Actually since we're presumably quoting the maximum camber (or is that not what a camber percentage means ?) doesn't it depend entirely on the thickness at the max camber point ? In the specific case we were asked about i.e. a single surface wing (thickness approximates zero) it will be half unless I completely misunderstand camber (not impossible ).

I do agree that it's worth trying to educate people to use the correct terminology but not at the expense of turning their fairly straightforward question into a complex generalisation instead of answering it. Certainly it would/has put me off asking anything now I feel that the "answers" I get are more likely to explain why my question is wrong rather than tell me what will happen.

I guess I'm just not suited to this forum.

Steve