Mixing Arm Upgrade for Hirobo Eagle/Freya/EX/SX Linkages - HI0404001  [HI0404001]

HI0404001 mixing arm for Hirobo linkages

This mixing arm is supplied as a replacement listed under Hirobo common helicopter parts for the Eagle, Freya, EX and SX platforms. It serves as the mechanical component that blends servo outputs for rotor pitch and tail mixing on scale helicopters.

Install this arm when restoring factory linkage geometry or swapping out a worn or damaged unit. Fitment follows the mounting pattern used across Hirobo Eagle/Freya/EX/SX common parts; verify your frame uses those attachment points before ordering.

Installation tips: remove the swashplate and disconnect servo linkages to access the old mixing arm, transfer any bearings or pins to the new arm if needed, and confirm there is no binding through the full collective and tail travel. After refit, set neutral pitch and fine-tune transmitter mixing and servo endpoints to re-establish correct rotor response.

Tuning advice: consider the mixing arm a fixed reference point. Adjust control characteristics with transmitter mixing curves or by changing linkage lengths at the rod ends, rather than altering the arm itself.