[RKDinOKC]

Don't think it was a tilt rotor. The magazine featured one, it had a LOT of trouble transitioning from slow to fast flight and maintaining control in that size. Also featured a plane that had a twin tail boom and it was a ducted fan type setup where the engine/fan was in the center section and rotated to provide thrust like a harrier's exhaust and rotated for hover vs. flight.

The design was to use one 40 size engine. Difficultly lies in control at low speeds and still be able to attain high speed flight.

Not indoor planes either. Yeah they can fly slow, but takes a LOT of skill to be able to control it. Rules state no special skill to mainatin control in slow flight. I know guys that can hang almost any rc plane on the prop, that don't count. And when you get the low speed control of those indoor planes (super light), you lose the high speed capability. That's one of the reasons those are being flown indoors, they can't even handle a little wind.

You are looking out having to beat points wise a 40 size rc helicopter that can hover. Even though some would say an rc helicopter takes some special skill to hover and fly.