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July 28th, 2010, 09:22
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#1 |
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aka coachster
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G&P m120 mechbox issues
My mechbox has decided to go into full auto (selector in semi) without my finger on the trigger. It will lock into full auto until I slap/smack the side of the receiver fairly hard. Before I open it up, what might be broken? Cut off switch? Faulty trigger assembly? Fairly new box, gamed maybe 3 times.
Only other issue I occasionally had is that when changing the selector from safe to semi, there would be no response from a trigger pull. rotating to auto then back seemed to fix it. G&P m120 (rear) EG1000 CA m15 metal receiver (note: the rear body pin doesn't seat completely but is in pretty tight) |
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July 28th, 2010, 09:46
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#2 |
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Tys
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Assuming you don't have a short in the wiring......
If you're shooting semi fine and then it spontaneously goes runs-away in full auto...then your cut-off lever isn't actuating/catching the sliding portion of the switch block. A hard wack is probably dislodging it so it can re-engage. See that it is moving freely in the mechbox...with the mechbox done up you should be able to freely/easily move it with light finger tip pressure. Screw might be too tight, sector gear might be biding on it, etc... If while it's shooting full auto...you release the trigger and it keeps firing full auto (ie. runaway gun) then the switch block is getting stuck forward, closing the circuit. Dirt/gunk/etc... The safe/semi----full/semi thing is typically a selector plate/safety bar issue. First make sure your wiring isn't binding up the safety bar in the mechbox...then see if you don't need to file a bit off the edge where the safety bar contacts the selector plate. Basically what you're looking to do is to make the safety drop out of position sooner. If you really get stuck, come by this weekend...I'm working on stuff around the house. |
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July 28th, 2010, 11:13
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#3 |
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aka coachster
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Thanks Tys. I also need to sort out issues with the PDW...
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July 28th, 2010, 12:20
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#4 |
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Tys
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Ok, call first
**edit** bring doughnuts....I'm under heavy watch so sneak them in... |
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July 28th, 2010, 12:34
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#5 |
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* Age Verifier status suspended *
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Ive had an G3 Varient in for repairs do that before. All youd have to do is put the selector off safe and it would go full auto on its own. Turned out to be a small cut in the red wiring leading to the switch assembly.
While normally youd think 1 cut isnt bad, since youd need 2 to trigger a short, remember the gearbox is made of metal and is a conductor in itself. This can bypass the trigger contacts.
__________________
 Certified Sniper Clinic Instructor and Counter Sniper Sentinel Arms Customs - Specializing In Unique, One of a kind guns |
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July 28th, 2010, 18:29
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#6 |
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Not Eye Safe, Pretty Boy Maximus on the field take his picture!
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1 cut in the red wire will do it every time lol
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July 28th, 2010, 18:46
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#7 | |
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PinkEagle
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Quote:
Mine does some wierd stuff... |
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July 29th, 2010, 13:13
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#8 | |
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aka coachster
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Quote:
selector rotates from semi to auto without racking it. significantly more resistance going from semi to safe. npas is set to wide open but doesn't always completely cycle. when it does cycle, it goes blop, blop, blop, instead of clack, clack, clack. think it's still getting stuck in the cylinder. did a real rough sanding to reduce the over all diameter in a couple spots with no change. will have to do more. |
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