So I bought a Gauntlet on one of the fall sales. I was reading up on it, mostly Hajimoto videos and did a little adjustment, new short shroud/mod adapter and cleaned up the hammer and tube. Then, I attempted to pressurize it for the first time and it popped one of the rupture disks, one on the gun side of the neck, somewhere around 1500 psi. Annoying on a refurb gun on the first pressurization. I guess I’ll be trying to figure out what to do from here. Replacement bottles cost as much or more than the rifle.
Tuning Gauntlet Gen 1, popped rupture disk
- Thread starter MMCM13
- Start date
I figure that the reason pressure was that high, on that side is because the regulator didn’t control pressure.
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Maybe, but the 1.8k are notorious for bursting in the 1500-1600 psi range. It's worth a try to replace it and see if you just got one that was on the weak side.
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if it blows the disk again, you're going to need to test the output pressure, and I have a spare bottle with regulator, it's for a .25 cal, I swapped it out with a 500cc Carbon bottle, PM me if you need a new Bottle,
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Thanks for the offer, the 25 and the 22 I have different regulator settings, quite a ways apart.
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I had both .22 and .25 but the .22 I took apart and lost the output valve stem, It dropped and disappeared into the Void of no return.... DOH
my modified Gauntlets:
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Well, the replacement rupture disk also popped on the way up. I also discovered the barrel grub screws loose, and one had been tightened on until it cracked. The wrench just slips in it now. I haven’t managed to pressurize much less shoot this thing and keep finding things wrong. I found a larger bottle with a reg, on sale at expert hpa, so I ordered that, now to track down grub screws and see what else is wrong with the thing…
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