J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment prop recommendations and gear ratio for yanmar?

Tom - The stock prop on my J/109 is a 2 blade Flexofold. This is the installation sheet that has some good pictures. Performance on the J/109 is very good ahead and astern. Becuase it is geared, you don't need to position the shaft as you do with the Martec folding prop to align the blades side by side for optimal feathering.

Installing anything other than the Martec on a J/30 is not in accordance with class rules for OD racing.