Hirobo Helicopters Hirobo SST Eagle Freya Engineered to Handle the Stresses of Performing and Learning 3D Maneuvers Hirobo took the best of the WC Eagle and refined the design, components and a variety of adjustments for full-on 3D aerobatics. The result: a born for 3D helicopter, an offspring a world champion could be proud of. To help absorb crash landings, Hirobo took the four piece stacked WC Eagle 2 EX main frame and made it out of high impact engineering plastic that delivers durability and controlled weight. It's designed to absorb and flex, not break. No more bent main frames. And using plastic instead of carbon fiber or metal means your radio system experiences less vibration and noise interference.  If your looking for a 3D heli you can't outgrow, this is it. The first serious 3D machine at a sensible price point. The best of the World Champion Eagle, now evolved for 3D. New Belt Drive Tail Gear Box Design Straight forward, discrete use of basic components results in a very precise tail pitch mechanism, simple drive train and less points of wear for today's harshest 3D flying styles and gyro combinations. Split Gear Constant Tail Drive System New split gear arrangement allows constant drive power to the tail whether in "on power" or "off power" conditions as in autorotations or normal flight mode landings. FFZ Rotor Head Mixing arms and seesaw allow different Bell/Hiller ratios for any style of flying. Three flybar feedback ratios are available to satisfy the flying styles of any flier from novice to full hot dog 3D pilot. New mixing arms offer 19 to 25 degrees of collective pitch.