Visit Ed Mooeman's web site for more information on anhedral, and other interesting "R/C stuff".
http://members.cox.net/moorman1/ProjectJoss.htm
I failed to give Mr. Moorman credit in my previous post. The SK50 shown is a unabashed copy of Ed's SK50, an original modification by Mr. Moorman.
Thanks Ed, for a fun project. I still get a kick out of the looks that it gets on the flight line!