There appears to be quite a strong diagonal crease across the third panel down. This would indicate that you need the LHP to be exerting some pull backwards, a little higher up. Since the LHP usually goes twice around the mast, I'd try taking it on up to the top batten, or to the yard, and see what effect that has.

It's difficult to say more, without seeing some wind in the sail.

Good, Frederik.

My guess is that the camber is more constant and independent of stretch along the battens when the shelf foot method is used. That is more of an issue with my simple Barrel Cut Method.

Arne

Frederik,

I hope your new toy will not disappoint you. The sailplan, slightly modified from Ingeborg's,  should hopefully give next to neutral helm. Remember, there is room for shifting the sail a bit foreward or aft, until you are happy with it.

One thing I should like you to do, when Orion is up and running, is to measure the actual depth of camber in each panel. I have forgotten what I recommended, and anyway, since Sebastian uses the shelf foot method, the result may be a bit more or less camber than you prescribed. In my Ingeborg the camber initially turned out to be just 7%, but then I eased the tension along the battens 3-4 cm, which resulted in 8% camber, just as I aimed for.

Good luck!
Arne

(Member's album Section 8-9 of photos)

Looking good! I see that the Weathermax 80 sail has been made with the shelf foot method of adding camber - the best. It will be very interesting to see a photo of this sail hoisted and set, alongside a photo of Ingeborg's sail, hoisted and set. It would be more interesting still to see both both boats sailing side by side, if you could get to Stavanger this summer.

I altered Orion's rig a bit, compared to Ingeborg's rig, to move the CE a bit forward. The diagram below shows both rigs plus the Bermudian rig.

Arne

(see Arne's sketches, section 3, diagram 8)