This is actually fake. Here is how you know. The heli blades are being controlled by gears inside the heli, guess what? The heli turned, thus, meaning that during the turn the blades would either slow down or speed up ever so slightly during that turn. The fact that the blades stayed "stationary" while the heli made the turns in the video is a dead giveaway that this vid is fake. Sorry to burst anyones bubble. I'm sure "helimx" (see above) can agree with me on this.