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Ashton · May 23rd, 2009, 18:20

'Lo. I recently ordered a used AEG off the classifieds, and I haven't gotten a chance to actually give a few rounds through it until now. Everything was working great at first, though I noticed in semi-automatic it was double feeding a bit. Interested in the rate of fire, I flick it over to automatic and start letting out a few bursts. The first two bursts or so seemed fine, then I got a very, very ugly grinding noise. Panic! I stopped firing and immediately came on here.

Here's the breakdown:

CA Mechbox, 9.6v 2400 mAh battery, Systema Magnum Long Motor.

Problem began during automatic firing, after about 30 rounds.

Grinding noise during either semi-automatic or automatic firing. Grinding noise continues during semi-firing even after the piston should have cycled once. (Approx 1-2 sec. of grinding after trigger release.)

Using .25 Metal Tech during firing, examined for jamming but there was none.

Piston currently appears to be fully forward.

Not firing.

From doing a quick search of the forums it's suggested that this is either a problem with jamming, which I already did a quick search on, or motor height. If this is the case, do I simply adjust that by tightening the flat-head screw on the bottom of my grip?

I'm willing to take the AEG apart and take a gander inside, but I'm not so confident as to not ask for some help first.

Thanks in advance to anyone with advice.

May 23rd, 2009, 18:20	#1
Ashton Trader rating Join Date: Apr 2009 Location: Toronto, ON	Grinding Noise on CA Mechbox 'Lo. I recently ordered a used AEG off the classifieds, and I haven't gotten a chance to actually give a few rounds through it until now. Everything was working great at first, though I noticed in semi-automatic it was double feeding a bit. Interested in the rate of fire, I flick it over to automatic and start letting out a few bursts. The first two bursts or so seemed fine, then I got a very, very ugly grinding noise. Panic! I stopped firing and immediately came on here. Here's the breakdown: CA Mechbox, 9.6v 2400 mAh battery, Systema Magnum Long Motor. Problem began during automatic firing, after about 30 rounds. Grinding noise during either semi-automatic or automatic firing. Grinding noise continues during semi-firing even after the piston should have cycled once. (Approx 1-2 sec. of grinding after trigger release.) Using .25 Metal Tech during firing, examined for jamming but there was none. Piston currently appears to be fully forward. Not firing. From doing a quick search of the forums it's suggested that this is either a problem with jamming, which I already did a quick search on, or motor height. If this is the case, do I simply adjust that by tightening the flat-head screw on the bottom of my grip? I'm willing to take the AEG apart and take a gander inside, but I'm not so confident as to not ask for some help first. Thanks in advance to anyone with advice. Last edited by Ashton; May 23rd, 2009 at 19:33..