Chuff probs on X-valve/ULE body/TAC rail

[athomas]

The bolt spring replacement is only a suggestion based on possible being worn out depending on use. It doesn't mean that it needs a stiffer one, just a fresh one. I had mine wear out and it performed very similar to yours. The bolt springs do wear out and have been known to be a comsumable item on mags since the begining.

Another thing to check is the trigger rod. Is it touching the back of the trigger while the trigger is at rest? There should be a tiny gap. This will ensure that the on-off pin can fully open to allow the front chamber to quickly recharge when you release the trigger.

[rav3nware]

The bolt spring replacement is only a suggestion based on possible being worn out depending on use. It doesn't mean that it needs a stiffer one, just a fresh one. I had mine wear out and it performed very similar to yours. The bolt springs do wear out and have been known to be a comsumable item on mags since the begining.

Another thing to check is the trigger rod. Is it touching the back of the trigger while the trigger is at rest? There should be a tiny gap. This will ensure that the on-off pin can fully open to allow the front chamber to quickly recharge when you release the trigger.

No, trigger rod isn't resting on the trigger. I adjusted it early on into this problem (there was a lot of slack) but there's still a good bit of space between them.

[Outlaw5]

Your chuff problem

Rav3nware, I tech the mags in my neck of the woods in NC, no I'm not a tech certified, but I have talked to most when I'm stumped. I believe the on/off pin is the answer. First, get calipers and measure the length of the pin. Once you have that recorded you can look at Black VCGs threat on mag tolerances or you can call the tech line at AGD and ask if the pin you measured is the right one. If not then order the correct one and you should be fine. I had a problem with an e-mag, The X-valve was added from an RT, different arrangements on the internals in regards to the trigger and on/off pin length. Ordered a new pin and absolutely no problems with it now. The e-mag with the wrong on/off pin did the same thing you are describing in your thread. I think you should call AGD, you'll find they will work through the issue with you until it is complete. Good luck and be sure to post your final success. Some other poor guy or gal could have the same problem and you will have given them the answer long before their need for trial and error. V/R Jerry Perkins, SF

[rav3nware]

Rav3nware, I tech the mags in my neck of the woods in NC, no I'm not a tech certified, but I have talked to most when I'm stumped. I believe the on/off pin is the answer. First, get calipers and measure the length of the pin. Once you have that recorded you can look at Black VCGs threat on mag tolerances or you can call the tech line at AGD and ask if the pin you measured is the right one. If not then order the correct one and you should be fine. I had a problem with an e-mag, The X-valve was added from an RT, different arrangements on the internals in regards to the trigger and on/off pin length. Ordered a new pin and absolutely no problems with it now. The e-mag with the wrong on/off pin did the same thing you are describing in your thread. I think you should call AGD, you'll find they will work through the issue with you until it is complete. Good luck and be sure to post your final success. Some other poor guy or gal could have the same problem and you will have given them the answer long before their need for trial and error. V/R Jerry Perkins, SF

Thanks for the informative reply - the tolerances thread has become very familiar to me over the course of this issue I do not own a pair of calipers, and I'm not sure where I would find a pair, and I only saw two kinds of on/off pin on the storefront... however, I ordered a ULT kit a day or two ago instead. Hopefully replacing the entire on/off assembly with something MADE for X-Valves will fix the problem. If nothing else, I know that everything that comes in that kit is going to be the right tolerances, and if the problem persists I'll know to look somewhere else.

The kit should be here tuesday - I'll post what happens when I install it.

[rav3nware]

Well, ULT kit is installed, and still no joy. Instead of chuffing constantly unless the marker is fired very slowly, now the marker fires once and will not fire again afterwards. I can feel air pressure on the trigger when I pull it, but the marker refuses to fire. I've tried adjusting the number of shims all the way from 1 shim to 5 with no change other than shooting only once on some, and not shooting at all on others. When degassing, I can hear the valve/bolt reset somewhere around 400psi and I can actually "fire" the gun a couple times (weakly of course) with the little bit of gas left before it's done. Tried changing to a heavier mainspring just for grins, same thing happens.

I'm about out of ideas here, LoL. I'll keep bangin' away, but I'm just about at the end of my rope on this one and considering sending the marker in to AGD to be fixed. If anyone has some more ideas to try, I'm ALL ears

[rav3nware]

Update on this problem - I called AGD tech support and, long story short, the marker works now. The ULT ended up fixing the problem... it just needed a downright silly amount of shims to be properly aligned, lol. My mag now works as it should and in addition, is even faster than it was before thanks to the trigger pull kit.

To anyone who runs into this problem in the future - save yourself the grief and change your on-off pin. Or just shell out forty bucks and pick up a ULT on/off kit instead, that's the easiest way to do it.

Thanks to everyone on the forums who helped me get this figured out :)

[Stoble]

how many shims did you end up needing?

[rav3nware]

Five or six... I remember I had ONE left in the bag from the ULT kit.