Automag chuffing between shots

Ri0t · 01-03-2012, 11:12 AM

So I bought an automag classic on the cheap not too long ago. It worked well, but I could not leave well enough alone and decided to start modding. I replaced all the o-rings and seals, threw a pneumag frame on it. Tested a few times and I could get it going pretty well without chuffing until higher ROF.

https://www.youtube.com/watch?v=CH8J...e_gdata_player

After that something that something happened that caused all sorts of cycling issues where it would not cycle at all. Added a level 10 hoping that would help and after some tuning and adjusting my blowoff valve to not leak until I can get a new one, I can now get it to cycle and fire.

The only thing now is that if I try to fire more than 1bps it chuffs every other shot and I have no idea why.

One thing that I think may be a factor is that over the course of taking it apart I mandgled the valve pin spring so that it would not fit back in, so I found a spring that would fit and threw it in. Could this be the culprit? I have not tried changing it yet because I have not found somewhere I can order just the spring for a reasonable price.

I keep refilling my tanks so no they are not low.

Please let me know what advice you have. I'm getting desperate, to think point i'm considering getting a new valve all together.

Spider! · 01-03-2012, 11:44 AM

You can get a new valve spring from airgundesignsusa.com or maybe Tunaman. When you take the valve pin spring in or out, turn it clockwise as you push or pull. This keeps the bottom of the spring from binding. It's like screwing it in, but you turn it the same way to take it out. If you can bend it back to shape, they are pretty tolerant to a little abuse (once or twice).

Make sure you have a little gap between your MPA3 ram and the sear arm when aired up, just like the back of the trigger and the trigger rod on a regular mag. If the ram crowds the sear, it may not be able to come all the way down and let the on/off pin clear properly (causing the chuffing).

Ri0t · 01-03-2012, 11:52 AM

I will have to check, i'm pretty sure there is enough space though. It's weird because it fires just fine every other shot, but chuffs reliably inbetween.

CJOttawa · 01-03-2012, 12:17 PM

Remove the Level-10 SuperBolt II and put the Level-7 bolt back on.

need4reebs · 01-24-2012, 10:14 PM

so wat happened? is it fixed???

01-03-2012, 11:12 AM	#1 (permalink)
Ri0t pew pew pew Join Date: Sep 2010 Location: Big Terrible Texas	Automag chuffing between shots So I bought an automag classic on the cheap not too long ago. It worked well, but I could not leave well enough alone and decided to start modding. I replaced all the o-rings and seals, threw a pneumag frame on it. Tested a few times and I could get it going pretty well without chuffing until higher ROF. https://www.youtube.com/watch?v=CH8J...e_gdata_player After that something that something happened that caused all sorts of cycling issues where it would not cycle at all. Added a level 10 hoping that would help and after some tuning and adjusting my blowoff valve to not leak until I can get a new one, I can now get it to cycle and fire. The only thing now is that if I try to fire more than 1bps it chuffs every other shot and I have no idea why. One thing that I think may be a factor is that over the course of taking it apart I mandgled the valve pin spring so that it would not fit back in, so I found a spring that would fit and threw it in. Could this be the culprit? I have not tried changing it yet because I have not found somewhere I can order just the spring for a reasonable price. I keep refilling my tanks so no they are not low. Please let me know what advice you have. I'm getting desperate, to think point i'm considering getting a new valve all together. __________________ Play with honor

01-03-2012, 11:44 AM	#2 (permalink)
Spider! MCB Member Join Date: Dec 2008 Location: Houston, TX	You can get a new valve spring from airgundesignsusa.com or maybe Tunaman. When you take the valve pin spring in or out, turn it clockwise as you push or pull. This keeps the bottom of the spring from binding. It's like screwing it in, but you turn it the same way to take it out. If you can bend it back to shape, they are pretty tolerant to a little abuse (once or twice). Make sure you have a little gap between your MPA3 ram and the sear arm when aired up, just like the back of the trigger and the trigger rod on a regular mag. If the ram crowds the sear, it may not be able to come all the way down and let the on/off pin clear properly (causing the chuffing). __________________ My Feedback

01-03-2012, 11:52 AM	#3 (permalink)
Ri0t pew pew pew Join Date: Sep 2010 Location: Big Terrible Texas	I will have to check, i'm pretty sure there is enough space though. It's weird because it fires just fine every other shot, but chuffs reliably inbetween. __________________ Play with honor

01-24-2012, 10:14 PM	#5 (permalink)
need4reebs Possible Gun Whore Join Date: Aug 2010 Location: Phx, AZ	so wat happened? is it fixed??? __________________ http://www.mcarterbrown.com/forums/f...-feedback.html http://fightertownpaintballpark.com/

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01-03-2012, 12:17 PM	#4 (permalink)
CJOttawa Immune to sales tactics. Join Date: Dec 2006 Location: Canada's National Capital	Remove the Level-10 SuperBolt II and put the Level-7 bolt back on.