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Old 04-10-2013, 07:44 AM   #11 (permalink)
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Return? As in to the triggers starting position?

Hemmmm. I need to crack this thing and look at it up close.
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Old 04-11-2013, 01:25 AM   #12 (permalink)
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Originally Posted by Stilgar View Post
OK, found a TPX!

So...Can anyone tell me if that Pierce pin assembly is needed to operate the gun? Is there anything in it that will effect the trigger?
The trigger's return spring is in the pierce pin assembly. The white delrin "nub" that protrudes from the rear of the assembly is what pushes the trigger back to reset after firing. You can modify this or come up with a creative solution of some sort, of course, but if you remove it you WILL need to do SOMETHING to reset the trigger.
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Old 04-11-2013, 07:38 AM   #13 (permalink)
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Quote:
Originally Posted by PistolRogue View Post
The trigger's return spring is in the pierce pin assembly. The white delrin "nub" that protrudes from the rear of the assembly is what pushes the trigger back to reset after firing. You can modify this or come up with a creative solution of some sort, of course, but if you remove it you WILL need to do SOMETHING to reset the trigger.
Rgr. Thanks! I had guessed that but I wasn't sure.

I will do some thinking about my design.
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Old 05-20-2013, 05:08 PM   #14 (permalink)
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So, my TPX is piercing the 12g right away when I put it into the gun...

so, insert 12g, push in plug and as it locks into place the 12g is punctured...

then there is a very slight leak...which stops after a few shots?

Any ideas why?

I disassembled, couldn't see anything wrong with the pierce assembly. Should I loosen off the 12g plunger just a tad?
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Old 05-20-2013, 07:40 PM   #15 (permalink)
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Originally Posted by Stilgar View Post
So, my TPX is piercing the 12g right away when I put it into the gun...

so, insert 12g, push in plug and as it locks into place the 12g is punctured...

then there is a very slight leak...which stops after a few shots?

Any ideas why?

I disassembled, couldn't see anything wrong with the pierce assembly. Should I loosen off the 12g plunger just a tad?
Yes.
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Old 05-20-2013, 07:52 PM   #16 (permalink)
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Thanks. Will try and report.

Could the leak be due to high velocity?
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Old 05-20-2013, 08:03 PM   #17 (permalink)
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Probably due to a bad seal between the pierce pin and the 12g. It shouldn't pierce when you put it in, it should pierce when you pull the trigger.

EDIT: Might want to check if this o-ring is actually there:

http://www.tippmannparts.com/TA20034...P-p/gp6463.htm
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Old 05-20-2013, 08:16 PM   #18 (permalink)
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The seal is there and it is clean and in good repare.

The pin sits behind the seal.

I think tht the plunger I pushing the 12g too deep
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Old 05-21-2013, 09:33 AM   #19 (permalink)
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Do you have the old style that didn't have the set screw on the 12g cap? If not you should be able to back out your set screw to the appropriate setting.

Unless I misunderstood the situation.
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Old 05-21-2013, 10:04 AM   #20 (permalink)
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No, I have all the upgraded parts.

I 'Think' I have sorted out the issue.

What I think happened was the CO2 plunger was just a tad too deep, which forced the 12g down onto the pierce pin just enough to break the seal, but not enough to properly open up the 12g. Thus the very slight leaking sound...

I just need to back out the plunger a tiny bit so that the 12g is only pierced on the first trigger pull...just like it is supposed to do!
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