Red Bull has made changes to the edge floor and upper corner of its diffuser in an attempt to improve the dominant RB19. The team submitted notes to the FIA explaining the modifications, revealing they took inspiration from competitor designs. Red Bull‘s Chief Engineer Paul Monaghan said they had looked at the changes for a while after initially spotting them on a Williams car back in 2022. The team also admitted the design did not work for them at the time.
Monaghan said their “currency is lap time” and that’s why they can’t assume they have the best solution in all areas of the car. The design change extracted a small increase in local load towards the trailing edge of the diffuser profile in the upper corners. Monaghan noted it would not be the most influential thing, but it can help. The change was included in the local bit of the floor, where they could do it, as the team was quite constrained height-wise.
This move from Red Bull to use another team’s idea comes as its main F1 rivals, Mercedes and Ferrari, have copied the squad’s downwash sidepod concept in their bid to catch up. Red Bull‘s changes to the rear of the car, where the tops corners of the diffuser were profiled for greater curvature, were particularly interesting.
Red Bull admitted that its design changes were something it had looked at for a while, but the team did not offer specific details before the tweaks. Monaghan noted that the design change helped “a little bit,” but it looked like a larger change than what was actually realised. The team could include that in that local bit of the floor where they were in a position to do so.