Actually, The Biggest, but... but, I wanted to catch your attention. 
I propose the challenge of designing/building/flying the biggest wingspan model possible with the following constraints...
I propose the challenge of designing/building/flying the biggest wingspan model possible with the following constraints...
- It must be a motor powered model... electric, fuel... your choice. The motor has to be strong enough to show positive altitude gain. No sailplanes cheating with a watch battery and a 8520 motor and a 1.5" propeller going along for the ride.
- Must weigh equal or less than 2 pounds - The idea that it meets AMA Park Flyer classification. There are no "adjusted weight" winners. Being less than 2 pounds doesn't get Brownie Points. Being over is a bust.