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Reply to: Do foilers heel?

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[quote=Andinista][quote=ropewalker]I was wondering if the lift could be increased on the leeward side to increase the righting moment. The S9 seems to have this capability.[/quote]
In a stationary situation, the total vertical force on the leeward hull is 0, that’s why the boat doesn’t fly or sink, except for the range of motion that allows the foil. So when that hull is stable vertically, no effect on the heeling moment.

What is different, I guess, is on the dynamic part, on a puff for instance. Both hulls will tend to lift and now the leeward hull can actually lift. At that period of time the axis of rotation is no longer the leeward hull but the center of gravity of the boat, and therefore there is a different effect on heeling. But when the puff is over and conditions are stable again there’s no permanent effect. I think that may explain why “it takes longer”, as said above. 
Of course things are more dynamic than stationary, so the final effect is probably different all the time in practice.
That’s my academic analysis (or guess). Wish I had that practice... not happening in the near future unfortunately..<em>Edited by Andinista on May 10, 2019 - 07:49 AM.</em> [/quote]

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