SDX SCEADU SZ-V Replacement Pitch Arm HI0412328 - Hirobo  [HI0412328]

Replacement pitch arm for SDX Sceadu SZ-V heads

This pitch arm serves as a direct-replacement RC-scale part for the Hirobo SDX Sceadu SZ-V rotor head assemblies. It acts as the mechanical linkage between the swashplate and blade pitch mechanism, converting servo movement into accurate blade angle changes.

Installation notes: fit the arm inline with existing rotor head linkages and confirm correct engagement on the Sceadu SZ-V mounting points before final tightening. Check swashplate alignment and ensure the linkages operate freely without binding; you may trim a small amount of thread from link screws to allow full, clean travel.

Tuning role: the arm influences cyclic response and pitch balance, so use a properly centered arm with balanced blades and well-seated bearings to help maintain a neutral hover and consistent cyclic feel. Inspect mating hardware and bearings during replacement to prevent introducing play or binding into the control chain.