The Hirobo HI0412213 mixing arm is a component tailored for the Sceadu Evolution FZ-4 rotor head, acting as the control link between cyclic and collective inputs. Any deformation or play will affect responsiveness and trim.
Provided as a replacement part for Sceadu Evolution FZ-4 rotor head linkages, it should be installed with attention to pivot seating and endplay. After fitting, confirm swashplate travel and servo endpoint settings.
Tuning changes to the mixing arm alignment can influence pitch curves and cyclic authority, so verify hover trim and low-speed stability after installation. Use this item only for RC hobby purposes.
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