HIROBO HRB-0404744 Dumper Rudder (80) tail rudder  [HRB-0404744]

Dumper Rudder (80) overview

This is an RC-scale tail rudder supplied as a common replacement part for Hirobo helicopter lines. The Dumper Rudder (80) serves as the tail control surface used to influence yaw and tail stability on compatible models within the Eagle, Freya, EX and SX families.

Constructed as a molded plastic component, the part is intended for straightforward replacement during routine maintenance or after impacts. It functions as a direct control surface, transferring servo inputs into directional tail movement and providing a predictable reference for trim adjustments.

Installation notes: the rudder mounts to the helicopter tail assembly using the existing linkage and fasteners on supported airframes, align the control horn and linkage with neutral servo output before final tightening, and verify free range of motion to avoid binding. For tuning, small changes to tail trim and servo endpoints will affect yaw responsiveness and hover stability, so make incremental adjustments and test hover performance after each change.