To further improve the sail shape we may consider a non tapered softer top batten as well as an increase in the bolt rope tension to allow draft to move aft aloft. Seen in 6 kts. Note headstay sag created by 0 backstay. 3DL mainsail in 17 kts. These characteristics generate the ideal combination of wide groove and good driving force without excessive heel or helm.
Settings are maximum backstay some checkstay.
Many thanks to the owners who made the Long Beach Aug 99 J-120 test a reality. Also the efforts of the West Coast NS team were crucial, without their enthusiastic efforts we would not have this report. J-120 Tuning from CC Rider, taken after winning 1999 North American Championships. Genoa Halyard hoisted maximally, Meas. If your sails are different, or you sail in an unusual area, this set-up may not be optimum for you.