MJ Sailingvideo
Why We NEED a Feathering Prop (MJ Sailing - Ep 300)
September 2, 2023 · 20 min · 49K views
What this video covers
The owners of a custom-built catamaran are installing a SPW Variprop feathering propeller to optimize their hybrid electric propulsion system.15:21 Because the boat is a lightweight performance vessel capable of high speeds, the crew requires a propeller that can withstand rapid acceleration and deceleration without suffering mechanical wear or "thudding" during blade engagement.13:55 The Variprop features a large, robust hub and internal gear mechanism designed to handle these shock loads.15:53 Unlike folding propellers, which remain closed while sailing and prevent energy capture, the feathering design allows the blades to remain open for regeneration.13:04 The unit offers independent pitch adjustment for forward and reverse, which the owners can fine-tune while the boat is in the water to maximize regenerative efficiency.19:10 The project also includes ongoing interior fairing and priming work, with the crew transitioning from high-build to finish primer using 180- to 320-grit sandpaper.0:40
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