In Australia Sauber drivers preferred to race with different car set up and different wing specs . Kobayashi raced with the higher downforce launch front wing spec and the additional beam mini plane that guarantee a more stable car especially when braking late , something suitable to Kobayashi’s driving style and his appeal of overtaking . On the contrary Perez raced with the lower downforce front wing , that was first seen at Jerez on February, having also the beam mini plane removed , a configuration more appropriate to his “velvet” driving style which is to prioritize conservation of tires in good condition . The later is reflected on Perez different pit stop strategy to Kobayashi .
Pit stop strategy
|Sergio Perez||Medium -Lap24 ,||Soft –Lap 34|
|Kamui Kobayashi||Soft –Lap 13 ,||Soft –Lap 23 ,||Medium –Lap 22|
Lastly Australian rainy weather was not enough and Sauber run both cars having the large engine cover funnel .
To strengthen the stiffness of the diffuser and rear floor , Sauber connected the later to the rear crash structure via a pair of cable supporters . Their task is to eliminate possible vibrations that would potentially harm the aero behavior of the rear end . To even increase rear end stability an extra mini plane was added on the beam wing ( in yellow) .
- Sauber C31 – Rear beam wing (formula1techandart.wordpress.com)
Exhaust blown diffuser ban had a big negative impact on rear downforce production . Thus Sauber optimized as possible the rear zone to gain some of the lost rear grip by making the rear zone even tighter and shorter . One element that was redesigned carefully is the beam wing which has a more aggressive attack angle . That alone pushed the team to develop top mountings (in yellow) to clean from airflow disruption the lower pressure undersurface of the wing which is more sensitive and crucial for downforce production .The Sauber C30 of last season had a more conventional configuration with the beam plane being connected from its under surface onto the top of the rear structure . Williams had last season an even more radical approach , a central mount-less beam wing which was only attached on the endplates .
Top mountings is not something new and are already seen on other forms of racing and also on Marussia Virgin’s car the previous season .