That means millions of dollars in tooling owned by the engine and prop makers of the world might have to be written off as a loss on their books. The naysayers will undoubtedly hit the boating forums almost immediately, so let us just say when we first heard about the prop, we were highly dubious.īut our testing and our investigation into the prop’s development has convinced us that there is a new prop design that not only excelled in our tests but may well make many non-loop propellers obsolete. The BOATTEST review shows that the Sharrow shows huge potential in the recreational boating market benchmarked against two industry standard s/steel props with a 150hp outboard: Patents are still pending in many countries Sharrow’s propeller product provides a wider peak efficiency curve for greater utility over a wide scope of operational ranges, and a 17 percent reduction in torque while accelerating. Suitable for Marine Applications Such as: The Sharrow Propeller can be manufactured to meet a comparable price point to standard propellers. Industry experts have traditionally evaluated gains of 1 percent efficiency as meaningful. Results from this comprehensive research program demonstrate that the Sharrow Propeller 9-15 percent more efficient than the industry standard Wageningen B-series design. Over the past six years, Sharrow Engineering has analyzed extensive testing data collected at the University of Michigan’s Marine Hydrodynamics Laboratory and implemented a rigorous in-water test program using manned vessels in lakes, rivers, and bays. It's been almost 200 years since the first bronze screw prop and 200 years of research and development to improve efficiency and overcome challenges like cavitation.Īny new technology can take years to reach the market. The post was an update on new technology - not suggesting anyone go and buy one yet but rather a radical new prop design, still being developed can make a significant difference to boating and shipping. For most of us we can hardly justify a new G2 on how fast it pays for itself in fuel savings. I'm surprised at all the negative comments.Īn 18% fuel saving is enough for some to justify buying new outboards.
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