helicopter rotors

[matik246]

Alright, alright, i know i'm probably annoying, but i need help again. Is there someone who knows how to properly create and export a model with a rotor spinning animation that would work in the game? I've been trying to get it to work for so long, but i made no progress. Youtube videos on animating don't seem to help me either, i really need help from someone who's done this before. Someone help please :<