I recieved the motor and fan from EJF yesterday and put them in the Typhoon. I tested it out and it's close to 1 to 1 on the thrust, she floats out of my hand at WOT pointed straight up. I had to move the battery all the way to the front to get her to balance but it's right on with no added weight. I think this thing was designed for a 70mm fan set up. I'm test flying her today and will report back later.