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Cornering Speed --- Constant Radius Turns

The maximum combined cornering force that can be generated by the tyres is , equating this to the centripetal force shows that the maximum cornering speed is

We can drive around large radius corners more quickly (Tipler, p. 114).

Figure 9: Three possible routes around a corner connected by two long straights. Although route A is shorter, the cornering speed is slower. Route C has largest radius and is fastest.

Figure 9 shows three possible lines around a corner. Consider the time taken to complete the curved parts of routes A and B.

Although she takes the longer route, it takes driver B only a factor longer to cover the curved part. Further more, she needs to brake less before the corner, and will start travelling down the straight with a larger initial speed.

Richard Bower
Thursday October 8 16:09:30 BST 1998