🔍 Key Concepts

• Location of the clutch glands in the reduction gear housing relative to the input (engine) shaft and the output (propeller) shaft • How reduction gears change speed between the engine and the propeller shaft • Whether the clutch components are mounted on the input shaft, output shaft, or an intermediate shaft

💭 Think About

• Trace the power flow from the engine flange through the reduction gear to the propeller shaft. On which shaft do the clutch assemblies appear to be mounted? • Look at the gears connected to the clutch glands: do they match the small high‑speed pinion, the large low‑speed bull gear, or a shaft between them? • Ask yourself: if the clutch is used to connect/disconnect drive, would it normally be on the high‑speed side, low‑speed side, or somewhere between, and why?

✅ Before You Answer

• Identify which shaft in the illustration is the engine input shaft and which is the propeller output shaft. • Confirm whether the clutch glands are drawn concentric with that shaft or with another intermediate shaft. • Consider that the rotational speed of any component is fixed by the shaft it is keyed or splined to— verify which shaft that is before choosing your answer.