McLaren MP4-21 - alternative front wing solutions 30 September 2006
McLaren brought two solutions to China, their differences related to main profile and endplate. Both are an optimised mix of previous designs seen throughout the season. The Mark I version sports the original spoon profile introduced early in the year, coupled with the endplates adopted at Hockenheim. These endplates feature a vertical S-profile with a vertical bottom, and are missing the mid-height horizontal winglet seen on previous versions. The Mark II solution features the double-curve profile introduced in its definitive version at Silverstone, coupled with the completely vertical endplates adopted by De la Rosa in Hungary. The Mark I is slightly biased towards the fast section of the Shanghai circuit, the Mark II to the slower part. Both, however, provide similar amounts of overall downforce.