OK, I'm at a loss here. I am about to venture to the shop and cut out my ailerons on my eclipse. I have built numerous pattern planes for myself and others, and cannot vision a case where center hinging was ever a problem as long as you capped the TE of wing and LE of aileron cutouts with 1/4 balsa, sand your bevel on the LE of the aileron, and you were done. Now I must admit, I have never built a pattern plane with this much taper (sweep) on the wings, but I still cannot convince myself this is a problem as long as I surround with the customary 1/4" balsa.
Maybe its a case of these being in the ARC (prebuilt wing and aileron) version where there is just not enough wood to do a proper center bevel. That I could understand, as It seems most of the European and more and more American builders are adopting this method, and the ARC may have been cutout and surrounded expecting top hinging to be used.
Right? Wrong? .