J/30 Class Association Forums J/30 Forum Racing Tools and Techniques Headstay Sag

We have had North for several years now-and the main is quite different from other sailmakers (Ullman and Quantum) that I have used in the past. As wind decreases, rig wants to be uppers tighter than lowers-I go around 1000 uppers 750 lowers for the light stuff. This puts more prebend in the rig. Sets up really nicely, with a deep, smooth draft. For heavy air, uppers and lowers the same, around 41-42 on the loos.

Long story, but we switched from UK to North more or about the same time as our longtime sailmaker. To my eye, North main has more curve in the luff and a shorter leech. It appears to require more pre-bend than the UK main, but we are trying to stick to the tuning guide, which is generally softer than we were used to. Genoa maybe a bit less luff curve so tighter headstay. Clew is significantly higher, so the sheet lead is 6-8" forward compared to UK. Still using the UK kite.