I can knock out a plane in X Plane 9 in about 4 hours. That is modeling, weight, and balance, engine design, and cockpit design. however Ive got to think that x plane 9 makes it a lot easier to model something seems how most of the physics is done automatically lol. The basic shape is definately the easy part. once your done with that you can start crunching the numbers and making the dam thing flyable.
