OMA-28 Propeller Shaft Set M3 Motor Shaft - OS74004061 by O.S. Engine  [OS74004061]

Propeller shaft set summary

This propeller shaft set from O.S. Engine is made for OMA-28 motor interfaces and M3 shaft fittings. It serves as the motor shaft and propeller coupling piece that connects a motor output to a propeller or driveline element on scale RC aircraft and related models.

The part secures the propeller while preserving axial alignment. When replacing the shaft or adjusting prop mounting, pay attention to thread engagement and concentric fit; the M3 thread size is the reference to confirm before fitment.

Installation notes: confirm the motor and prop hub match OMA-28 and M3 dimensions, start the thread by hand to prevent cross-threading, and tighten progressively following good fastening practice. After installation, check propeller runout to ensure balance and smooth driveline performance before flight or operation.

Maintenance and tuning: inspect the shaft for wear, corrosion, or deformation prior to reuse, and keep mating surfaces clean. If vibration or imbalance occurs after replacement, re-check shaft seating and prop seating to restore proper driveline alignment.