Alpha {MWB} Tech thread

[Alpha {MWB}]

I am not saying that i am a Tech head and you should ask me questions. But that i have a couple problems i am going to combine in 1 thread. Lets start with Problem #1.
Classic RT
Lvl 7 bolt


I have recently bought an Automag RT Classic. When i got it, i gassed it up it leaked pretty bad from the banjo screw but would still fire. I took out the Banjo screw out and the o-rings pretty much turned to powder. It was weird, never seen anything like it. So I ordered an Rt classic Parts kit, replaced the o-rings. Apparently it didn't do anything, because it still leaks the same place, and now down the barrel too. When i pull the trigger while it is leaking, the air flow down the barrel is decreased. I know little to nothing about classic RT's, so i am in need of some major help. I have heard some AMAZING things about you "AO tech dudes," so it is in your hands, lol.

2nd problem listed below.



ALPHA {MWB}

[Ando]

Hmm...Hard to say what might be wrong with the rail. I have 2 classic RT's. One I've had to find some thicker orings to get a good seal. The other seals fine. Sometimes those rails just go Tango Uniform. It's known to happen. Try slowly tightening the banjo a little more with an allen key, if that doesn't fix it, slowly back it off till it seals. I wouldn't go more then a half turn back.

As for the leak down the barrel. Since you purchased a oring kit and those banjo oring were bad, they're probably all bad. Do a full oring change on it. That should get you rolling.

If you already did a full oring replacement on it. Hold the trigger down when you shoot it. If it's still leaking when held, it's a bad on/off oring, replace them. If it only leaks with the trigger at rest then you have a bad PT oring or you need to get yourself a PT spacer kit to get it working.

You probably have a spring pack in the PT. If that's the case you can stretch it back out but it's just going to happen again so it's best to buy a PT spacer kit. Stretching it will get you back in the game till your spacer kit comes in.

Lastly, oil the hell out of it after you replace the orings.


Mags LOVE the oil

[Spider-TW]

Besides changing all of the o-rings, or at least checking them, lube the banjo bolt with some grease (just a film) before installing it. Some of those were noted to have a nasty habit of damaging the o-rings as they were screwed in. Also make sure you keep the tension off of the banjo (from the bolt spring pushing back on the valve) as you screw it in.

[Alpha {MWB}]

A friend of mine and i did grease up the spring pack in the back, so that is done. I will take a photo tonight to show what o rings i have left from the AGD parts kit, Because i did replace just about all of them.

What kind of grease should i use for that rear banjo spring (something i can go get at walmart)? Can this grease be used on most paintball products as well?

[Spider-TW]

A friend of mine and i did grease up the spring pack in the back, so that is done. I will take a photo tonight to show what o rings i have left from the AGD parts kit, Because i did replace just about all of them.

What kind of grease should i use for that rear banjo spring (something i can go get at walmart)? Can this grease be used on most paintball products as well?

Superlube synthetic grease is common in a lot of hardware and sporting goods stores around here. It's generally too thick for fast moving o-rings, but very good at preserving the rest. Being synthetic, it works well with synthetic oils. Any common synthetic marker grease should work well enough to get it in there.

[factoid]

Hit your rail with a bit of rubbing alcohol. You might have some junk left in there from your old o-rings...particles keeping them from sealing right. Grease will help with that too, but a good alcohol swabbing with a q-tip might help. I would probably give the banjo a wipe-down too, without the o-rings on it. Maybe there's some schmutz in the grooves.

That and a bit of grease should do the trick. Careful with putting on too much, though, it can work its way into your marker and make things sticky.

When you installed the new o-rings throughout the gun did you replace the powertube o-ring? If so did you give it a little hit of oil before going in? That helps with barrel leaks a ton.

How easily does the banjo go in and out of the rail?

[Tunaman]

Just so you guys know, there was a rail update for the classic RT. If you have one of the older rails you may have a hard time getting it to stop leaking...I have them here.

[Spider-TW]

Just so you guys know, there was a rail update for the classic RT. If you have one of the older rails you may have a hard time getting it to stop leaking...I have them here.

That's what I was trying to remember.

Can you tell us what the update did?

[Alpha {MWB}]

Wasn't able to get some grease tonight, my plan fell through after work.

I will be working on the gun as i can, but if it is a bad rail, it would be good to know so as not to waist time, lol. Give us your wisdom Tuna man. If there is any way i can tell by looking at it, or taking pictures, let me know.

I was going to take some pictures tonight, but i found out the camera we own is horrible.

The Banjo Screw goes in and out easy enough when pushing in on the valve. I wish i could do some more testing tonight, but the wife is in bed.

[Alpha {MWB}]

UPDATE:

Went to a teammates house and after much tinkering we fixed the "down the barrel" leak. Had forgoten to put an o ring in between the spacer on the lvl 7... With that solved we then focused on the Banjo leak. It was profuse. We did some o-ring switching and got it down to EVER SO SLIGHT!!! to the point where you can't hear the leak from a distance at all. You get close and you can hear it.

This leak is INSANELY small. Me and my teammate were debating on weather it was the banjo still or possibly the on off. Any idea's gents?

[factoid]

Do a dribble test. Air it up and run a trickle of water over the back of the valve. Look for where the bubbles start forming.

If they're coming from around where the rail and valve meet it's probably a leak in your on/off...if they're coming from near the banjo you're leaking from that.

[Alpha {MWB}]

Would submerging the back part of the gun be ok if it is gassed up?

[MANN]

yes you can put the whole marker under water.

[factoid]

Would submerging the back part of the gun be ok if it is gassed up?

As long as you don't have any electrical components it's fine. I usually do just a stream of water...I find it easier to find the bubbles that way. Especially if you use soapy water.

[Newt]

One (possibly all?) of the mag manual editions says to clean the marker using running water, ie: the shower or outright dunking. However, it adds that the marker MUST be gassed up.