Eagle/Freya/EX/SX Tail Boom Brace L=500 - HI0404652 by Hirobo  [HI0404652]

Tail boom brace summary

This RC tail boom brace set is made to fit Hirobo Eagle, Freya, EX and SX helicopter layouts. The HI0404652 part number identifies the factory reference and L=500 denotes the brace length matched to those tail boom spans.

The brace acts as a structural support to keep the tail boom aligned under load and gives a stable baseline for adjusting tail stiffness and dampening. In use this reduces slack between boom supports and makes tail pitch and yaw tuning more repeatable during hover checks.

Installation notes for model builders and tuners:

• Align the brace so its mounting points match the helicopter's existing boom supports and clamp locations.
• Tighten fasteners evenly to avoid bending the boom or creating preload that misaligns the assembly.
• After installation, verify tail rotor tracking and check tail pitch response at low throttle, then confirm changes under hover.

Practical tuning tips:

• Increase tail rigidity in small steps and test between changes; modest tweaks often yield noticeable handling differences.
• If new vibration shows up after fitting the brace, check mounting symmetry and boom straightness before altering the tail rotor or gyro gains.
• Include the brace in an overall tail setup routine with correct linkage geometry and servo centering checks.