Originally Posted by
FaultyMario
2021 is looking like another 2009, in the technical department.
It seems that the new "cut" floor is like another "stacked diffuser" area of opportunity. FWIU, the lack of strakes, ramps and other aero bits ahead of the rear wheels is going to make the underside part of the rear-end have aerodynamic "spills", that is, the space between the track and the car's floor won't be pressure-sealed like it has been in the last few years.
From what ScarbsF1 and other tech bloggers have been posting online the main solution from teams so far is to have a "frontal diffuser" in the area below the mirrors, just in front of the radiator holes. So that air from the frontal area, both streams already conditioned by aero devices (on the front wing and along the nose assembly) and dirty air (caused by the rotation of the tires and the temperature of the brakes), can be channeled a)around the coke bottle to wings at the rear, b)tightly thru the floor and to the the diffuser and, c) away from the rear wheels.
That "frontal diffuser" is made of the nose cape, ramps and delta wings in the bargeboard area and of the shape of the "face" of the sidepods, so whoever gets it right from the get go is going to do a Brawn.
Right now, I'm thinking the 2021 season is an adult actress' holes and Mercedes are all lubed up and ready to go.