Sailboat propellers have two requirements. First, provide maneuvering power forward and reverse while not under sail power.Second, have minimal drag while under sail.To achieve these requirements sailboat...
Propeller calculations and clearance Because of the complexity of the calculations, propeller calculations are good estimates and refinements to the prop parameters are sometimes needed during sea trials....
To correctly size a propeller for a sailboat, the boat, motor and how you use the boat must be considered.Motor considerations The horsepower, rpm, and gear ratio of the motor are used to calculate the...
Prop identification. Most manufacturers mark the propeller with prop diameter, pitch and shaft diameter. Often the letter R or L for right or left hand will appear in the marking. A prop marked 12r7x1 would be...
