Sailing NV · video

What this video covers

Installing a J-PROP propeller on a new gearbox requires replacing the internal spline insert to match the specific shaft dimensions of the new transmission.0:18 The J-PROP design features a modular three-part body and a sacrificial rubber-ring anti-shock system, which protects the gearbox and damper plate from damage if the propeller strikes an object.6:20 During installation, the technician must use a specific spacer ring—distinct from the original ZF spacer—to ensure the propeller sits correctly on the shaft without contacting the sail drive leg.10:39 The process involves greasing all components with a Teflon-based polymer grease, such as the 4002 formula, and aligning the spline insert with the shaft before securing the assembly with a central extractor nut and a conical safety locking bolt.16:27 While the propeller includes an optional pitch-locking ring for high-horsepower engines, it is unnecessary for the 59-horsepower Nanni N4.65 engine used on this vessel.21:11 Regular factory servicing allows for the remachining of propeller components to maintain tight tolerances and eliminate vibration over decades of use.1:20

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