Hirobo HI0412213 Sceadu Evolution FZ-4 Rotor Head Mixing Arm  [HI0412213]

Rotor Head Mixing Arm

The Hirobo HI0412213 mixing arm is an RC-scale rotor head component intended for the Sceadu Evolution FZ-4 rotor head assembly. It serves as the mechanical link that governs mixing between cyclic and collective inputs, so its condition and geometry directly affect head responsiveness and trim stability.

This part is presented as a direct replacement or spare for the rotor head linkage on Sceadu Evolution FZ-4 models and is used where precise mixing and predictable cyclic behaviour are required. When replacing the mixing arm, verify seating and free play in the pivot points and confirm the head swash travel and servo endpoints after reassembly.

In tuning, small changes in mixing arm alignment or play can change pitch curve and cyclic authority, so recheck hover trim and low-speed stability after installation. Treat this as an RC hobby component only and avoid using it in any full-size or real-vehicle application.