J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Are J29 and J30 main sails compatible

J/30 P = 38' (distance between bands at top of mast and goose neck)
J/29 Masthead P = 38.8'
J/29 Fractional P = 35'

J/30 E = 13' (distance between bands on the boom)
J/29 Masthead E = 12'
J/29 Fractional E = 13'

Masthead luff will be too long, foot too short. Fractional luff will be too short though the foot is just right