Listen to this article Mercedes W13 rear detail with sensors Photo by: Giorgio Piola A close-up of the kiel probe rake fitted to the rear of the Mercedes W13, which you’ll note has the fence shaped in order it doesn’t affect the downforce being produced too dramatically. The kiel probes are also oriented towards the flow direction. Mercedes W13 cooling Photo by: Giorgio Piola As the Mercedes mechanic plumbs in a cooler to the sidepod we also get a nice view of the outer edge strake on the W13, which has been altered as part of the team’s introduction of new parts at the second test. Mercedes W13 detail Photo by: Giorgio Piola Mercedes cut down the inner strake in their underfloor tunnels (arrow). Red Bull Racing RB18 cooling Photo by: Giorgio Piola A close-up of the cooling louvres on the Red Bull RB18, with a panel added in the forward section to reduce the amount of cooling. Williams FW44 side detail Photo by: Motorsport Images The entrance to the underfloor tunnels on the Williams FW44 with the inner strakes that peek out over the top of the floor’s leading edge, while the outermost edge strake is lower than some of the other ones we see deployed by rivals. Front wings for the Alpine A522 Photo by: Motorsport Images Different front wing specifications on offer to Alpine, with the main difference in the application of the Gurney flap on the trailing edge of the upper flap, with just a short section on the lower wing, while the upper one has an almost full-length Gurney on the adjustable section. Williams FW44 front suspension detail Photo by: Motorsport Images An additional camera mounted to the camera pod on the nose of the Williams which can be altered to look at different parts of the front wing. Williams FW44 front brake detail Photo by: Motorsport Images The Williams FW44 front brake duct and wheel wake deflector assembly which has some thermal stickers mounted on the drum to monitor temperatures. Nicholas Latifi, Williams FW44 Photo by: Motorsport Images The outlet in the upper, outer corner of the Williams FW44’s sidepods is closed off, while some of the gills in the engine cover’s cooling panel …