Red Bull lodges protest against Mercedes over DAS

Red Bull has officially lodged a protest with the FIA stewards over Mercedes’ dual-axis steering (DAS) system ahead of this weekend’s Austrian Grand Prix.

Mercedes debuted DAS – an innovative steering solution allowing the drivers to adjust the toe angle of the car from the cockpit – in pre-season testing, sparking intrigue in the paddock.

Many of Mercedes’ rivals were known to be questioning the legality of the system, while Red Bull was understood to be planning a protest in Australia prior to the race being cancelled.

Red Bull team principal Christian Horner said earlier today he was seeking clarification from the FIA over DAS, but remained coy on whether the team would lodge a formal protest.

The FIA has now announced that a formal protest has been lodged by Red Bull against both Mercedes cars driven by Lewis Hamilton and Valtteri Bottas in practice on Friday at the Red Bull Ring.

Both drivers were seen to be using DAS on their cars through practice as Mercedes swept to a 1-2 finish in both sessions.

Mercedes and Red Bull will meet with the FIA stewards in Austria at 7:10pm local time on Friday.

The stewards’ ruling cites an alleged breach of Articles 3.8 and 10.2.3 of the technical regulations, with the latter being the expected grounds of protest relating to the suspension of the car.

Article 10.2.3 states that “no adjustment may be made to any suspension system while the car is in motion”.

Article 3.8 of the regulations relates to aerodynamic influence, stating that “any specific part of the car influencing its aerodynamic performance must comply with the rules relating to bodywork” and “must be rigidly secured to the entirely sprung part of the car (rigidly secured means not having any degree of freedom)”.

The regulation added: “With the exception of the driver adjustable bodywork described in Article 3.6.8 (in addition to minimal parts solely associated with its actuation) and the parts described in Articles 11.4, 11.5 and 11.6, any specific part of the car influencing its aerodynamic performance must remain immobile in relation to the sprung part of the car.”

DAS has already been outlawed for the 2021 season under the planned technical regulations.

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