Hirobo HI0412116 Main Gear Stopper for Sceadu SD  [HI0412116]

Stopper for Sceadu SD main gear

This RC replacement piece is the designated main gear stopper for Sceadu SD models, intended to stabilise the main gear assembly while you perform setup or maintenance. It provides a positive locating function so the main gear remains positioned during meshing adjustments or transmission servicing on Sceadu SD helicopters.

To install, remove the main gear cover to expose the gear seat, insert the stopper into the correct mounting point on the Sceadu SD main assembly, and verify axial position and running clearance before completing reassembly. Use accepted RC fastener practice when tightening and confirm the gear train spins freely after the job is finished.

When tuning, the stopper supports repeatable mesh checks and temporary locking when working on the rotorhead or drivetrain. It is supplied as an RC hobby replacement and should only be used on Sceadu SD airframes that specify the original part.