Author Topic: Umarex Gauntlet: Regulator Testing and Adjusting Video  (Read 764 times)

Hajimoto

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Umarex Gauntlet: Regulator Testing and Adjusting Video
« on: December 16, 2017, 07:36:40 PM »
Hey Guys & Gals!   
 Yet another addition to my Umarex Gauntlet series.  In my quest to get the Gauntlet to realize all of its potential, and after I tore the rifle completely apart and smoothed over some bumps in the road, my Gauntlet was still sleeping. I determined that I needed to tear into system #2 out of three and validate if the regulator was, in fact, doing what it was supposed to be doing.

Concerning the Gauntlet, there is a lot of mixed up information as to what the regulator pressure is supposed to be.  The tank says its 1250PSI printed Umarex press materials say 1150PSI and there was at least one other place that stated it was 1100PSI. I would assume that the regulators for the .177 would be different than the .22 but what I would not expect is the .22 to be lower than the writing on the regulator itself.

I invite you to join me on this journey as I take a ride through the Gauntlet Regulator maze and come out a winner.



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Alan

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Re: Umarex Gauntlet: Regulator Testing and Adjusting Video
« Reply #1 on: December 17, 2017, 04:38:54 AM »
I did modify (moto-fy?) one of my regulators, much in the same way you did. I don't know how many times you went through the process, but as I recall, I had it apart 6 times. It might have taken many more, but I think I got lucky. In any case, I'd like to know how many times you R&R the regulator before you got it where you wanted it?

And I must say, I sure do like the adjustable regulator on my Cobra.
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Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

Hajimoto

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Re: Umarex Gauntlet: Regulator Testing and Adjusting Video
« Reply #2 on: December 18, 2017, 08:03:27 AM »
Thank you for picking up on my Hajism  ;D

Let's take a look;
  • I took the regulator out and apart the first time to investigate and install the homemade aluminum foil shims, result from 1050 to 1200ish.
    Regulator was removed and a 0.020 shim was installed result from 1200 to 1350ish.
  • Based on the results of 0.010 shim equated to +125 PSI I added another and ended up with somewhere around 1350ish.

Looks like I was lucky and only had two visits inside the reg.
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Alan

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Re: Umarex Gauntlet: Regulator Testing and Adjusting Video
« Reply #3 on: December 18, 2017, 08:52:10 AM »
I think (based on my own experience) that most Haji-wanttobe types don't attempt to take apart a regulator, because they're afraid they'll mess is up—like in getting the stack put back together wrong.

My own trip was ordering a 2,250 PSI regulator, and finding out it was 200 PSI high! To be honest, 2,250 was too high, but again, I lucked out. I reversed two sets of washers so they nested together, which moved the pressure to 1,950 PSI. That amount, and a careful adjustment of the TSS, got me to exactly where I wanted to be—≈900 FPS with a 25.4 grain pellet (.25 cal.). Now that I have had one apart a few times, I won't hesitate to do it again if necessary.

Thanks for the Haji-put.
  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.