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

Precision pitch arm for Sceadu SZ-V rotor heads

This component is a purpose-made replacement part for the Hirobo SDX Sceadu SZ-V rotor head family. It links the swash/rotor head to the blade pitch assembly, translating servo inputs into controlled pitch adjustments.

Installation notes: install the arm inline with existing head linkages and confirm correct seating on Sceadu SZ-V mounting points before torqueing hardware. Verify swashplate alignment and free movement of all linkages; trimming excess thread on link screws can help avoid binding during full travel.

Tuning impact: the pitch arm affects cyclic sensitivity and pitch symmetry. Pairing a correctly centred arm with balanced blades and properly seated bearings promotes steady hover and predictable cyclic response. Check mating hardware and bearings when replacing to avoid adding slop or binding to the control path.