ULT help

[turboboy808]

Setup: x-valve, LX, , ULT, Devilmag frame

i think my ULT on/off pin is bent. The gun won't cycle. The sear won't lock the bolt.
Where can i get just the ULT pin itself? I looked on the website but couldn't find it.
Also, is it ok to just bend it back as straight as i can get it or will that ruin its integrity?
Is there a better option for an on/off to be used with a devilmag frame, possible one with a more durable on/off pin? Thanks.

[athomas]

The on-off assembly will hold the ULT pin straight as long as it is not kinked in the middle. If the pin is bent where it is attached to the larger section, carefully straighten it.

If the sear won't lock the bolt, you probably have bolt stick due to a level 10 carrier that is too tight. Remove the powertube carrier orings and change carriers so that you are using the largest carrier that does not leak. Always use the same white carrier oring in each carrier that you try.

[turboboy808]

Thanks, i appreciate your help. i feel like an idiot. There's nothing wrong with my ULT. My battery was dead, therefore it had no energy to release the sear all the way. Now, with a FRESH battery it's "chuffing" and the bolt stays open after a few quick trigger pulls. Do you think it could be that i need to remove shims from the ULT or move the solenoid further away from the sear arm? the sear isn't catching the bolt on the return. I'll play with it later today.

[Ando]

Install the valve into a mech mag and tune the lvl 10. Reinstall the valve in the D-Mag and see if your still having issues.

It's not a lvl 10 shim issue.

When you throw a E-Grip in the mix, you bring a whole new set of possible issues to the table.

Tuning the lvl 10 in a mech mag will alleviate the valve itself and point to the lowers if your still having problems.

[maniacmechanic]

Install the valve into a mech mag and tune the lvl 10. Reinstall the valve in the D-Mag and see if your still having issues.

It's not a lvl 10 shim issue.

When you throw a E-Grip in the mix, you bring a whole new set of possible issues to the table.

Tuning the lvl 10 in a mech mag will alleviate the valve itself and point to the lowers if your still having problems.

You my friend are taking ALL the fun out of it !!

[Ando]

You my friend are taking ALL the fun out of it !!

It's elementary, my dear Maniac

[turboboy808]

i'm about to throw this mag out the window

Okay, so i put a mechanical frame on and am still having issues with it not firing at all. The on/off seems to be working since the trigger is returning. I have changed the LX carrier to what i feel is the right size. What are some reasons the bolt won't release? Missing parts, valve internal orings need changing? I'm lost. Any good mag techs in Northern California, Sacramento area?

[turboboy808]

I was just thinking. Could it be my tank regulator. Running a myth reg. Is the output pressure to low? If so, can I increase it somehow? What symptoms would I have if the tank output pressure is to low? Thanks

[factoid]

Have you tried putting a shorter spring on your Level 10?

You might have too much backward pressure holding the bolt back if the the tank output is ridiculously low. Put the shortest spring on there and see if it cycles. Cockerpunk had a good test of the Guerilla air tanks on here. They kind of suck. A few of us are using them without troubles, but we all know they're cheap tanks and not of the highest quality.

Also you should try putting your RT On/Off back in the valve while you're tuning the level 10 bolt. No need to have to worry about two different sets of shims and carriers while you're adjusting. Dial in the Level 10. Then dial in the ULT. Then put your eframe back on.

[turboboy808]

Thanks for the tip. I did put in the shortest spring and it did cycle but i think it was too weak since the bolt didn't reset. It just leaked down the barrel until i manually pushed the bolt back. At least i know it's not my on/off or wrong carrier size. I just purchased a high pressure kit for my myth reg. Hopefully that would solve my problems.

[OPBN]

I thought Myth regs were typically preset for around 600psi unless it specifically is a HP set reg? I bought one once and it would only get me a shot every three or four tries. Had to exchange it for a different one that put out 800+. Also, have you adjusted your field strip screw? If it's too tight, it won't set the trigger pin. I have one mag that essentially have to air up, then adjust the field strip screw until I hear it click.

[turboboy808]

Yes you're right. After researching the myth regs, the 4500 ones come preset around 650 psi. However, they offer a HP one OR you can purchase just the HP piston/spring assembly kit which is what i did. It'll bump up the psi to ~850. It's on the way an i'll update you all. Thanks for the tip on the thumb screw, i'll make sure to keep that in mind.

[athomas]

Thanks for the tip. I did put in the shortest spring and it did cycle but i think it was too weak since the bolt didn't reset. It just leaked down the barrel until i manually pushed the bolt back. At least i know it's not my on/off or wrong carrier size. I just purchased a high pressure kit for my myth reg. Hopefully that would solve my problems.

The high pressure bottle will help if the pressure is low.

A weak bolt spring will stick but will eventually reset. It just causes a slow cycle speed. If it doesn't reset at all, then the problem is a carrier that is too tight. If the next larger carrier size leaks, then try a new powertuve oring and retune the carrier size for the new oring.

[turboboy808]

Well, finally tried out a high pressure tank. Now my Dmag Rocks!! Problem solved. Thanks to all for your input. The velocity was jumping quite a bit though. 285, 256, 272. Any reasons why this could be? The tank reg is a pretty new GA myth. Could a new reg be the reason? Thanks

[Ando]

See if replacing oring #31 helps you out. Could be the way your pulling the trigger too.