I was flying a Spit IX. (I only fly Spits, Yaks, Zeros, or N1Ks)
I know I was going way more then 300 when I tried to turn. I dunno, maybe it's just something you get better at the more you do. (I am always willing to learn new tricks, if someone is willing to teach.) I can always tell, right away, weither I'm fighting a vet or a new player. Vets kick my arse so hard. About the only time I've personally killed a vet is in a head on pass, but i usually get wounded so badly I can't continue. I been flying offline, flying through hangers (So far only verted, working on trying to do it inverted.), dive bombing bases, and trying to improve. Bases and hangers don't compare to a real pilot. Maybe one day I'll be among the best, but prolly not. Ah well, I can dream.
BTW - Perpendicular means at a 90 degree angle. Not trying to be snooty, just making an observation.