burning smell on the motor

[Defcon_Carl]

Hi, I was reassembling my mp5 and when I tried to shoot it after it sounded a whole lot different and I could feel the motor vibrate on the handgrip. When i tried pulling out the motor it smelled like something burning. Any advice?

Thanks,
Carl

[LUTNIT]

Looks like you need to adjust your motor height. What I do which is quite different than what most do, is tighten the little allen bolt on the bottom of the handgrip until it stops (motor all the way up) then back it off one full rotation and fire the gun on semi. Back it off another half turn, if it gets quieter then back it off another half turn, if it gets louder turn it back to where it was before when it was quieter.

I find from the position of being all the way in the motor has to be dropped 1-2 full rotations of the allen on average. Chances are if there was a burning smell then the motor was too far in and was being jammed against the bevel gear, adding a whole lot of resistance and making the motor work more than its designed for.

[Defcon_Carl]

ok no matter how much i adjust it it still makes the same sound. Was it because I wiped off the excess grease on the mechbox? I mean the gun still shoots fine. same fps same rof but it just sounds a lot louder than when I didnt break it open. any thoughts?

Thanks,
Carl