Hi atvracer, I have an 80" wingspan CAP 21 that has a 30 ounce per square foot wing loading and it flies fine, but forget most 3D. It weighs 14.5 pounds and has a Super Tigre 3000 30cc motor. Haven't tried spoilerons yet but have tried flapperons which seem to do nothing [sm=angry.gif]. Now if it weighed 10 to 12 pounds.....