Motorised siren brushless 450

Derived from http://www.thingiverse.com/thing:24282

I just removed the hand cranck, gears, bearing and replaced the parts with a brushless motor I had from a T-rex 450. There should probably be some sort of feet for mounting it on a surface, but that is up to you!

It is quite loud! So mind your neighbour :)

Edit 20/3/2013:
New impeller unit with screw for fixating the wheel on the axis of the motor.