Ultimate Biplane-0.jpg 56.4 KB · Views: 65 Horizon E-flite Ultimate 3D AS3X . Safe Select . With Reverse . 4s 2200Mah lipo . BL10 Brushless Outrunner 800Kv . Reverse is on CH7 (Switch A) . Safe Select is on CH8 (Switch B) This variant requires: Ultimate Biplane from RealFlight 9 Reactions: JayK