Originally Posted by
hamster
I find it improbable that any aircraft, even human-powered and tiny, can maintain the average airspeed of 18.9 mph for 4 hours without stalling and crashing.
It's pretty easy to go that slow when the plane weighs 70 lbs empty, and has 330 square feet of wingspan.
youtube.com/watch?v=kdwLB0yoGmE#t=18m1s