Hi,
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I had the nice chance to test the flat r wing with vert fin and then the tips angled up right after, no doubt the latter is better .
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I firmly think that f wings need at least some anhedral, either wing tips angled down or curved down.
Also seems that the foil r wing just flys better if it is opposite of the front including the profile.
I will agreee with H in that I fly 0° a o a front and back but I let a super experienced guy tune my foil and it flies better now with about 1.5° negitive r wing A O A.
I have made F wings that are almost flat on the bottom and r wings that are almost flat on the top.
This will work for learning and slower speeds for sure and much easyer to make.
A very basic curved f AND r wing male mold for carbon and,or f glass layups with , or without vac sac.
The curve measures 5cm vert, at the center, for 50 cm wide ,horizontal.
I have made on of my favorite Low A R wings on this.
And note that the front wing is mounted as seen curve down BUT the r wing is mounted 180° to have curve up.
Then after plan form has been cut out, one could add uni to get profile and fine tune with micoballon epoxy.
R H