Laser 28 - Excellent example of this great design Hamble le rice |
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Laser 140101 Tynemouth |
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Laser 161752 Tynemouth |
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Sam.Spoons ![]() Really should get out more ![]() Joined: 07 Mar 12 Location: Manchester UK Online Status: Offline Posts: 3401 |
![]() ![]() ![]() ![]() Posted: 05 Mar 17 at 11:38am |
Presumably the wings will be max width (no point in them being narrower) so being upswept must increase the righting moment as the boat heels to windward to the point when the wing is horizontal?
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iGRF ![]() Really should get out more ![]() ![]() Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Nope I still make the argument that if you follow the logic,
1) They are closer to the centre line. 2)They permit the rig to be hauled further to windward without dipping in the water thus reducing the sail area presented to side forces and generating more upward lift vector without over cooking the righting moment and going in to weather. That means less righting moment, but more versatility with the righting moment available. I reckon. Or.. sudden thought they are actually wider, but being curved upward remain within whatever measurement defines how wide they can be, then they do all that stuff I said up there anyway. But they certainly look kewell and I hope it blasts to the front of the fleet. Edited by iGRF - 05 Mar 17 at 11:52am |
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Sam.Spoons ![]() Really should get out more ![]() Joined: 07 Mar 12 Location: Manchester UK Online Status: Offline Posts: 3401 |
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As long as the wing to wing measurement is no more than 2250mm they are legal, the more they angle upwards (the curve may be ergonomic but makes no difference to max leverage) the longer that can be (from hull to tip) without exceeding the max width measurement. Leverage increases until the windward wing is horizontal. That is compounded by the fact that the roll centre of the boat is a couple of feet below the hull when foiling so the righting actual moment is the horizontal distance between the RC and the end of the wing.
And, yes, it does look very jewell
Edited by Sam.Spoons - 05 Mar 17 at 12:37pm |
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Sam.Spoons ![]() Really should get out more ![]() Joined: 07 Mar 12 Location: Manchester UK Online Status: Offline Posts: 3401 |
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Another thought, are they curved so you don't just slide off them when the boat is sailing nearer to upright?
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423zero ![]() Really should get out more ![]() Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 3420 |
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they may be really springy, when sat on they could flatten out ?????
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Rupert ![]() Really should get out more ![]() Joined: 11 Aug 04 Location: Whitefriars sc Online Status: Offline Posts: 8956 |
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Would be a novel approach, one I'd love to see in action, as they go to sit out the wing spits them backwards into the water. |
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Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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Sam.Spoons ![]() Really should get out more ![]() Joined: 07 Mar 12 Location: Manchester UK Online Status: Offline Posts: 3401 |
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Or tosses them over the rig (I wondered why they call them trampolines) :)
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423zero ![]() Really should get out more ![]() Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 3420 |
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would be interesting to see what would happen in waves un-damped spring
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Sam.Spoons ![]() Really should get out more ![]() Joined: 07 Mar 12 Location: Manchester UK Online Status: Offline Posts: 3401 |
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From what I've seen on youtube foiling Moths bob all the time until the pilot becomes pretty skilful
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RS400atC ![]() Really should get out more ![]() Joined: 04 Dec 08 Online Status: Offline Posts: 3011 |
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I'm still struggling with why the leeward wing presenting itself as a damn great near-vertical surface in the airflow isn't a very bad idea?
Or is it working as a sail? Anyone? |
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