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May 30th, 2006, 21:25
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#1 |
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KSC Glock34: Slide is flying off.
Hey guys,
I just went to my first skirmish yesterday with a brand new g34. It worked perfectly, except that when I was on a balcony and I was shooting down, the slide flew off! Kinda shocked, I went home and did a few more test shots. Everytime I shoot the glock straight down, the slide flies off. Now I know that the ksc glocks weren't designed to handle such an angle, but is the slide flying off proper behavior for a brand new gun? |
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May 30th, 2006, 22:19
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#2 |
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Guest
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who were u shooting at down your balcony? lol O.o
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May 30th, 2006, 23:09
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#3 |
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I think he said that he was shooting off a balcony at a game...
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May 31st, 2006, 01:19
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#4 |
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Yeah, off a balcony at the game, not off of my balcony.
mirage13 do you have this problem with your glock? |
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May 31st, 2006, 01:24
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#5 |
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Delierious Designer of Dastardly Detonations
    Join Date: Dec 2001
Location: in the dark recesses of some metal chip filled machine shop
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I can only guess that when pointed downwards, gravity pulls the outer barrel forwards which might be causing it to bind with the slide when it recoils. To figure out if this is the cause, pull the slide back and apply a bit of scotch tape to the barrel with about an inch sticking out the front of the slide. Pull on the tape lightly (about as hard as gravity would pull on the barrel) and fire your gbb.
__________________
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May 31st, 2006, 12:37
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#6 |
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Thanks for the suggestion MadMax,
Anyway I tried it. I used some scotch tape to pull on the outer barrel while firing the gun forward, and I couldn't reproduce the problem. I noticed that when I fire the gun straight down, there is a LOT of gas ejected out the back, which may or may not have something to do with this... The strange thing is, when I'm manually cocking the gun, there's no way for me to pull the slide off. I've tried pulling up, to the side, etc... but it's held firmly in place. |
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May 31st, 2006, 14:52
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#7 |
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Delierious Designer of Dastardly Detonations
Join Date: Dec 2001
Location: in the dark recesses of some metal chip filled machine shop
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Ah, I think I know what's happening then. If you point the gun downwards, or even worse: flip it upside down, you orient the mag such that liquid propellant can come out of the mag (which is blasting out white fog).
The normal operation of the glock locks the mag valve open until the slide recoils about 1/3 of the way rearwards. At this point, a surface in the underside of the slide (left side) pushes down on a part which locks the firing pin forward and releases it, allowing the mag valve to close. The slide recoils the further 2/3 of the way on the pressurized space in the recoil piston so by the time the slide has fully recoiled rearwards, the pressure in there is 1/3 of the initial pressure just as the valve closed because the chamber has tripled in volume. When you admit a heap of liquid into the recoil mechanism, the liquid expands into a significant volume of gas which can provide a CONSTANT pressure in the expanding recoil chamber. This means that the pressure throughout the entire rearwards recoil cycle can be significantly higher than the design is meant to take.
__________________
Want nearly free GBB gas? |
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May 31st, 2006, 17:28
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#8 |
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Ah okay,
That makes a lot of sense. It doesn't sound like there is anything I can do about it, so I'll just refrain from shooting at odd angles ... unless I have a clear shot, then I'll just knock them out with my slide  Thanks for explaining it to me MadMax. -Cuppo |
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