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Transmission of power by converting rotational motion into thrust. Dynamics are created by the spinning of three or more blades contained in a boat propeller. The blades spin to create a pressure difference between the forward and rear surfaces. In boat performance optimization correct propeller selection is vital. The engine manages to apply its maximum horsepower to the water when there is selection of correct size and style of boat prop. Selection of props should be directly proportional to the size of the engine and boats.
Propeller size selected should let your engine operate at its correct rpm range. Diameter and pitch should be adjusted to maintain the rpms in the proper range when the number of blades changes. The material for propellers should be composite aluminum and stainless steel. Durability, good performance, and affordability are advantages of composite boat props. Aluminum props are commonly used because they exist in many models and styles. Stainless steel props offer the best durability and highest performance. To achieve efficient fuel consumption, cupped boat propellers should be used. The main goal in selection is to choose one that allows the engine to reach its maximum WOT.
If the performance of your current prop is good always choose a replacement prop that has a similar diameter. When upgrading you should consider a four blade prop rather than a three blade. Pitch and rpms are inversely related; fewer RPMs less pitch and vice versa. Since tournament boats are known to need high speed they should use props with high pitch. Lower pitch power props are recommended for houseboats and cruisers since they focus on efficiency at displacement speeds. Make use of different boat propellers for different applications. Optimization of the power of your engine can be achieved by using two props.
The latest model in boat propellers is the modular propeller. Many engine manufacturers are considering modular boat propellers. Money can be saved when using modular props since there is no need to purchase a second prop. It is advisable to always carry an extra propeller to be used if a need arises. In case of a props strike or spin out a hub an extra propeller will save your time. Changing a damaged prop by yourself can be dangerous and hence you are advised to look for assistance in such situations. Once you suspect that your boat is underperforming have it checked by professionals. Any attempt by you to replace a broken propeller may be fatal. Your boat and the propeller chosen must fit perfectly. A smooth run and no vibrations can be achieved by ensuring your propeller is properly balanced.