At Singapore Sauber reverted back to the Spanish wing spec with the old inner section and back to the Bahraini spec at Interlagos and Marina Bay .
Inspired by Renault , Sauber changed completely the inner front wing section and made also the wing profiles more wavy .
Sauber moved a step forward by racing the Bahraini front wing spec at Canada and Valencia . For Silverstone and beyond the Spanish spec was brought back to use .
Sauber and all teams in general traditionally launch many updates for the first European race of the season . One of the updates for Sauber case took place at the front wing where the endplates gained a wider winglet at the back .
The C29 at Sakhir featured an interesting triple profiled front wing ( practically unchanged since launch time ) with additional double profiled cascade winglets (1) , Those winglets are mounted on the main plane and provide a significant increase in front downforce . The flap moving mechanism is housed inside the black colored vertical elements (2) while exactly under them there are vertical fences to guide better the under wing airflow reducing turbulence .
The endplates have a quite complicated design and can be considered to be consisted of two parts . The first part of triangular shape has a flopping outwards rear part (3) to divert air away from the front tyres profile reducing drag . The second part (4) is mounted a bit outer on the horizontal floor and has a upward-curving fin to add a small amount of downforce .
Finally the main plane forms a square channel (5) close to the endplates to raise the quantity of air flowing under the wing’s profile to boost downforce production , a trend aided by the W-shaped main profile .