Sailboat propeller ECO*STAR

auto-featheringshaft drive3-blade

When it was launched over thirty years ago the designers of the Autoprop could not possibly have realised how important their unique design was to become. Thousands of cruising yachtsmen around the world sail faster and motor further and more economically using Autoprops. ​ With this history and its unique abilities it is not surprising that a new version of the Autoprop called the Autoprop Eco*Star has been developed to propel the rapidly growing number of hybrid and purely electrically driven craft, both motor and sail, which are being launched around the world. Its development has been the work of a formidable team of expert naval architects, engineers and scientists from Bruntons, sister company Stone Marine Propulsion, and the world renowned Insean Research institute in Italy who provided invaluable assistance in evaluating and testing the propellers characteristics, mathematical modelling and optimisation. BENEFITS OF THE AUTOPROP ECO*STAR It’s already acknowledged that Autoprops are highly efficient because of their ability to auto pitch depending on engine speed and weather and sea conditions; an ability that provides optimum thrust at all times. But with purely solar or with hybrid power the list of advantages provided by the new Autoprop Eco*Star Propellers is further extended Electric motors, unlike diesels, provide a constant torque from zero to maximum rpm. Only the Autoprop Eco*Star Propeller, using its auto pitching ability, can match its own efficiency curve with that of the electric motor. The result, a considerable improvement in the economy deliveries available compared with other propellers. Put simply, more boat speed but using much less energy.