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Old 02-28-2013, 05:19 PM
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AEG Spring Noise

Howdy,

I have a quick question for my fellow gun techs out there. When I fire my G36, after the cycle is complete, there is a ringing from the gearbox that I presume is the main spring vibrating against the gearbox shell. While not really a bad thing, I find it to be rather annoying. Does anyone have a way to fix this?

The first thing that came to my mind was wrapping the middle of the spring in a layer or two of teflon tape, although that might come off rather quickly.

Any ideas are appreciated.

Cheers.
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Old 02-28-2013, 06:24 PM
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Pretend it's an AR-15: The spring sound means it's working properly!

I've never heard of anyone finding this sound annoying (I haven't ever personally noticed it,) so I don't think anyone's ever tried to silence it. I think you'll just have to experiment to find something that works.
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Old 02-28-2013, 06:26 PM
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In later model CA guns I found this to happen alot. Only thing I ever did was change springs if it really got under my skin.
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Old 02-28-2013, 06:54 PM
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Yeah I remember this happening to the CA x series from 2010. We thought it sounded funny, but never effected performance.
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Old 02-28-2013, 06:58 PM
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Maybe add a piece of surgical tubing on the spring guide.
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Old 02-28-2013, 07:05 PM
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Quote:
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Maybe add a piece of surgical tubing on the spring guide.
That sounds like it would work if it's the spring guide. Maybe put some electrical tape on the inside of the shell along side of the spring. Just a thought.
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Old 02-28-2013, 07:10 PM
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Quote:
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That sounds like it would work if it's the spring guide. Maybe put some electrical tape on the inside of the shell along side of the spring. Just a thought.
I would, but remember the piston still has to be able to move over the rails without tape in the way.

Thanks for the feedback, guys. Keep it coming.
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Old 02-28-2013, 07:13 PM
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You regret selling the SL8, don't you? And I got the surgical tubing idea from Sparky on ASR. He was using it for the Dong San SPAS-12 which I now have.
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Old 02-28-2013, 08:39 PM
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Quote:
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I would, but remember the piston still has to be able to move over the rails without tape in the way.

Thanks for the feedback, guys. Keep it coming.
Oh yeah, well I tried haha. I thought there was something weird about it.
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Old 02-28-2013, 08:48 PM
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I've had this with every AEG I've ever owned and it frustrated me. I found that actually AOE and shimming helped, but it was the actual spring tension that gave it that noise. I think that's why I prefer Gbbr's.
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Old 02-28-2013, 08:59 PM
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Ball bearing spring guide with a ball bearing in your piston might help...
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Old 02-28-2013, 09:12 PM
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Quote:
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]I found that actually AOE and shimming helped, but it was the actual spring tension that gave it that noise.
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Ball bearing spring guide with a ball bearing in your piston might help...
I have done all of that. I'm mainly looking for an idea to dampen the vibration against the GB shell.
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Old 03-01-2013, 12:13 AM
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I hear it in a lot of clone guns especially JG. It's usually from what I've found is that the stock spring is a little shorter than a better quality spring and bounces back and forth a little after the gun cycles. Or you need a ball bearing spring guide to help reduce stress on the spring if it is in fact moving around.
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Old 03-01-2013, 12:06 PM
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I think tubing on the spring guide is on the right track, but it might be a lot easier and more effective to decrease the inside diameter of the piston (if you could find the perfect diameter tubing with a thin enough wall). It would be hard to apply anything to the spring guide due to it being tapered. Also I've found a large variance in spring diameter from different manufactures, the fatter the spring the less it will sway inside the piston and contact the gearbox.
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Old 03-01-2013, 12:56 PM
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I can't tell for sure, but the quality of springs and a thicker BB spring guide should solve your problem.

CA 2010 X Series had this problem, MAJOR, as well as most stock JG.
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Old 03-01-2013, 02:36 PM
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Take the spring out.
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