What is line picking that can run through the corner at the fastest speed?

byTim Carey

In order to control the race of motor sports, both "straight" and "corner" are required to run through faster than anyone else. So, what type of line do you think you can quickly run through the corner, YouTube'sChain Bear F1When you see the movie released on the channel, you will notice a part of it.

Racing Lines explained - YouTube


In general, the corner that the car is easy to speed out is loose (the curve radius is large), and the tight corner (the curved radius is small) can not give much speed.


Suppose you have a car that runs at 40 miles per hour. Lightly turn the steering wheel to the right to draw a circular orbit at the point where the balance between the force to move forward and the road surface holding power in the side direction is maintained.


However, when the car accelerates to 50 mph (about 80 km / h), the force to move forward becomes stronger, the orbit will bulge out and draw a larger trajectory than the previous circle.


Likewise, increasing the speed will cause the radius of the circle to bulge rapidly. This can be rephrased to the form of "At the beginning of the curve, the greater the radius of curvature, the higher the speed."


The basics of the line passing through the corner at the fastest speed is "out in and out", it approaches the corner without dropping the speed as much as possible, passes through the vertex inside the corner and leaves the course as it is. The vertex inside the corner is called "Apex" using the English word meaning "apex" "tip" as it is.


This apex is called "True Apex (true apex)" or "Geometric apex (geometric apex)".


From the reason that it comes out repeatedly "The curve radius increases, the speed can be increased", it is supposed to be the line shown purple in the fastest way in this corner. However, in the race such as F1, the purpose is not to "run through one corner at the fastest speed" but "to run through the entire course at the fastest speed". In the figure below, we have to think about how to run fastest to C in the straight line passing through the corner rather than aiming at the fastest corner from A to B. In order to run a straight line as fast as possible, it is necessary to accelerate at an early stage.


The idea is "late apex" which shifts the apex on the race backwards, slowing down the brakes at the corner entry.


In Late Apex you can put the position to accelerate early.


On the other hand, the speed of the rise from the corner is not all. There is also "Early Apex" which pierces quickly at a shallow angle to the corner. Late apex for stepping on accelerator quickly is effective if you can accelerate quickly, but if acceleration is not so much, early apex is effective because it is faster in total to fall through the corner without dropping the gear .


In the case up to this point the corner was a straight line, but the corner may be continuous. In that case, how fast it is at the exit (the position of the arrow) of the first corner is not very relevant ... ...


You will think about how quickly you will get up in the last corner.


In this complex corner, it is the fastest way to combine multiple methods.


In addition, in the case of a cart where the grip is not so strong and it can slide sideways, it is sometimes faster that the line ignoring the apex is called "curling line".


Since the F1 machine usually runs using the grip of the tire, it does not use the caring line, but when the tire comes up or rains it uses the caring line. The reason why the kaiting line is useful during rain is that it is difficult for one to step strongly in front of the corner. The other is because the water floats on the surface of the pavement and the road surface may become very slippery.


Actually there are slight irregularities on the road surface before and after the corner, and if it is the fastest line it rubs the bottom, there are obstacles that you do not anticipate, and there are other machines and you can not take the desired line Yes.