[quote=leeboweffect]Great input and photo arch. Yes, I get it that when off center and sail filled the angle would be less than 90 deg.. Just asking a simple logical (to me) question as folks generally don't change things without reason. All I'm looking for is the reason when 3 other sails I've seen have the clew plate located like sail #1.
I was hoping that someone would offer up a technical piece on boomless sail design theory. I checked what I have on my shelf to no avail.
The Art and Science of Sails - Whidden
Sail Performance : Techniques to Maximize Sail - Marchaj
Your photo is great and provides an example that the over 90 deg. geometry has been done and that's an older pure Skip Elliott (older as in no Pattinson pure green griffin) sail (assuming the adjustable track wasn't added Xworks).
[quote=arch]are you sure that main came from a 5.0?[/quote]
100%[/quote]
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