Driven by a commitment to American innovation, Greg brought his groundbreaking invention back to his hometown of Detroit, MI, to manufacture the Sharrow Propeller in America. This journey of innovation, driven by Greg’s relentless pursuit of perfection, has now set new standards in propeller design and performance, all while proudly being made in the USA.
Dramatic Reduction In Cavitation From Tip Vortices
Sharrow Engineering funded the development of an enhanced 12-stream dye injection visualization system with high-speed 750 fps camera at the University of Michigan’s Marine Hydrodynamics Laboratory.
As the video shows, the larger volume of the captured stream of the Sharrow Propeller™ and greater downstream mixing. Note in the photo the outer orange streamline that is ingested into the Sharrow Propeller™ passes beyond the tip of the standard propeller. The standard propeller produces a concentrated tip vortex while the Sharrow Propeller™ has no tip vortex; the tip vortex is an induced loss and a source of cavitation.
True Advance™ is a design feature within all Sharrow Propellers™ that contributes to the incredible efficiency and performance of the Sharrow Propeller™. It allows our propellers to achieve their maximum advance rate and efficiency much earlier on in the RPM and speed range of a boat compared to standard propellers. The benefits of Sharrow True Advance™ include:
Unmatched Efficiency
Greater Range
Superior Fuel Economy
Increased Load Capacities
Faster Speeds (up to 10 MPH FASTER) at Cruising RPM’s
Enhanced Handling and Maneuvering
Up to 50% More Reverse Thrust for Greater Stopping Power
Lower Emissions / Reduced Carbon Footprint
Quieter Operation
Less Driver and Passenger Fatigue
Longer Engine Life
Can be Utilized on Virtually any Propeller Driven Craft
Each Sharrow Propeller can be Custom Tuned to Each Specific Application
An analysis of a boat’s performance data reveals that the actual traditional propeller “slip” is significantly more than expected at cruising speeds, while the Sharrow propeller achieves dramatically higher efficiency percentages much earlier on the boat’s total operating range.
Sharrow’s True Advance™ Delivers 97+% of maximum efficiency as soon as the boat reaches planing speed
In this example, the conventional propellers don’t reach 97% of maximum efficiency until nearly full speed.
