This T-Rex simple and light weight design provides awesome flight performance nearly equal to larger helicopters while still maintaining very stable hovering and flight. +-14� collective pitch is possible for extreme 3D performance. Clutch, Fan and Bell assembly provide a very smooth operation even at high RPM. Forward mounted tail servo helps to keep exhaust oil from entering servo also improves the CG. Pitch and All servos moved forward for CG. Battery tray designed for easy and clean radio gear installation. Fuel Tank Capacity 440cc for about 10 minutes 3D flying. Main Gear Radio 8.5:1, 1500-2200 Rotor RPM. Heavy duty tail with thrust bearings. 95mm Tail Blades. Belt driven tail for incredible 50 sized performance. Rigid frame design that can also handle hard crashes without damage. G-10 3K Fiber frames, fins and boom supports. Super engine cooling system features large diameter fan and very efficient airflow to provide unequaled cooling and horsepower. Clutch/Start shaft feature a 10mm ID one way bearing to eliminate any bearing problems during starting and flight. Ready to fly weight (no fuel) is an incredible 3.20Kg (7lbs). Fuel Tank designed so that no additional header tank is required. New main gear with one-way bearing design for high torque. New flybar paddles feature light weight and sports. New flybar control set design. New tail boom supports.