Mercedes shark fin.

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    Profile photo of pobtoon

    Hi all, long time reader first time poster. Was just wondering why Mercedes dont use a shark fin. The top 3 teams has one on their car. Also what are the pros and cons of running one. Thanks

    Profile photo of Tom_ec1

    The major pro is that it normalises the air flow over the rear wing.

    If you imagine the airflow over a car driving around a fast corner you will see that it does not strike the rear wing at a perpendicular angle (because the car is turning). Since rear wings are designed for maximum aerodynamic efficiency when the car is travelling in a straight line, they do not generate as much grip around corners.

    A shark fin will redirect air towards the rear wing at a perpendicular angle when the car is turning, thereby creating a situation more similar to when the car travels in a straight line and achieving higher levels of downforce.

    In 2010 it’s also useful to have a shark fin to support the F-duct, since it happens to go exactly where you would like to release airflow.

    A major con is increased vulnerability to side winds.

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