Double-decker diffusers banned for 2011

Williams' double-decker diffuser

Williams' double-decker diffuser

The infamous double-decker diffusers, the centre of the contreversy at the start of the 2009 season, has been banned for the 2011 season.

This rule could not be implemented for the 2010 season, as it was too late and the F1 cars had been nearly completed. However, technical rule changes for the 2011 season have meant that the undertray slots, which allow double-decker diffusers to work, have been outlawed.

Artwork of Toyota's double-decker diffuser

Artwork of Toyota's double-decker diffuser

The F1 Technical Working Group has been the reason these rule changes could be implemented, as it is a meeting of all the F1 teams. However, Christian Horner, boss of Red Bull, believes the rule changes should be further beyond simple tweaks:

“I think the most important thing is to set clear objectives – as to what do the governing body and the promoters want F1 to be,” he told AUTOSPORT last weekend. “What do they want the F1 cars to be able to do?

“Then rather than cherry picking at bits and pieces, we can look at the package as a whole to encourage more overtaking, and to enable the cars to follow more closely.”

“I think looking at components in isolation is often quite dangerous, so I think it is important that the overall objective is clearly defined and then worked on by the various technical groups.”

It is expected that the effective outlawing of double-decker diffusers will slow the cars down in 2011 by up to 2 seconds per lap.

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