|
AutoX, DE and Racing Discussions All discussions related autoxing, DE, amateur and professional racing activities |
|
Thread Tools | Search this Thread | Display Modes |
|
#1
|
||||
|
||||
Re: How To Brake?
Quote:
__________________
brad 24-year PCA member and PCA national DE instructor |
#2
|
||||
|
||||
Re: How To Brake?
Quote:
For example, we see pro drivers with very abrupt steering and throttle inputs, not to mention how they use the brakes. Nothing I see in vids can be classified as "smooth" driving from the input perspective. So, if you are in a corner with increasing lateral Gs, which increases lateral weight transfer and vertical and lateral loads on tires, the slip angles of the tires will change and that change is constant. To manage to stay at the optimum slip angles that generate the most grip, you have to modulate steering and throttle constantly as well. That is why we see such rapid and abrupt steering inputs. Similarly, the harder you accelerate, the more abrupt the throttle, when you lift off, the more weight will transfer to the front at a faster speed. If you do execute this at the right moment, the less brake you'll need to use. But again the input is not smooth, but the resultant action creates higher grip when needed and smoother output. Of course this is all in my very humble interpretation of car dynamics and driving theories.
__________________
Fatih Selekler 997.2 GT3 |
#3
|
||||
|
||||
Re: How To Brake?
Quote:
Some driving schools (I once heard that Jackie Stewart was a big proponent of this) use a car with a punch bowl bolted to the hood that contains a tennis ball on a string - the objective is to go as fast as you can while keeping the ball in the bowl. I will say this - many times when you see in-car views of pros racing, they're doing these kinds of inputs because they're not on the line... when I'm doing W2W racing, and making passes, I'm spending a huge amount of time off the line in order to make headway through a lot of slower cars, or just trying to find a way around someone. Driving off the line, and in the klag, might necessitate these kind of inputs, but for fast qualifying laps or time trialing, a smooth transfer of weight, and keeping those transfers to a minimum is much preferable, and ultimately faster in my experience.
__________________
brad 24-year PCA member and PCA national DE instructor |
|
|