Cross Bar 39mm (compatible with Eagle/Freya/EX/SX) HI0404637 Hirobo  [HI0404637]

Spare cross bar overview

Designed for RC helicopter linkage systems, this 39mm cross bar serves as a spare or replacement part in Hirobo assemblies. It maintains the intended rotor linkage geometry and is suitable where a 39mm component is required for correct fitment.

The component functions as a short coupling in the rotor/tail linkage network, conveying motion between control arms and hub parts. Ensuring the replacement is 39mm keeps control throws and trim balance consistent with the original setup.

Fitting advice: remove the old cross bar, check alignment and bore condition, then install the replacement using the original mounting hardware. Tighten fasteners to appropriate torque and verify clearances. You may need to fine tune control endpoints after installation to regain neutral trims.

Routine checks: inspect for bends, wear at attachment points, and secure seating. Any detected play or deformation should prompt replacement to avoid unpredictable handling.