The HI0304044 tail shaft is an RC replacement intended for Lepton-series Hirobo helicopters, forming the primary connection in the tail drive system. It transmits torque to the tail rotor while helping to maintain correct alignment between the main drive and the tail rotor assembly.
Installation notes: examine bearings and linkage components for wear before installing the shaft, make sure it seats properly in the tail case and that spline engagement occurs without forcing parts, and verify tail pitch and tracking after reassembly. Use the correct thread-lock and adhere to the torque settings listed in your helicopter's manual.
Tuning role: a well-fitted shaft reduces drivetrain runout and improves tail responsiveness, lowering vibration sources and making servo setup and linkage adjustments more consistent.
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