I’m doing 11kph - 37kph on my wing at no more then 70% throttle. Which is what in the post above I described as a good all around wing.
Your wing is in the same category as what I’m describing. Roughly the same speed range.
The OP is asking about wings that do 50kph. There is a big difference in wings, and handling, and limitations when you go to a wing that can do over 40kph.
Now go to a wing that does 40kph - 50kph and you will see the trade offs of the go fast race wing I described in my last post.
Nothing wrong with a race board if all you’re looking for is going fast in a straight line. Speed comes at a price. It’s a trade off. That’s all I was trying to say.
The wing I’m using is different from the wing @Jezza is using, which is different from the wing Lift is using. But all 3 of these wings fall into the good all around wing category in my opinion.
At the moment I think a wing that has a speed range of 10kph - 40kph is about the limit. It’s this type of wing I’m most interested in. Thin for low drag, high aspect ratio, and turned down wingtips to shift lift back at high speeds. (Of course this is a generalized statement. Total weight, amount of thrust, wind speed, fresh vs salt water…lot of factors! )