Mark Channels Read Calendar. Opt Engine Transom Height. Posts Latest Activity. Page of 1.
Click on each list item to find out more information about it. Paul Allison discovered the advantages of cupping a propeller by accident. This small curl on the trailing edge of the propeller blades reduces cavitation and slippage, thus increasing speed and efficiency. Paul realized: tilt the engine down, the boat turns better. Tilt it up, the boat is faster. A jack-screw protruding thru the transom changed the angle of the engine by turning a wheel at the driver's seat.
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