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Vinceb
Private
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 Posted - 02/04/2006 : 10:40:41 AM
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I was playing around last night, and decided to try to do something about all the gas that leaks out whenever I fill my GBB mags (KWA M9 and M945, KWC 1911).
Didn't have any o rings that fit, so I stripped some insulation from 16ga automotive wire, and cut a slice maybe, about .020" thick. I pressed it down over the fill valve stem, and seated it with the fill nozzle from my propane adapter.
I did this to all 3 mags - it cut my fill leakage to almost nothing. I can't imagine I'm the first one to try this, but just thought I'd pass it along anyway. |
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SnakeEyes0001
Colonel
USA
Member Since: 06/12/2003 |
Posted - 02/04/2006 : 1:30:11 PM
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| I've heard of people doing the same thing but using rubber bands cut to fit. |
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Sulfuric_t2
Private
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USA
Member Since: 04/27/2005 |
Posted - 02/04/2006 : 3:11:32 PM
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| its better to let it leak. When it leaks during the fill, it lets the liquid to gas ratio come to a equilibrium. If you don't let it leak, like on KJ mags, the gas that is in the clip (not the liquid in there) gets compressed. Then the first shot shoots hard compared to the bulk of the shots. I guess it ins't really a big deal, but it is nice to know when you clip is full by it overflowing as well. If you have a seal in there, like the KJ mags, you have no idea if the mag is full. If you overfill those, they break. If you overfill the ones that leak, they don't break. |
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Vinceb
Private
Member Since: 11/19/2004 |
Posted - 02/05/2006 : 08:48:40 AM
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First of all, I'm referring to "full time" leakage, when the fill port/nozzle interface is leaking as soon as the joint is pressurized. This does nothing but waste gas and sometimes spills the stuff (while still in a liquid phase) on your fingers - can you say COLD???
As for filling the mag, I can get a better fill this way than I could before. Why? I can keep filling it for 10-15 seconds without wasting more gas than I'm loading. I was tending to "short fill" before - so much gas was leaking that I stopped filling as quickly as I could.
BTW - performance is not affected. There is none of this "hard first shot" stuff |
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Sulfuric_t2
Private
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USA
Member Since: 04/27/2005 |
Posted - 02/05/2006 : 1:13:14 PM
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| They were designed to leak so that you cannot overfill them. Its not there to just waste gas, do you really think every gbb maker besides KJ out there is just dumb? |
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Topic |
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Gas mag O-rings
