RE: Excelleron 90
Finally flew today. Four flights, feeling things out. First, the 90 two-stroke will HAVE to be on a pipe. Right now, on 10%, it's not "Advanced" class capability - needs mor UP-ness. So that will have to be sorted out. Second - flight performance is outstanding, although the control setups I have are NOT sensitive. Maybe a matter of taste, but the 15 degrees on elev and ailerons is almost just about right to me. VERY nice, stable airplane, straight and solid. Snaps just beautifully, and spins like it's a real plane. VERY, very nice.
Third - CG - I have mine at 7" and that is WAY too nose heavy, as it takes a BUNCH of down elevator to hold level inverted, and lots more for inverted snaps. I'm thinking 7 1/4", maybe more aft will be needed. But even through the balance issue, this is an airplane that really does handle like a "big one". I am not disappointed at all, and when I sort out the CG and get some more punch, it will be Masters' capable, and that's no bull.
This is a really good airplane, guys.