new mag owner

[mogli]

Hi guys just picked up an automag and minimag. The minimag shot fine after sitting for years but automag is having some problems. Changed out the on/off orings and the regulator piston oring ang also reg seat and oring. Now when I air the gun up there is no leaks but the gun cycles either a few times then stops or not at all. Getting ample pressure to my max flo setup.

Is my reg sticking, sometimes going from full on to full off helps on the velocity screw.

Thanks

[sQuidvision]

Have you inspected the spring pack in the back? also have you made sure your air lines are all clear?

[mogli]

The spring pack looked ok, but i do not know what signs of a bad spring pack are either. I am fairly mechanically savvy and did not see anything out of the ordinary right away.

[mogli]

It looked in one piece and was greased in antiseize.

[mogli]

Also on the note of air lines, The previous owner said they fired when they were put away about ten years ago, my guess is they are clear the lines did not seem to have any ptfe tape in them.

[sQuidvision]

Does it not cycle even if the velocity is turned up to the max? You might have a slight alignment issue with the valve... how tight are you making the field strip screw?

[mogli]

sometimes does not cycle even at max, sometimes slightly more than finger tight with a allen key

[athomas]

Does the trigger have pressure on it when it won't fire or is it limp?

A piece of sand in the back section, where the regulator assembly is, can cause velocity issues.

What kind of Max flow setup do you have? Is it a high output tank mounted regulator or an inline regulator that is separate from the bottle. Mags require a high pressure setup. In-line regulators don't t work well at all. Only the high output tank mounted regulators work well on mags.

[mogli]

the trigger has pressure but not really sure if its at full pressure. the regulator set up is a dual reg on the asa the tank is left hand threaded and has no reg and then a bottom adjustable reg to set the output to the gun. there is a on/off to the tank.

[athomas]

That's one of the old Max-flo systems. It should work fine. Make sure the pressure is turned up to a high enough value to supply the valve properly.

If the trigger has pressure it means the bolt is not sticking. That's good.

It does sound like there is a pressure issue. Have you changed the regulator seat oring? You should actually replace all orings in the valve. That way you will know what you are starting with. It will also give you a chance to clean out the valve and remove any gunk that may have separated from the oil.

[mogli]

I think a deep clean is in order I changed the two teflon on/off orings, the top urethane on/off oring, reg seat, reg oring, and reg piston oring.

[BiNumber3]

well, u have a working minimag right? start switchin parts to figure out what exactly is wrong tedious but works.

I'd start with just movin the whole minimag valve over n seeing if it fires with the automag's setup

if it does then the issue is the automag valve, at which point you could switch the bolt or the back half of the valve n see if it makes a difference

also seeing as you switched some o-rings for the on/off, did the valve work before u changed o-rings? and is the on/off pin oriented correctly (notched end should be on bottom)?

gl

[mogli]

on/off just dumped air before, gun has cycled just doesnt do it consistently. really havent had time to tinker but that is ending tonight.

jon

[mogli]

what is a good length for the adjustable trigger rod. I have a benchmark frame on the gun.
changed where the trigger stop was and completely fixed the problem, can chuff a lil so want to tune it out with the rod.

on/off just dumped air before, gun has cycled just doesnt do it consistently. really havent had time to tinker but that is ending tonight.

jon

[sQuidvision]

The stock length is exactly 2" from tip to the back of where it connects to the sear when the arm is parallel with the barrel as it would be installed.