I just finished building a flying wing and the wings folds, 1/2 a size  
Gil Morris 

I used the micro timer from Bob Stalick in Jack Knife ( flying wing design) and it worked well but  the model spins like a top going up from engine torque, Plan to build Swing Wing Delta in place of Jack Knife in hopes of improving performance from less spinning which eats up energy.. See Vladimer Sychov article of 2012 of similar history http://www.thebuildingboard.com/2012/02/vladimir-sychovs-folder.html  Thought you might wonder where the Micro Timers are going.   Gil