To install the Autoprop onto Nandji, we have to make a few modifications to the sweep area of the prop. As the new Autoprop has a little larger blades than our previous fixed bladed prop, it also is a feathering prop requiring a larger sweep area as the blades rotate 180 degrees giving the vessel the same power going astern as forwards propulsion. When under sail, the self pitching blades pitch to a degree where up to 85% of drag is reduced allowing the boat a much higher speed under sail! Stop it you say, well I agree my friend...
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