OMP M4 Flybarless 3D Heli in the 400 class. Large, powerful Direct Drive Brushless main motor R8110 (185KV). Tail with belt drive. Combo kit includes ESC and servos (3x DS2312C, 1x DS3515T). Robust and durable 8 mm main rotor shaft, 5 mm blade bearing shaft, and 5 mm tail rotor shaft. Large pitch ranges possible ±14°. Compact and symmetrical servo arrangement. Pitch-controlled helicopters typically always operate at the same speed. To ascend or descend, the angle of attack of the rotor blades is adjusted. The advantage of this method is that the helicopter responds without delays. This allows for demanding aerobatic and 3D maneuvers, but requires certain skills. Therefore, pitch-controlled models are primarily suitable for professional pilots. Brushless motor. A brushless motor is an electric motor without brushes, which, compared to a brushed motor, is characterized by higher efficiency, less wear, and lower weight. Difficulty level: Advanced. You possess basic knowledge and have the necessary experience and appropriate tools to correctly wire your model if needed and safely operate it. Kit. Kits are model components that need to be assembled and may require additional parts. This allows for diverse configuration options but also requires some prior knowledge in model building.