O.S. Engine OS74004071 Security Ring for OMA-2820-950 Brushless Motor  [OS74004071]

Security ring for OMA-2820-950 motor

This security ring is an RC-scale accessory intended to work with OMA-2820-950 brushless motors to provide a positive retention point for the motor endbell and shaft assembly. It is designed to interface with the motor’s existing mounting features and help limit axial movement under load, contributing to steady pinion-to-spur engagement.

Installation is straightforward for hobby workshop use: position the ring on the motor endbell so it seats against the factory features, then secure using the motor’s original fasteners or the vehicle’s motor mount as applicable. No additional tools beyond standard hobby hand tools are required, and the part is sized to align with typical brushless motor endbell geometry.

In tuning and setup, the security ring is a small but practical item: by keeping the motor assembly stable it aids in maintaining gear mesh and reduces the chance of intermittent contact during high-speed runs or rough-surface operation. It suits builders who prefer predictable mechanical retention without altering motor electronics or mounting hardware.