OK.....thanks for your coments. But can we put some numbers on this issue??
What is big?? Top Flite has a Giant P51 84.5" wing span with 32-35 oz/ft2. Is this is too "heavy" for a plane this big?
Is there any rule to follow? Where should be the limit between "small and big" and "light and heavy" . Sorry for being too specific...............
Thanks

Marcos