Already at the US GP in Austin 7 days ago, Mercedes AMG surprised by fitting Nico Rosberg's car with the old exhaust solution, favouring it over the Coanda solution that the team development following the example of McLaren. In Austin, the team wanted to do a direct on-track comparison to see the benefits and disadvantages of the Coanda exhaust solution. It is no secret that ever since its introduction, the team failed to get it to work properly, while the downwash of the exhaust gases also heat up the rear tyres.
Now in Brazil, with tyre warmup not a problem like in chilly Texas, both cars have the old exhaust layout. Norbert Haug mentioned that this option was chosen to be able to do a proper tyre test, comparing the car at the beginning of the season with that at the end. Although not mentioned by Haug, Pirelli also brought 2013 prototype tyres to Interlagos, something that Mercedes undoubtedly wanted to try out without having to work out how the Coanda exhaust influenced the test data.
The team is however focused to fit its 2013 car with a Coanda style exhaust, as Haug mentioned: "But it is very clear that you have to have Coanda next year, because it gives you a benefit." The first problem for Mercedes is of course trying to resolve their extremely high tyre wear which almost no team can match. In fact, in Austin, the team simultaneously struggled to get its tyres warmed up while also suffering from high thermal degradation.
I never thought that exhaust was so important for Formula 1 cars! I admit there should be maximum exhaust gases flow but know I see that Formula 1 teams use exhaust gases for aerodynamics purpose also. And that amazes me greatly))
It is a good technique to change the exhaust systems according to the weather in the particular country where each race is held at. Some countries have extreme weather conditions like icy temperatures which require massive exhausts, whilst other temperate climate countries can cause the exhausts and tyres to heat up more quickly.
William, we, ordinary people, don't know a thing about what they do with their super fast cars! It's the highest car industry technology and I admire it!
Please register or log in with your account to comment on this blog entry