I am having a little trouble interpreting the Hucho drawing too? I think that the very bottom drawing means the two sides and the bottom are tapered in 10 degrees, and the top is at 25 degrees. The second drawing from the bottom may just have strait sides? Aerohead needs to interpret this drawing for us. As I understand it, curved sides are best, but when using flat panels these angles are required to approximate what curved panels would do.
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