Hirobo HI0404743 Carbon Collective Arm A Compatible with Eagle/Freya/EX/SX  [HI0404743]

Carbon A-Side Collective Arm Compatible with Eagle/Freya/EX/SX

This A-side carbon collective arm is designed for use on Hirobo Eagle, Freya, EX and SX helicopter families. It serves as the swash-to-rotor A-side linkage arm and is offered as a replacement or upgrade to maintain direct collective authority.

Compatibility is determined by the HI0404743 designation and the official parts lists for Eagle, Freya, EX and SX platforms. Fitment is intended for hobby RC helicopters and not for manned aircraft.

Installation guidance: remove and inspect the existing linkage pins and ball links, note the lever orientation relative to the swashplate before removal, and set servo endpoints and travel limits after installation to ensure correct blade pitch range. Fine adjustment of collective throw and endpoint travel will help dial in responsive control.

Care tips: monitor the arm and fasteners for any signs of cracking or looseness after flights, and replace any fatigued link pins to preserve consistent collective performance.