The Hirobo HI0414533 SSZ-IV mixing arm serves as a replacement rotor-mixing component for Eagle Freya series helicopters. It transmits servo and swashplate motion through the mixing linkage without implying any changes to the original design beyond the SSZ-IV designation.
Fitting is straightforward for experienced builders: remove the existing arm, position the SSZ-IV so mounting holes align, and secure with the aircraft's original fasteners. Confirm free articulation across collective and cyclic ranges and visually check the part number before final installation.
From a tuning perspective, the mixing arm is part of the mechanical linkage that sets how swashplate inputs translate to tail and cyclic outputs. Small variations in length or mount position can influence handling, so inspect trim and endpoint settings and conduct cautious hover evaluations following replacement.
Presented as a like-for-like SSZ-IV replacement for Eagle Freya rotorcraft maintenance and tuning where preserving original part numbering is desired.
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