Even I know the answer to that one. They are really nose heavy because gyroscopic effect will try to lift the nose of a speed plane.
When I was talking about free flight sections. I was NOT talking about highly cambered sections, even I am not that dense. I was thinking more like a flatish bottom and the normal speed section on top. I have done the brick on the string calculation and realised you don't need much lift at speed! I was thinking that it might just give you the odd mph advantage with the right section. Looking at some of the FAI results, that could easily a mean a place or so difference.
I appreciate that the major tricks have been learnt by now, so to go faster will need more HP and just any minor tweak that can be done. My query was really based at the latter aspect, I.E. the small tweaks.
Has anyone actually done any experiments with wing sections? The ones used now, appear to be little different from those of the 1950s, seems strange that the old practitioners got it right first time.
Agreed, as shown here mate.http://www.supercoolprops.com/articles/gyroscope.php