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Williams-FW35-sidepod_2902910.jpg

Williams-FW35-sidepod_2902910.jpg

http://www.planetf1.com/photo-gallery/8509639/A-Look-At-Williams-FW35#photo=10

Williams and Caterham may have to drop the controversial vanes that sit in the 'Coanda channel' of their 2013 Formula 1 cars after being advised that the FIA considers them to be illegal.

The new Williams FW35 features a two-part vane behind the exhaust, mounted at the top of the U-shaped channel into which the exhaust pipes exit, while Caterham has a similar one-piece part placed a little lower.

Technical director Mike Coughlan was adamant that the part is legal when asked about it in the wake of the car being unveiled on Tuesday morning.

He believes the fact that the vane is in two parts makes it permissible, whereas he sees the Caterham design as illegal because it is a single piece and fully encloses the Coanda channel.

But the Williams team has confirmed that the FIA approached it on Tuesday morning to express its view that the design, along with that of Caterham, is illegal.

The FIA insists that an exhaust's primary purpose must not be to affect the aerodynamic performance of the car, a stipulation governed by a combination of the technical regulations and private technical directives issued to the teams.

In order to ensure this is not happening, it deems that the sides of the Coanda channels are not allowed to converge in any way, meaning that they must be vertical or slope outwards.

Exhaust gases are allowed to have an incidental aerodynamic effect, but what Williams and Caterham have attempted is understood to be seen as overstepping the mark.

Despite the FIA's concerns, its current position is only advisory and both teams can continue to run their designs during testing, which is unregulated beyond safety standards.

Should they continue to run them once the season starts, the FIA is able to refer the matter to race stewards for consideration.

When contacted about the situation, a spokesperson told AUTOSPORT: "The team spoke with the FIA this morning (they approached us), which is when they gave us their view.

"The team are now seeking further clarification on this and a decision as to whether this design will be carried forward will be made before the first race."

http://www.autosport.com/news/report.php/id/105623

Times
1 Sergio Perez McLaren 1m21.848s 97 Soft
2 Sebastian Vettel Red Bull 1m22.197s +0.349 84 Soft
3 Kimi Raikkonen Lotus 1m22.697s +0.849 43 Medium
4 Lewis Hamilton Mercedes 1m22.726s +0.878 121 Hard
5 Fernando Alonso Ferrari 1m23.247s +1.399 76 Medium
6 Valtteri Bottas Williams 1m23.561s +1.713 98 Soft
7 Daniel Ricciardo Toro Rosso 1m23.718s +1.870 70 Medium
8 Paul di Resta Force India 1m23.971s +2.123 62 Medium
9 Nico Hulkenberg Sauber 1m24.205s +2.357 88 Medium
10 Max Chilton Marussia 1m25.115s +3.267 67 Soft
11 Charles Pic Caterham 1m26.243s +4.395 102 Medium

http://www.planetf1.com/driver/18227/8512691/Perez-hits-the-front-in-Barcelona

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