When I built my Supersportster 60 it was supposed to be 6-7 lbs. I fiberglassed the fuselage and built a little heavy. This was probably a good thing because on the 8th flight I dove it into the ground at about 75 mph. It took a whole new right wing and quite a lot of mending, but its been flying after the crash for 2 years. It weights 9.5 lbs and other than the fact that it lands fast, it is still one of my best flying planes!

I know that many of the warbirds are flying as high as 50 oz of wing loading! Now if your doing 3-D then build it as light as you can, but don't expect to survive a little bump. My dad caught a tumble weed on landing with his Uproar 40 ARF and stalled at about 10 feet. This plane was a complete loss! Just about everything was broken! It had more damage than my sporster did with its plunge of death!