Precision Super Gear A for XRB SR - HI0301109 by Hirobo  [HI0301109]

Product Details

This Super Gear A is an RC-scale replacement part made for the Hirobo XRB SR series, serving as a direct drivetrain component in hobby helicopters. It covers situations where the main or intermediate gear needs servicing, facilitating torque transmission and helping control mesh and backlash.

Installation fundamentals: prior to installing, inspect mating gears and bearings for wear, ensure correct axial placement on the shaft, and set gear mesh with minimal backlash to prevent rapid tooth degradation. Keep the original XRB SR housings and spacers to preserve factory alignment.

Tuning role: the gear impacts drive smoothness and the way power is delivered; small adjustments to mesh and alignment can alter vibration and efficiency. When fitting Super Gear A, check engagement throughout the RPM envelope and review any related pinion or spur positions in the XRB SR drivetrain.