390mm carbon main rotor HD390A

Product Description: Suitable for 400 RC helicopters, the new airfoil is designed for intense 3D flight, with flexibility and stability, and unique rigid forming technology that greatly improves the torsion resistance of the rotor, prevents unstable airflow interference at the wing end, and reduces the sound and power loss of the oar. Product parameters: LENGTH length: 388mm (mounting hole to wingtip) GRIP propeller thickness: ≥5mm WIDTH rotor width: 34-36mm HOLE hole position: 3mm (mounting hole diameter) AIRFOIL WING: SYMMETRICAL SYMMETRICAL Product Specifications: MAIN ROTOR 390MM×1 PAIR