In Carl's excellent tuning article, he calls for a 10% longer attachment point for the jib than the main. This is to open the slot angle as the sails are let out. I have checked this against Rick's site and the Class drawing, and have each of them is different. There is a slight amount of guesswork involved as attach points measurements of the main is not a dirrect measurement, but....
Build site: jib 14, main 16.
Drawing: jib 13.5 main 13.25 to 13.50 depending upon where you measure.
What are ya'll's thoughts on this? What numbers do you use?
Thanks,
Michael Edwards - EC-12 1969