The recently revealed ‘W-duct’ aside, another technical secret has been discovered aboard Mercedes’ newly launched W03.
Rumours insist the German squad was the last to reveal and test its 2012 car because it boasts a few highly innovative ideas that could drive Michael Schumacher and Nico Rosberg to the middle of the podium.

Germany’s Auto Motor und Sport reports that mechanics working for the Brackley based team are making more efforts than usual to hide the front and rear of the car, and erecting huge screens in front of the pits between test runs in Barcelona.

But a big secret is now out of the bag, and it’s located beneath the rear rain light and being described by insiders as “like a double diffuser”.

Italy’s La Gazzetta dello Sport said the feature is believed to produce an effect similar to the one pioneered by Mercedes’ predecessor Brawn GP in 2009, which resulted in the championship for Jenson Button.

And according to Auto Motor und Sport, the concept differs to the banned double diffuser because the air is channelled through holes at the rear of the engine cover.

The concept, despite complying with the FIA’s blown diffuser clampdown, also reportedly involves the clever redirection of exhaust gases.

And yet another innovation on the Mercedes could be a passive ‘F-duct’-style addition to the car’s new rear wing, working alongside the ‘DRS’ system.

When asked about the ‘ducts’, Rosberg and Schumacher played it coy: “What’s that?” Rosberg answered, while Schumacher joked that it sounds like something that should go “quack!”

“They are a good team,” Red Bull team boss Christian Horner told Sky when asked about Mercedes.

“They have some good people so it would be foolish to underestimate them.”

Meanwhile, TZ newspaper in Germany reports that the FIA could be set to clamp down even harder in the area of exhaust blowing.

There are rumours Renault and Mercedes-powered teams are still using clever engine mapping techniques for aerodynamic effect.

Martin Whitmarsh has played down fears McLaren has made a crucial mistake by overlooking the ‘step nose’ trend that will dominate the 2012 grid.
With the new Mercedes having now broken cover, and Pedro de la Rosa revealing that HRT’s 2012 car also has a step nose, famous British team McLaren is all alone in keeping a smooth aerodynamic line from the end of the monocoque to the tip of the nose.

Every other team has decided that the best solution to the new rules forcing a lower nose is to plough ahead with having as high a chassis as possible, in order to maximise the flow of air underneath the car.

“I’ve asked our technical guys if they are sure that we have done the right thing and they have told me not to worry,” team boss Whitmarsh is quoted by Germany’s Auto Motor und Sport.

He admitted there is an obvious aerodynamic benefit to the ‘step nose’ solution.

“But we have a lower centre of gravity, more freedom in the suspension geometry, and a more comfortable seating position and a better view for the driver,” added Whitmarsh.

The main reason for McLaren’s decision is that, having already gone a different route to Red Bull at the front of the car last year, a ‘step’ nose would have required a wholesale design philosophy change.

“This car is an evolution,” confirmed Whitmarsh.

“In terms of radical innovations that are visibly obvious, I’ll have to disappoint — these rules just don’t leave that sort of room any more.”

Sauber has earmarked May’s Spanish grand prix for the introduction of a Red Bull-style exhaust layout.
“We will have the new exhaust system in Barcelona,” confirmed team boss Peter Sauber to Blick newspaper.

Germany’s Auto Motor und Sport said Kamui Kobayashi will test the system, tipped to add at least five tenths per lap to the pace of the C30 car, on Friday at Istanbul.

“It will not come to the car until it has been properly tested,” Sauber confirmed.

Teams are cautious about blown-exhaust upgrades, with the latest lesson taught by struggling Williams in China, when its Red Bull-style system burned holes through the floor of Rubens Barrichello’s FW33 in practice.

Like Sauber, the British team will attempt to run the exhaust again in Spain.

“Let’s wait until Spain before we rejoice,” insisted Sauber, “although until now, every innovation has brought us a step forward.”

Finally, the Aragon Motorland Casey Stoner and Ducati are back to victory. An important success for the Australian who won the third championship with the clear objective at this level is confirmed at the weekend in Motegi, a circuit but not particularly loved by the 2007 World Champion.

“Motegi is a track, a series of “stop and go ‘, it offers many features, and then sliding is not really one of my favorite layout, “said Casey Stoner. “Having said that is positive to consider that the bottom is smooth and there are many holes and depressions that often this season, they made us suffer.

Requires that the bike is stable under braking and acceleration and effective, because of these characteristics, I hope that the latest set of changes that we used to Aragon are effective again. In Spain, in fact we have finally managed to improve the stability and find a bit ‘more “grip” and if we do here we try to make another good result. “

The best result at Motegi Casey Stoner on the Ducati is the second in 2008, the race where Valentino Rossi won his world title at the expense of Australia.