HIROBO HI0402011 Shuttle Root End for Shuttle Linkage Service Replacement  [HI0402011]

The HIROBO HI0402011 shuttle root end is an RC shuttle linkage part intended for installation in Hirobo helicopter shuttle assemblies. It is the terminal connector that passes input from the cyclic linkages to the swashplate or rotor head in compatible Hirobo models.

Use this component to replace root ends that show wear and degrade control precision. The focus here is on correct fit, orientation, and the role this part plays during setup and trimming rather than on exact hardware measurements. For fitting, confirm mating points match the existing linkage, inspect bearings and fasteners for wear, and secure fixings to the manufacturer's torque recommendations with suitable tools.

During trim and tuning, verify unrestricted shuttle travel and ensure no binding at the root end across full stick travel. Replacing a worn root end helps restore smooth shuttle operation and supports repeatable cyclic adjustments during maintenance.