Eagle Freya Pitch Arm Set for Eagle Freya Helicopters - Hirobo HI0406003  [HI0406003]

This Hirobo HI0406003 pitch arm set is an RC-scale replacement component listed under Eagle Freya helicopter parts. It replaces the pitch linkage connecting servo output to the rotor head and functions mechanically within the model's collective pitch system.

Installation notes: confirm servo neutral and verify control throw before fitting the new arm, set the blade pitch centered with the rotor head at trim neutral, and ensure the linkage moves smoothly through its full travel without binding after installation. Use the original mount points and fasteners; if fitment does not match, check the parts diagram or contact your supplier to verify compatibility.

Tuning role: the pitch arm directly affects pitch responsiveness and collective balance on RC helicopters. Small variations in arm geometry, servo horn placement, or linkage length will change pitch rate and hover trim, so recheck setup during bench tests and after any swash or travel adjustments.