What causes aeg vibration?

[Boo-Sabum Ben]

This had me stumped yesterday, tried mates vfc pdw, and a magpul moe m4. Both these guns, when firing, give a slight positive vibration as they fire. It's a nice feeling, but neither my dboys pdw or Cyma AK do the same thing, and was wondering what it is that provides this feeling

[Montesa77]

Re: What causes aeg vibration?

A light mass but being jerked back and forth 15 times a second, the piston. Think of a single piston motorcycle engine, that vibrates like hell at high rpm. But with a 2 piston set up there is alot less as the forces counter-act eachother.


They most likely have a heaver piston or are running at faster speeds. Or run alot smoother cause it to have less friction therefor the piston slides on the rails easier.

[Boo-Sabum Ben]

Re: What causes aeg vibration?

Ah ok, so more energry goes into the piston head hitting the end of the cylinder, causing a bit more judder each time?

There was quite a lot of feeling in the grips of the two guns, do motors have something to do with it as well?

[Boo-Sabum Ben]

Re: What causes aeg vibration?

after having my gun serviced at my local shop, mine does this as well now. Chuffed!

[UndeadGhost]

Re: What causes aeg vibration?

I have one of the airsoft innovations units in my m4 and when its just about to run out of battery it warns you by vibrating the gun lol, the motor for sure vibrates, and i think that the part of the unit in the crane stock may vibrate too lol

[Boo-Sabum Ben]

Ah right cool. Wasn't really what I meant though! Interestingly, taping the motor in the AK up to keep it more solid undid this nice effect, as did changing the grip, so that seems to have a large effect too