Quote Originally Posted by jiott View Post
The only downside to flaperons I have found is not as good steep descent rate as regular barn door flaps, but that one deficiency is easily overcome with the Kitfox ability to execute a very aggressive forward slip under full stable control with or without flap(erons) deployed.
I'll add a little bit. The Flaperons simplify the build vs having twice as many surfaces to assemble and install. The Kitfox system is really simple. I'm sure this is at least part of the motivation for flaperons in the RV-12.

On the downside, adverse yaw is more pronounced when using the flaps. I consider myself pretty good about keeping my feet awake, but there was some learning curve keeping it coordinated with the flaps in. I found that leading my turns with a pretty good amount of rudder kept the ball closer to center.