J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment 3 blade max prop setting? degree / pitch

The correct pitch and diameter of a prop is that which allows it to reach redline but not exceed it. This varies with prop configuration, condition of the bottom,and load in boat. Fully loaded for 3 weeks cruising will cost 200 to 300 RPM. Don't run against the throttle stop but run just below max RPM.