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

Mixing Arm Overview

The Hirobo HI0412213 mixing arm fits the Sceadu Evolution FZ-4 rotor head assembly and functions as the mechanical link that blends cyclic and collective inputs. Its geometry and wear state will directly influence head responsiveness and trim stability.

This component is supplied as a direct replacement or spare for Sceadu Evolution FZ-4 rotor linkages and is used where precise mixing and predictable cyclic response are needed. When replacing the arm, check seating and free play at pivots, and confirm swash travel and servo endpoints after reassembly.

Small adjustments to mixing arm alignment or endplay can alter pitch curve and cyclic authority, so re-evaluate hover trim and low-speed stability once fitted. Use this item only as an RC hobby component and do not use it in any full-size vehicle application.