XRB SR Compatible Super Gear A - HI0301109 by Hirobo  [HI0301109]

Key Features and Installation

The Super Gear A replacement for the Hirobo XRB SR series is an RC-scale drive gear intended for hobby helicopter transmissions. It is used when main or intermediate gearing requires service and plays a role in torque transfer while helping manage gear mesh and backlash.

Installation fundamentals: inspect the mating gear teeth and bearings for deterioration prior to installation, make sure the gear is positioned correctly on the shaft, and adjust mesh to have minimal backlash and no binding. Retain the original XRB SR housings and spacers to preserve alignment.

Tuning role: this gear influences the smoothness of the drive and the transmission of power; small mesh or alignment deviations can change vibration characteristics and efficiency. After installing Super Gear A, confirm engagement across the operating range and re-check associated pinion or spur gear settings on the XRB SR drivetrain.