Actually, my guess is that the diagonal battens will help with the
leeward edge of the mast/sail -- the more forward force put on the
luff by the battens, the more it's going to want to push forward on
that leeward edge, until it gets stopped by the lashings from moving
any farther forward, which will then be flattening it against the
leeward mast surface.
This could create a pretty tight/flat trailing edge, with a
smaller gap even than some sails on tracks. Or not. We'll see.
As for a mast shaped to help the process, I'd probably abandon
that and stick with a round section, partially for ease of
construction and stress analysis, and partially so the boat won't
want to sail under bare poles.
- Mike
Correct. The lashing goes through an eyelet just below the batten. Even the diagonal batten seems to stay against the mast, although it has not had big loads yet so may need a simple fitting to keep it in place.
On Mon, Apr 17, 2017 at 12:10 AM, ru-eno@online.no [harryproa] <harryproa@yahoogroups.com.au> wrote:
Good work, Rob!
That sounds to me like a very simple and quite efficient way of attaching the sail to the mast.
But if you have a square-top sail, i suppose you will need battens as well. How do you attach them?
As they will be pressing forward onto the mast, I suppose they would tend to slip past the mast on the side if held with the same lashing.
Regards,
Rune
Posted by: Mike Crawford <mcrawf@nuomo.com>
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