Bill: Thanks for the input.
We have a curved jib-track on our Tornado, but it is bent to the wrong shape (not enough curve). As a consequense, the jib-car tends to move towards the center when the gusts lets up. We need to be aware of this, and sheet out the jib, or else the jib chokes the main quite badly. Perhaps we will add a fourth batten to an old jib and se what happens (always fun to try something new, and learn something in the progress).

Regarding automatic trim response. Automatic depowering and a rig that responds to changes in windspeed is great if it is easy to manage. Just consider our flexible masts with pre-bend and square top sails (altough the new Tornado mast is rumored to be very stiff, not very responsive to downhaul and yet beeing very fast, exciting times).

I had the opportunity to look at Darren Bundocks T in 2003. His jib-track setup was simplistic and very 'set and forget' It was a standard curved track, with one adjustable stopper at each end. Hi simply set the stopper where he wanted it (30cm from center in low winds and 40cm in high winds I think, at least that was where he had marked the track) and the jib-car moved between the stoppers. No adjustment made when racing..


I dont want to get into the other part this thread has turned into. Just want to add that here in Norway, several cruiser models are fitted with selftackers, both from factory and afterwards.