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Author Topic: Wing handling after gusts and in lowwind  (Read 414 times)

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totowing

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Re: Wing handling after gusts and in lowwind
« on: June 18, 2020, 11:34:06 am »
Dear Dommo,

thanks so much for understanding my question  ;) and of course your replay. Let me get staight to your answers and hopefully more "Experts" jump in... as it is a new sport I think we are all experts even having less then a year experience.

to 1)
Oversheeting, as a sail teacher most students always struggle with the right angle and easing the sail to gain more speed. The sence that the tighter you pull the faster you go is not always correct, it depends on your course relative to the wind. With the wing beeing quite rigit I think it is easy to oversheet, so that you are feeling power but it is not automaticaly proper propulsion... I was thinking of adding some telltales to the wing and see if it helps to get the right angle:

 
Pic:
Fist situation is oversheeted, second wing to open, thrid is correct windflow.
As for the location on the wing, I would put it on the the window so you can see what both sides are doing. The idea is to find out if what you feel also coresponds to the way the telltales react so when it feels right telltales should fly parallel.

to 2)
I agree that having the middle strut parrallel to the water is the best way to hold the wing as the main pull is forward in your traveling direction. Other angles of the middle strutt to the water will only give you a % of the forward pull.

to 3)
After a gust: I agree pumping both is best...if done in good coordination... then pumping either wing or board depends on situation: maybe if you have high speed then it is good to use that aparent wind with the wing while if you are already going a bit slow it would be better to concentrate on pumping with the foil. I also agree that the drag from carrying the wing behind you while pumping the foil would be the worst option.

to 4)
Here I completly disagree with you. So conditions are that you are on the foil (reach, 90° to the wind ) and the wind drops to lets say 5 knots. Bearing downwind will decrease your aparent wind to a point that you travel same speed or faster then the wind... so  you will feel no power at all in the wing and can´t use it for pumping. With a Laser (sailboat) for example you do the opposit, when the wind goes down you head slowly upwind to increase the aparent wind and keep your speed while with a gust you bear downwind using the extra wind to accelerate.
In theory it should be the same with the wing...that you gradualy point upwind up to 45° trying to keep your speed.
Anyhow it would be intresting to see what other people think especially about the last point.


 

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