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Originally posted by iiitick Equally daft idea.....Boat sailing downwind displacement sailing and pushing all that water aside wasting energy to do it. How about storing some of that energy (say a tube with a turbine in it passing through the boat), then farting it back out again at moments of tension like approaching a windless mark or a race to the line. Energy stored by inflating bags.  Anybody else as bored as me?

I do think your tube idea is the best one that's come to light on this thread.

Equally daft idea.....Boat sailing downwind displacement sailing and pushing all that water aside wasting energy to do it. How about storing some of that energy (say a tube with a turbine in it passing through the boat), then farting it back out again at moments of tension like approaching a windless mark or a race to the line. Energy stored by inflating bags. 

Where is the problem powering up after a gybe? The boat is moving forward, it gybes, you sheet in and 'catch' the wind on the new tack. If it is windy you let the sail flap then sheet in when you feel safe. The trick is to get power immediately by controlling things. Like I don't. How is hauling yards of mainsheet in to pull the boom back from in front of the boat better or safer?

Are you talking about the foiling V Twin? Why would that go on the bonfire? With it's revolutionary new invention of the inflatable mast head foil that will prevent it turning turtle and boost the power off the sail in the same way end plate effect helps the foot.

As to the hideously expensive EPS and it's gybing properties, I already get wet on windy lee running into fast gybes, precisely because of the flow reversal that has to occur. The difference will be that by the time the sail is on the new tack, so will the boat be, as against what can happen at the moment if the wind, apparent or direction change, happen as you gybe and the new heading is all wrong for the freshly crashed sail, it's over you go. The way I'm proposing the take up on the new tack, like windsurfing, is progressive, it's exactly for windy conditions I need to do something else, gybing 9.4 sq mtrs with only 67 kgs to counter that crash gybe is very very difficult.

I've spent many an hour postulating as to why boats are faster running by the lee and why they rock about so much, indeed I had a couple of hours to consider it running dead downwind running the Icon jib by the lee to enforce the thinking, so I do know what goes wrong and why.

Edited by iGRF - 29 Oct 14 at 9:27am

The big problem will come when the mast rotates forward and you begin to sheet on again after the windsurf style gybe. Now, in a windsurfer the mast cants around and the board stays relatively flat, the heeling moment of the sail isn't transferred to the board in the same way, not to the same degree anyway. If you have ever sailed a laser and let your mainsheet go right out and sailed heavily by the lee you will know it is a lot of fun but incredibly wobbly. I think this is where you will come unstuck, not the making it work bit, that's easy, people gybe A sails round the front all the time when its windy in big boats, two sheets is the answer there. Big boats are already doing outside gybes, so really this is nothing new.