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

O.S. ENGINES SECURITY RING OMA-2820-950 BRUSHLESS MOTOR
Price:
£2.75
Brand:
O.S. Engine
Model:
OS74004071
GTIN:
4531028154339
Condition:
Brand New
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Endbell retention component for OMA-2820-950

This security ring serves as a scale RC accessory for OMA-2820-950 brushless motors, providing a defined retention interface for the motor endbell and shaft assembly. It is designed to engage the motor's existing locating features and reduce axial play under load, aiding consistent gear engagement.

The fitting process is simple for a typical hobbyist workshop: seat the ring on the motor endbell so it bears against the factory features, then secure with the motor's original fasteners or the vehicle motor mount where applicable. Only standard hobby hand tools are normally required, and the component is sized to match common endbell geometries on brushless motors.

From a setup perspective, the security ring is a small but practical upgrade: by keeping the motor assembly stable it helps preserve gear mesh and lowers the chance of intermittent contact during high-speed runs or on uneven surfaces. It is suitable for builders who prefer mechanical solutions that do not modify motor electronics or mounting hardware.

By reducing axial movement of the motor assembly, the ring helps maintain consistent gear meshing which can improve drivetrain predictability during tuning and high-load runs.
The ring is intended to work with existing motor mounting features, but you should confirm there is sufficient clearance between the ring, the mount and any surrounding chassis parts before finishing installation.
No specialised fasteners are normally required; the ring is designed to be used with the motor's original screws or the vehicle's motor mount and common hobby hand tools.

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