CDG Wing gets thumbs down from tech chiefs.

The FIA's proposed shake-up of Formula One aerodynamics has received a setback after technical chiefs ruled out the possibility of introducing the radical Centreline Downwash Generating [CDG] Wing for the 2007 season.

The idea had been studied in earnest for the first time since its proposal in October when the technical directors met on Friday, but was rejected as a viable alternative to the current set-up in time for the 2007 campaign.

"The discussion was very positive and constructive and has helped to move things forward significantly," an FIA spokesman told Reuters, "However, the teams felt that more work had to be done on optimisation and, given the time constraints, implementation for 2007 was not therefore an option."

The spokesman did add, however, that talks on the future direction of F1 aerodynamics suggested that the CDG Wing could make it into the rulebook in the longer term.

"We were very encouraged by the response from the meeting, and consider it is only a matter of 'when', not 'if', for the new wing," he insisted.

FIA president Max Mosley had hoped that the radical wing - which would replace the current configuration with two smaller wings behind each rear wheel, with a gap between them - could be introduced a year before the new F1 rulebook was due for overhaul, but it appears that the teams have now succeeded in delaying its introduction until 2008 at the earliest.