Re: Slot the error (or maybe I'm wrong?)
On any of the NASA American Iron Cars I've worked on, they usually run the slots outward...starting in the center and working to clear the pad material from the rotor face. On cars that the slots run like that picture, I have seen pad material build up (under extreme use) and cause issues with brake performance. The cooling vanes should be drawing air out from the center of the rotor and that is the most important aspect (My friend reversed his front rotors at road atlanta once...he was in a hurry, and he wound up in the wall after the brakes failed...he was ok and the car is now fixed, but it was a hard lesson). So, I would never reverse the cooling vanes to make the slots sweep "outward", it is a bad idea. It looks like I'll be at the NASA evend on Feb 23rd at Virginia International Raceway (unless something changes), to crew cheif for my friends American Iron Extreme team, if anyone is going to be there, drop me a line and maybe I can put a face with some of the names around here....
Kevin.