam, add a shim.

[John Dresser]

I don't even have that carrier. The largest one they sent me has a line and a dot. I'll try it with no shims.

Will a new o-ring shut the gun down completely like this?

Shooting 1000 shots is difficult when I can't shoot any shots.

[chafnerjr]

My suggestion... open the valve and check for loose teflon in the valve reg. Happened to my last project. I'd get bolt stick at higher ROF, and then shootdown.... variance between 280 and 240. The teflon wasn't blocking the reg completely, but in this case it is possible. Hey it new right? It could happen and nothing else is getting you anywhere. Get that valve apart and check it. It wouldn't be a carrier or shim thing if it worked at first and then stopped... I've got money on teflon lodged in something.

[Spider-TW]

I don't even have that carrier. The largest one they sent me has a line and a dot. I'll try it with no shims.

Will a new o-ring shut the gun down completely like this?

Shooting 1000 shots is difficult when I can't shoot any shots.

A good gauge of carrier size is to use the one that will just suspend the weight of the bolt when you hang it down over your hand. If the bolt falls off, it's probably too loose, so you put on a tighter carrier until it holds. With a little oil on the end of the stem, slide it back and forth and feel the grip each time you try a different carrier. When you get the one that works you will know what it feels like in the first place.

I have had setups that would fall off very easily that still sealed, but they only lasted about another case or so until they started leaking slowly. The markers shot real well with the loose orings, but all of these were well worn-in orings. With a new one you should let it be a little tight ("hang-able") so that when the inside wears in, it will still seal.

Is your trigger returning even though the marker doesn't shoot?

[John Dresser]

Is your trigger returning even though the marker doesn't shoot?

Yes, the trigger returns even though it doesn't shoot. Thanks for the advice on how to pick the right carrier, but since I tried all 12 variations (ever carrier with every spring) and never got it to shoot, I don't think the problem is the carrier.

My suggestion... open the valve and check for loose teflon in the valve reg. It wouldn't be a carrier or shim thing if it worked at first and then stopped... I've got money on teflon lodged in something.

That's exactly what I thought it had to be at first! I unscrewed the valve but I didn't see any though. Any ideas on where it could be lodged? In the old mags it would get caught in the horizontal spring with the grenade pin.

[John Dresser]

One of the guys on PbN figured it out.

http://www.pbnation.com/showthread.php?p=52094174#post52094174

Hmmm, you've swapped around carriers and you're still getting bolt stick. The only other thing I can think of is making sure your field strip screw and front frame screw are tightened down equally. If one is aped and the other is looser, it will cause bolt stick.

[maniacmechanic]

One of the guys on PbN figured it out.

http://www.pbnation.com/showthread.p...4#post52094174

overcomplicating a simple problem
Warbeak hangs here a lot too , congrats Warbeak your right again

[John Dresser]

For sure. I knew it had to be something simple when the gun went from being fine to not working at all so quickly. I also knew it had to be common when my RT had exactly the same issue when I first threw in the level 10.

[John Dresser]

Two problems still.

The new Rt Pro still has massive drop off. I hope it is my tank. It is putting out 900 psi but the flow might still be poor.

The second problem is that the classic RT still has the same problem we cured in the Rt Pro by loosening the front frame screw and tightening the back screw. The RT Pro doesn't fire at all. The trigger returns but the gun does not shoot at all.

[secretweaponevan]

The second problem is that the classic RT still has the same problem we cured in the Rt Pro by loosening the front frame screw and tightening the back screw. The RT Pro doesn't fire at all. The trigger returns but the gun does not shoot at all.

Turn up your velocity and/or don't use an LP tank.