Modular propeller
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The purpose of a modular propeller is to provide more control over a boats performance. The most common modular propeller is comprised of 3 main parts: the center hub with an integrated front cap, a set of replaceable blades, and a rear cap. Assembly of the propeller is completed by sliding the base of the blades into the corresponding slots of the center hub, and then placing the rear cap onto the assembly. A nylock nut, prop nut, and cotter pin of another prop nut will be added to keep the assembly together.
Modular propellers offer boaters several advantages a fixed pitch propeller. The ability to change blades allows boaters to make adjustments in pitch for various performance needs or a change in altitude. Carrying spare blades for this purpose takes up considerably less space then carrying a complete spare propeller. The ability to replace blades also offers the advantage of replacing damaged blades while still on the water, and saves long term repair costs. Other options include adjusting pitch for altitue, watersports, cruising, and quick turnover time.