[ancorp]

Have an AUG that was laying in a box for a while because it never performed too good. When I got it it fired only 220fps with .2s.

Completely stock inside. Internals look minty, but the spring is clearly too soft. Stock TM spring with the hook that attaches to piston.

To make sure the spring was the problem, I replaced it with a stock Cyma AK spring that fired 290fps.

Fires 300, all good. But the fire rate is low. It was kinda low with the 220 spring also. Wiring is perfect, battery top notch. Everything seems 100%. The gearbox sounds smooth, shimming and motor height don't look like they could be a problem. I'm guessing it has seen a lot of rounds, thus a weakened spring, and perhaps a completely worn motor?

I don't know that much about motor life, but I assume they slowly lose efficiency/RPM and then just die.

I'd swap the motor with an ICS 3000 to do a quick test, but the AUG motor is soldered on, and I'd hate to take it out and find out it's not the problem.

Anyone have similar experiences and solutions? Could be anything but the motor?

Thanks!
Alex