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GP Week : Issue 171
33 GPWEEK.com // 33 GPWEEK.com // PARTNERS: F1 >>> KOREA Just one week from the Japanese Grand Prix, the race in South Korea at Yeongam, wasn’t expected to be particularly active in terms of car development. However, we have to admit, that our forecast was overturned by the facts. It was interesting to see how Lotus is continuing its push for wards on development, by introducing for the first time their version of Coanda style exhausts. This new version was introduced only on Raikkonen’s car, which kept the solution throughout the weekend, while Grosjean continued using the old version. The revised system improves the management of the airflow towards the side section of the diffuser and beam profile of the rear wing. It is a fact that this kind of exhaust layout has largely become a common factor for the top of the grid teams, within the development of their rear end aero packages, this season. It is expected that both Lotus cars will use the new version in India. Remaining in the same crucial area, Red Bull brought to Korea a revised version of the RB8 sidepods, in particular differing from the previous one in their rearmost section. In detail the sidepods are shorter than before – this change may be easily spotted by looking at the length of the horizontal slit placed under the exhaust terminal section, that is dramatically shortened compared to the previous version. The slit is now about 35cm wide compared to the almost 50cm of the previous one. The new layout of the sidepods helps in terms of management of the Coanda effect around the rear end of the car. Better stability, increased downforce generated by the diffuser and increased straight-line speed are the benefits generated by the aero changes introduced in the last three races. Now with just four races t o go, it is becoming more and more difficult to see dramatic changes on the cars, but it is clear that Red Bull will continue pushing in this direction trying to consolidate its advantage over Ferrari. It was only a week between Japan and Korea, but still the contenders rolled out new developments, as Tech Editor Paolo Filisetti explains TECHNICAL Keep it coming ...