g&p m249 boxmag

deltaspear · November 26th, 2012, 22:39

hello sirs,

just want to ask if anybody has tried doing a mod for the g&p m249 boxmag from auto winding to pressure switch dependent feed.i ask this because i have the g&p m249 auto winding boxmag and i find it a little noisy when its auto loading.any expert advice as to how the auto winding could be disabled and make the boxmag wind only when the pressure switch is pushed or pressed.

thanks for helping in advance sirs

ThunderCactus · November 27th, 2012, 00:42

I too found it annoying and completely unnecessary
all you have to do is cut the circuit board out of the circuit
wire it battery to pressure switch to feed motor to battery
easy like pie

deltaspear · November 27th, 2012, 01:49

hello sir thundercactus.do you have a diagram or illustration as to how it could be executed perfectly?im a little hesitant to handle the electronics of the boxmag as gnp m249 boxmags here in the philippines are expensive and hard to come by

deltaspear · November 27th, 2012, 04:04

here are some reference photos of the gnp m249 boxmag wiring:

ThunderCactus · November 27th, 2012, 20:19

You're not handling the electronics, you're throwing them in the garbage, you don't need them lol
Wire the pressure switch directly to the motor and battery

deltaspear · November 27th, 2012, 22:53

good am sir.do you have a diagram that i can use to serve as a guide?not sure where how the connection should be done

theshaneler · November 27th, 2012, 23:02

here is my purposely shitty drawn diagram

ThunderCactus · November 27th, 2012, 23:18

LOL
I don't think I could have drawn it any clearer

deltaspear · November 27th, 2012, 23:22

tried this connection just now sirs.motor seems to be heating up very quickly.im using a nicad 9.6 batt.do i need to lessen the incoming voltage going to the motor?if so what do you recommend sirs?

ThunderCactus · November 28th, 2012, 00:44

I'm running an 11.1v LiPo on mine, that's a max of 12.6v
What saves the motor is those tiny little wires choking all the current trying to go through.
It will get hot for sure, but mine lasted over a year and a half and ended up stripping one of the plastic gears before doing any motor damage

Also may be worth noting, the boards on these box mags don't like anything above 9.6v
My 11.1v LiPo would cause the motor to trickle down in speed then stay on at very low speed. I don't know shit about electronics, I just know the problem is caused by an 11.1v LiPo lol
You're better off having the pressure switch only anyway, there's no use feeding ammo when you don't need it to.

deltaspear · November 28th, 2012, 02:29

got the details sir thunder cactus.thats my next plan.using a lipoly for the gun and motorized boxmag. any idea what voltage limiting device i can use so i can powerup the boxmag at just an average condition?

thank you so much for the suggestions and diagram sirs.

deltaspear · May 12th, 2013, 04:44

or better yet,does anybody know the voltage limit of the motor inside the boxmag?

ThunderCactus · May 12th, 2013, 13:44

it'll run safely off an 11.1v lipo, but the gears aren't the greatest
If you're not running 1500rpm, a 9.6v nimh should do it. that motor doesn't require any real amperage to run, so you won't see a performance difference between a 10.8v nimh and 11.1v lipo

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November 26th, 2012, 22:39	#1
deltaspear Trader rating Join Date: Oct 2012	g&p m249 boxmag hello sirs, just want to ask if anybody has tried doing a mod for the g&p m249 boxmag from auto winding to pressure switch dependent feed.i ask this because i have the g&p m249 auto winding boxmag and i find it a little noisy when its auto loading.any expert advice as to how the auto winding could be disabled and make the boxmag wind only when the pressure switch is pushed or pressed. thanks for helping in advance sirs

November 28th, 2012, 00:44	#10
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	I'm running an 11.1v LiPo on mine, that's a max of 12.6v What saves the motor is those tiny little wires choking all the current trying to go through. It will get hot for sure, but mine lasted over a year and a half and ended up stripping one of the plastic gears before doing any motor damage Also may be worth noting, the boards on these box mags don't like anything above 9.6v My 11.1v LiPo would cause the motor to trickle down in speed then stay on at very low speed. I don't know shit about electronics, I just know the problem is caused by an 11.1v LiPo lol You're better off having the pressure switch only anyway, there's no use feeding ammo when you don't need it to. Last edited by ThunderCactus; November 28th, 2012 at 00:46..

November 27th, 2012, 00:42	#2
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	I too found it annoying and completely unnecessary all you have to do is cut the circuit board out of the circuit wire it battery to pressure switch to feed motor to battery easy like pie

November 27th, 2012, 01:49	#3
deltaspear Trader rating Join Date: Oct 2012	hello sir thundercactus.do you have a diagram or illustration as to how it could be executed perfectly?im a little hesitant to handle the electronics of the boxmag as gnp m249 boxmags here in the philippines are expensive and hard to come by

November 27th, 2012, 04:04	#4
deltaspear Trader rating Join Date: Oct 2012	here are some reference photos of the gnp m249 boxmag wiring:

November 27th, 2012, 20:19	#5
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	You're not handling the electronics, you're throwing them in the garbage, you don't need them lol Wire the pressure switch directly to the motor and battery

November 27th, 2012, 22:53	#6
deltaspear Trader rating Join Date: Oct 2012	good am sir.do you have a diagram that i can use to serve as a guide?not sure where how the connection should be done

November 27th, 2012, 23:18	#8
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	LOL I don't think I could have drawn it any clearer

November 27th, 2012, 23:22	#9
deltaspear Trader rating Join Date: Oct 2012	tried this connection just now sirs.motor seems to be heating up very quickly.im using a nicad 9.6 batt.do i need to lessen the incoming voltage going to the motor?if so what do you recommend sirs?

November 28th, 2012, 02:29	#11
deltaspear Trader rating Join Date: Oct 2012	got the details sir thunder cactus.thats my next plan.using a lipoly for the gun and motorized boxmag. any idea what voltage limiting device i can use so i can powerup the boxmag at just an average condition? thank you so much for the suggestions and diagram sirs.

May 12th, 2013, 04:44	#12
deltaspear Trader rating Join Date: Oct 2012	or better yet,does anybody know the voltage limit of the motor inside the boxmag?

May 12th, 2013, 13:44	#13
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	it'll run safely off an 11.1v lipo, but the gears aren't the greatest If you're not running 1500rpm, a 9.6v nimh should do it. that motor doesn't require any real amperage to run, so you won't see a performance difference between a 10.8v nimh and 11.1v lipo

g&p m249 boxmag

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