ace, your complicating things more than it needs to be, david never mentioned flying with the aircraft trimmed straight and level on the bubble, of course that would give more speed whether the radiator was open or not, his point was that havng the radiator closed did not effect his speed no matter what the attitide of the aircraft.
you have come here looking for an argument, dont you have nothing better to do with your time??
the graph YOU provided is evidence backing up davids theory, you even argued about that though you was proven wrong, you argued about the numbers being the wrong way round, ive read so many of your posts and this is just another of those where you make yourself look an idiot by being wrong and not being man enough to hold your hands up and say "hey, sorry guys, i was wrong here, maybe i dont know everything".
i was going to put you on the ignore list but you provide me with some comedy in a morning

no offense meant of course.