Blade Retainer for SRB Helicopter Hub - Hirobo HI0302043  [HI0302043]

Installation and maintenance notes

This RC accessory fits Hirobo SRB-series helicopter components and secures the blade root at the hub to maintain alignment during setup and flight operations.

Compatibility targets SRB-series helicopter assemblies, so confirm your hub and hub carrier dimensions before installing. The SG suffix identifies the variant but does not indicate the construction material.

Fitting advice: inspect contact surfaces for burrs, align the blade root seating carefully, and torque fasteners to your hub hardware specification. Minor play at the blade root may introduce vibration, so check balance after fitting.

Operational effect: the holder helps stabilise blade tracking and pitch under load. When tuning, apply small adjustments to track or balance and re-test rotor smoothness to avoid harsh vibration.

Service tips: check for deformation or wear before flights, ensure retaining screws remain tight, and replace the holder if cleaning and minor corrections do not restore correct alignment.