Degassing Vulcan
How do you do it if you don’t have the bleed screw on the air tube?
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Viewing 11 replies - 1 through 11 (of 11 total)
John Hagan makes a nice degassing tool, I bought one for mine.
The AGT degassing tool instructions include dry firing after emptying to verify that all air has been emptied. Personally, I wouldn’t want to put my valve under that kind of stress.
It is however, a lot easier to degas if you dry fire it down to about 70 torr. The pressure reduction lowers the amount of force the degassing tool needs to exert. You can actually push the valve open with just two thumbs pressure if the cylinder pressure is low enough.
I’ve never seen a .22 long or shorty mutant in EU so I don’t know where you people are looking but seems to me the US has more options of Mutant than across the pond… (Unless you are in the Ukraine I suppose)
the tube/spacer must be the right length, and I think minimum 7mm I.D. or so. and smaller than 11mm O.D.
you can make your own tool with threading too, but ball point pens are cheap, cut it to the right length, or use something similar
That worked very well…the ink pen tube length I used was 1.5″
Good to know. The valve hit a point where it would not close. I believe it was around 75 or so bar. No issues since I degassed this way.
you mean it dumped air under 75?
don’t dry fire it, you fuck up the valve
I had the change the oring behind the gauge on mine. I dry fired it down past 100 bar and the regulator held open somewhere around 75 bar.
If the $500 Marauder can come with a degassing tool…surely?!
Would it be wrong to dry fire until empty?
replace the hammer spring (access from the power adjuster side) with a short tube which fits over the cocking indiacator/hammer, preferably plastic so it does not damage the power adjusters softa aluminium. and screw back the power adjuster, forcing the valve open.
the tube/spacer must be the right length, and I think minimum 7mm I.D. or so. and smaller than 11mm O.D.
you can make your own tool with threading too, but ball point pens are cheap, cut it to the right length, or use something similar
Viewing 11 replies - 1 through 11 (of 11 total)
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You just drill a 3 mm hole right by the end of the air tube (whichever end ) and the remaining air will bleed out.
If not then take a deep breath and suck it out – either way works 😉
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