T-REX 550E 3G Combo Key Features Aerodynamically efficient metal main blade control system, with high rigidity and superior control precision Lightweight, high-precision main gear, with excellent balance and stability Lightweight metal main gear hub Lightweight rigid metal main shaft bearing blocks Integrated swash anti-rotation guide and gyro mounting platform Convenient carbon fiber ESC mount for installation - either on top of the tail boom mount for maximum cooling from the main blades, or under the rudder servo Dual section battery mount for optimal CG position based on battery weight 600 helicopter grade ϕ21.5mm diameter tail boom providing superior rigidity and stability Rear-mounted rudder servo mount improves sides frame strength and protects the rudder servo High speed rated thrust bearings in tail blade grips High effeciency torque tube drive 3-axis gyroscopic flybarless system to simulate the stability of mechanical flybar system, yet at the same time achieving agile 3D performance Utilizes Silicon Micro Machine (SMM) sensors for excellent stability Flybarless system dramatically improves 3D power output and efficiency, resulting in reduced electricity consumption Highly sensitive gyroscopic sensors combined with advanced control detection routine provide greater hovering and aerobatic stability than other flybarless systems Overview Kit Includes: • Flybarless System x1 • Aluminum Tail boom x1 • 520 Carbon Fiber Blades set x1 • 600M Brushless Motor x1 • RCE-BL70G Brushless ESC x1 • DS610 Standard Servo x3 • DS620 Specialized Servo x1 • 90mm 3K Carbon Fiber Tail Blades set x1 Needed to Complete • 7+ Channel Transmitter and Receiver • 22.2V 6S Li-Po Battery, 2600mAh to 5200mAh with compatible Charger • Dial Pitch Gauge Specs: Main Rotor Diameter: 46.8 in (1188mm) Tail Rotor Diameter: 10.0 in (254mm) Gross Weight: 6.17 lb (2800g), approx. flying weight Length: 41.0 in (1042mm) Main Gear Ratio: 1:10.625 Tail Ratio: 1:4.5 Kit/ARF/RTF: Kit Rotor Blade Length: 20.5 in (520mm) Needed to Complete • 7+ Channel Transmitter and Receiver • 22.2V 6S Li-Po Battery, 2600mAh to 5200mAh with compatible Charger • Dial Pitch Gauge