Hirobo HI0404637 39mm Cross Bar for Eagle/Freya/EX/SX  [HI0404637]

Direct replacement cross bar

This cross bar is an RC-scale linkage designed to serve as a direct replacement or spare inside common Hirobo helicopter assemblies. It helps preserve the rotor linkage geometry and is intended where the original 39mm bar is required for proper fit and handling.

In function, the cross bar acts as a short linkage member within the rotor and tail linkage system, transferring motion between control linkages and hub parts. Always confirm the 39mm length matches the part being replaced to maintain expected control throws and trim balance.

Installation notes: remove the damaged bar, inspect the bore and mounting orientation, then fit using the model's original hardware. Secure components to the recommended torque and check clearance. Minor endpoint adjustments may be needed after refitting to restore neutral trims.

Care and inspection: routinely check for bends, wear around mounting bores, and any looseness. Replace the part if you detect play or deformation to avoid erratic control inputs.