Thank you both for your comments. I was able to get ahold of the Reflex people and they did tell me how to get the English translation of the tutorial. I built my plane with RMK over the weekend and it didn't turn out too terribly badly. You do definitely have to be very meticulous, though, when you do it. First you have to have a plane that's very level and plumb and square and perpendicular (I'm a lousy builder so right off the bat I'm in trouble). Then you have to take very good pictures of the planes of the plane (no pun intended) at the exact axes of the CG. Then you have to make a composite of the views in your favorite photo program (I used 1024 X 1024 pixels for the composite....but the individual bmps at 600 pixels on the long side worked ok). Then you have to be very exact when you define you common lines. You need to work slowly with a very large view in the 3D window to make sure all the points you define are the correct ones and that you draw the proper triangles and rectangles for your particular plane surfaces. If I had done all this correctly from the get go, and then been more patient (which I am not and why I am not a very good builder) the plane would have turned out better. But I'm satisfied for a first try.

All this being said, the plane really doesn't have to be perfect, just functionally correct with the movable surfaces and the landing gear so that the plane will translate properly into Reflex XTR. Outside of that, it's the physical parameters that you define from within Reflex that determines the flight characteristics and how true to life your plane flies. The better your work in RMK, the better the plane will look. And the tutorial does give you all the information you need if you take the time to read it carefully. I can't complain too much because I do have my actual plane in the program and I'm actually flying it around.

Regards, and thanks again!