Mark Thomasson wrote:

Dear Bertrand,

thanks for the link http://maheyo.free.fr/spip.php?article71

So there is no articulation in the current iteration.  Does that make it basically a Gallant rig?

Do you keep the cloth tight, or does it bellow at all?  I was thinking if the latter it would give some asymetrical shape, useful when close hauled. 

Kind regards

Mark

Dear Mark

The difference with the Gallant rig is there are sheets on each wishbone as with a classical junk rig. But the big difference is that the double sail of the Gallant rig is not built  in one panel (there is no junction between the panels on the nose of the wing sail). At my eyes it's very important because it's around and just after the nose that the pressure around the sail is at its minimum level so if there is a longitudinal slot along the nose of the wing sail,  the relative high pressure inside the wing sail  run throw this slot and destroy this very low pressure area.

To get a good shape to close the wind I tension  the front of the sail but not too much to don't damage the sail and when abeam until down wind, I released the tension because the twist of the haylard  around the mast increase the tension. It's not important to have a vertical curve between the wishbones . I even think its better to break the symmetry of the wishbone profile and so to increase the sail force.

Its completely different from with the articulated wishbones. The tension on the sheet is very low and if i tension too much the sheets ( increasing the angle of attack) the speed decrease. With a sudden heavy gust I only release the sheets.

We are going to leave the pontoon soon to anchor in the bay to wait quietly the return of the north wind and I don't know if we could always get an internet connexion.
We expect to sail away next Thursday morning).

Kind regards

Bertrand