You suggested a 13″ diameter x 14″ pitch propeller for my boat. Would a smaller diameter propeller with more pitch provide the same performance?
A propeller with smaller diameter and larger pitch might provide the same load on the boat’s engines but may not have the same efficiency as the suggested propeller. Propeller diameter is chosen to be optimal for the boat’s particular combination of horsepower, RPM and speed. Deviating significantly from the best diameter may result in slower acceleration, reduced cruise speeds and efficiencies, and more difficulty in slow speed maneuvering.
Related Questions
- To change from a standard 3-blade, what diameter or pitch modifications must be made for a 4-blade propeller ( to retain comparable engine operation relative to rpm)?
- To change from a 3-blade propeller to a 4 blade propeller, what diameter or pitch modifications must be made to result in the same engine performance?
- Does anyone ever specify a maximum pitch that is larger or smaller than the maximum diameter of the wire being spooled?
