Tim.Wright wrote:The first picture is anti ackerman. The second is pro ackerman.
There is loads of information on this if you both to look.
BTW, anti ackerman seems to be pretty common in F1 at Monaco. I don't know the particulars as to why, but its usually a tyre driven design choice.
It’s just a theory, but I suspect that in the low speed longer Monaco corner(s), i.e. sans aero down force, the cars tend to wallow a bit in under steer. The problem appears to be in getting the car to rotate rather than lack of centripetal force. With fairly extreme anti Ackerman, the inner tire will drag a bit to create a force couple that helps rotation. This assumes that the outer tire pretty much defines the turning arc, but, with a low CoG, the weight transfer is a question.
As with Ackerman in general, they can get away with gobs at low speed, tight corners since steering inputs will be much less during high speed work.