Hirobo HI0406003 Pitch Arm Set for Eagle Freya helicopters  [HI0406003]

This HIROBO HI0406003 pitch arm set is an RC-scale replacement component listed under Eagle Freya helicopter parts. It serves as a direct replacement for the pitch linkage that connects servo output to the rotor head, and its role in the airframe is purely mechanical within the model's collective pitch system.

Installation notes: verify servo neutral and control throw before fitting the new arm, ensure the blade pitch is centered with the rotor head at trim neutral, and confirm smooth, end-to-end travel without binding after installation. Use the original mount points and fasteners; if any fitment discrepancy is found, consult the model's parts diagram or your supplier to confirm compatibility.

Tuning role: the pitch arm affects pitch responsiveness and overall collective balance on RC helicopters. Small changes in arm geometry, servo horn position, or linkage length alter pitch rate and hover trim, so fitment should be checked during setup flights and after any adjustments to swash or servo travel.