RE: FOCUS II ARF construction by-the-numbers
OK, sounds like just about everyone is finishing up theirs. I'll give credit for starting this kit to my son, who kept asking me when "we" could build it.
Fit the engine box. As Doug said on his, trimmed 5/8 for a perfect fit. I looked at both my FOCUS I's and realize I prefer a little more down and right thrust. I built this in to try and get it a little closer to start out... I trimmed the right engine box side 1/16 less (9/16 rather then 5/8). Attached is the diagram with the Hyde ARI mount and YS 140DZ engine.
Drawing attached....
Don