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McLaren MP4-26 - brake duct aero development 27 August 2011

Brake ducts are ever evolving and becoming increasingly important as aerodynamic devices. As well as attaching aero fins to the inside, teams - including McLaren - have started to mimic the effect of the wheel rim covers seen in previous seasons (but now banned) with complex-shaped brake ducts which better control the flow of air around the outside of the wheel. This drawing shows the rear brake drum on the MP4-26.