I finally got around to doing a proper diagram of the Lego autopilot construction. I tried Google Sketchup using the public domain Mindstorms NXT objects, but before I could get very far Lego itself released all the Mindstorms NXT parts for its own much-improved Digital Designer 2.0. You just can't beat that for ease of use, so now you can have proper instructions. Thanks Lego!

If you've installed Digital Designer you can load the autopilot file here: Download legouav.lxf

For the rest of you, here are screenshots. The red circles and dotted lines are recommended places for screws, either into the plywood of the instrument floor in the plane or into the Lego parts below. These diagrams are just one way to put it together; feel free to tweak and replace parts as needed to fit your own servos and plane. How you attach the R/C servos is up to you, although I find a combination of Lego studs, CN glue and rubber bands does the trick nicely. (Click on the small pictures for larger ones.)

End view:

Side view:

Photo of the real thing:

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