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The last three are interesting to me. The .08 is the shape we should be going for with our motorcycles and shows how good a short fineness airfoil can still be with the right curvature.
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The last two show what I have been trying to point out in the other threads about truncation. With a super long airfoil, by the time you truncate 30%, you have chopped off most of the part that is tapered. You are left with nearly straight sides already. And poor numbers. These long airfoil shapes do not satisfy the rule of thumb where the width at the truncation must be less than half the maximum width. The results of truncating a super long airfoil are clearly not representative of what can be expected for "all' airfoils. As shown by the second to last shape. If truncation is planned, the shape must be designed with a shorter fineness to retain an 11% slope leading up to the truncation.
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