ORIGINAL: speedracerntrixie
Nothing like it is made anymore. Quite unique, the wings are foam with obechi sheeting. The turtle deck is a molded shell with obechi inner layer and balsa outter. Yes they fly really well. One reason I am scratch building a slightly smaller version. Look in this forum for " Dalotel build." The one pictured was sold but now with classic pattern gaining popularity i wish I had it back.
SRT,
I owned one of the Rogas in early-mid 80's. It was highly endorsed by Hanno Prettner as I recall. Yes to the foam and yes to the Obechi covering of wing and stab. Heavy by today's standard but okay for the day back then, and it took ding resistance to a whole new level. Obechiis tough as nails except extremely grainy and easy to split when working withit. 1/64" ply is just as tough, same weight,but not prone to splits
As I recall, Hanno had cut the wing tips at a 45 degree angle to help with roll couple I suppose. The OP's model didn't have that feature in his wings. If the model was recovered at some point, maybe the owner didn't like the angled tips and cut them off??