Paul Thompson wrote:
Arne, the angle of the yard is directly related to sail balance. The more balance you have, the lower the yard angle must be and vice versa. If you don't follow this rule, you will have problems getting the sail to set well. I learnt this the hard way with Aphrodite.
Paul, yes, I agree with you on that. Maybe I one day start designing another set of master sails, this time with a yard angle low enough to work with anything between 15 and 25% balance. I have found the range of Johanna style master sails (70deg yard) to speed up the process of sail design so much that I don't like to start from scratch any more.
Arne
PS: To make a Johanna-style sail with 70deg yard set well with maximum balance (15-18%), I recommend fitting a tall enough mast to let one attach the halyard as much as 5 - 7% aft of the middle, and still with a decent drift.