Hirobo HI0404652 Tail Boom Brace for Eagle, Freya, EX, SX L=500  [HI0404652]

Design and fit for tail boom

This tail boom brace set is designed for use on Hirobo Eagle, Freya, EX and SX helicopters. The HI0404652 code is the part reference and L=500 specifies the brace length intended to match those platforms' boom spans.

Functionally the brace provides structural support to maintain boom alignment under operational loads and gives a consistent starting point when tuning tail stiffness and damping. This helps reduce free play between supports and improves repeatability when trimming tail pitch and yaw.

Installation notes for model builders and tuners:

• Place the brace so its mounting holes line up with your helicopter's existing boom supports and clamps.
• Apply even torque to fasteners to prevent bending the boom or introducing misalignment from preload.
• Once fitted, inspect tail rotor tracking and test tail pitch at low throttle, then verify changes during hover flights.

Practical tuning tips:

• Make small increments to tail rigidity and test after each change; subtle adjustments can produce clear handling differences.
• If you observe vibration following installation, confirm the brace is symmetric and the boom is straight before adjusting tail rotor or gyro settings.
• Use the brace as part of a complete tail setup routine that includes correct linkage geometry and servo centring checks.