vChoosing a Propeller To choose a propeller we need to know the following vHub of propeller vBlades (Twisted fins protruding from the hub) vBlade Root and Blade Tip vBlade Face and Back vLeading and Trailing Edges vRight Handed vs Left Handed vDiameter vRotations Per Minute Pitch Our Main Propeller types and size 3 Blade Propeller A 3 blade propeller has the following characteristics : The manufacturing cost is lower than other types. Gives a good high speed performance The acceleration is better than other types. Low speed handling is not much efficient. 4 Blade Propeller A 4 blade propeller has the following characteristics : Manufacturing cost is higher than 3 blade propellers. Have better strength and durability Gives a good low speed handling and performance Has a better holding power in rough seas 4 blade propeller provides a better fuel economy than all the other types.
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