Sailing Parlay Revival · video

What this video covers

The crew of the Lagoon 450 *Parlay Revival* diagnoses a persistent knocking sound in their sail drive while cruising in New Zealand.0:31 After eliminating the clutch assembly as the source of the noise, they perform an underwater removal of the folding propeller to isolate the fault.1:11 Running the engine without the prop confirms the mechanical failure originates within the lower unit of the sail drive.9:58 The crew hauls the boat out at Opua to inspect the leg, where they discover a broken gear tooth.16:38 They attempt to replace the damaged SD50 sail drive with a donated SD60 unit, but find the two models incompatible due to significant differences in spline count, gear design, and mounting dimensions.17:39 The repair requires either machining the existing shaft or sourcing a direct replacement for the SD50. The crew documents the process of troubleshooting mechanical drive issues, underwater propeller maintenance, and the complexities of retrofitting different sail drive models.

Boats in this video

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