Which component transmits power from the starting RIMMS to the high-speed reducing gear?

Which component transmits power from the starting RIMMS to the high-speed reducing gear?

• A. Power coupling
• B. High speed gearbox
• C. Starter motor
• D. Drive shaft

Answer: (B)

The high-speed gearbox is the component that takes the energy from the starting RIMMS and feeds it into the gear train that provides the necessary reduced speed and increased torque to the engine drive system. The starter motor (or RIMMS) supplies the initial rotation, but the gearbox is the interface that transmits that power into the high-speed reducing gear while performing the essential speed reduction. The other parts are just the power source (starter motor) or linkages (drive shaft, coupling) and do not perform the stage of transmitting power into the reducing gear itself.

The high-speed gearbox is the component that takes the energy from the starting RIMMS and feeds it into the gear train that provides the necessary reduced speed and increased torque to the engine drive system. The starter motor (or RIMMS) supplies the initial rotation, but the gearbox is the interface that transmits that power into the high-speed reducing gear while performing the essential speed reduction. The other parts are just the power source (starter motor) or linkages (drive shaft, coupling) and do not perform the stage of transmitting power into the reducing gear itself.