All wings roughly same lift? No, bigger and thicker wings give you more lift, just like bigger (and thicker) kite does. Variable is the board speed, big wing can lift you up in slow speed, small wing needs more speed of course.tkaraszewski wrote: ↑Wed Dec 18, 2019 5:20 pmThis article has the most info I've seen in a published format about the hydrodynamics of a racing foil: http://www.tspeer.com/Aclass/A-ClassCatamaranFoils.pdf
It's focused on A-class catamarans but the concepts are the same.
One thing about "high" vs "low" lift wings for a kite hydrofoil is that this is a misnomer. All wings produce roughly the same lift. If they produce more than that, they lift you out of the water. If they produce less than that, then you can't stay on foil. The question isn't about the amount of lift a foil can produce, but about the other parameters that need to be true when the correct amount of lift is generated (speed, AOA, amount of drag). Race foils are generally intended to produce the most speed with the least drag. Surf foils are intended to produce the required lift at low speeds, with less concern about drag at higher speeds.
Can you share a picture or 2 of your creation?airsail wrote: ↑Wed Dec 18, 2019 12:15 pmJust finished and ridden my latest wing. Initial was 1.2” thick, (30 mm) about 1100 sqcm. This one is .66” thick but 1200 sqcm.
The thick wing has a roughness about it, I think caused by buffeting of the rear stab by the thick wing. The new wing is smooth and silent, gained about 4 knots in top speed, about 22 knots and crazy low speed.
In my experience a thin, large area wing is preferable to a thick slow wing. It provides enough speed to link swell sections and not boring to ride when covering distances.
jumptheshark wrote: ↑Wed Dec 18, 2019 4:06 pmPlummet,
Your a confessed speedster. Everything I've read points to the logic that thin profiles preserve more top end speed where thicker profiles provide more lift at lower speeds. For kiting, especially your style and conditions, I would think it makes sense to stick to a relatively thin profile. Thick profiles might be great for the people pioneering the Peak 4 style of kitefoiling, where the goal is to have as much time on the wave with no drive from the kite. Similar to wing foiling.
Thin profile seems like a much better fit for people in big waves with high swell speed, and those on the other end in piddly little wind driven swell that in open water are short lived and cannot provide much in the line of long unsupported rides.
I've made peace with the fact that I'll always want the kite to be actively involved in my foiling. I have to be able to shut it off, but not for very long. I would imagine you are in the same boat for very different reasons. Boat speed is important to both of us. This style of riding is likely a lot less suited to the thicker types of SUP and Surf specific wings.
I see a clip like this and wonder if those on Peak 4 identify in the same way. I also wonder if its even possible to rip around at that pace with a thicker profile wing.
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