SX Series Rotor Root End HI0404507 Compatible Linkage Part - HIROBO  [HI0404507]

Tuning and linkage geometry

This HIROBO HI0404507 SX root end is designed for users who need precise control over rotorhead and tail linkage geometry. As a replaceable root joint, it helps maintain consistent linkage lengths and minimizes unwanted slop during trim and tuning sessions.

Compatible with common parts sets for Eagle, Freya, EX and SX platforms, the part is intended to be swapped in when adjustments or tuning demand a stable, predictable pivot point at the rotorhead. It supports setup checks and fine adjustments during bench or field tuning.

When installing, insert the root end into the matched rod end and secure it with the original retaining hardware, then confirm smooth rotation and correct travel across the rotor sweep. After replacement, re-establish collective and tail geometry to ensure trim settings remain consistent during flight tests.