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Twin wiring downwind

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dohertpk View Drop Down
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    Posted: 01 Aug 16 at 11:24am
Quick question, why don't crews twin wire downwind on cats? 
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Rupert View Drop Down
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Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 01 Aug 16 at 5:11pm
Angles too high? Wild thing quicker?
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craiggo View Drop Down
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Post Options Post Options   Quote craiggo Quote  Post ReplyReply Direct Link To This Post Posted: 01 Aug 16 at 11:42pm
It's all to do with the drag curve for a given hull shape and the power available from the rig.
For any combination there is a sweet spot in terms of angle that gives best vmg.

On many catamarans due to the canoe body low drag with one hull immersed, the best angles are achieved when you can just keep the windward hull clear of the water. The actual angle at which best vmg is achieved is at a lower power angle than if you had both crew on the wire.
Certain classes (A-class) have now developed to a point where most new designs now operate at a better VMG with the helm on the wire rather than wild-thinging.
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H4marine View Drop Down
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Post Options Post Options   Quote H4marine Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 16 at 5:15pm
We had better downwind vmg soaking it low with flattish boat than boats getting a hull out, when breeze increases it's more about getting weight right back off the corner so more about hanging off the back than the side. Or that's how it feels to me.
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