In Formula 1, even an apparently secondary component can become part of a much broader technical solution. Red Bull’s floor stay is a good example, with the team appearing to combine structural requirements with an aerodynamic concept that also influences the shape of the sidepods.
The key point is the relationship between the floor stay, the bodywork and the floor itself. Red Bull appears to have used the intersection between the bodywork and the floor to develop a different solution from the more conventional layout seen on some other cars.
Red Bull integrates the floor stay into extreme sidepod geometry
One of the most interesting aspects of the solution is the shape of the sidepods. The cross-section shows a very pronounced concavity, while the lower part of the bodywork, which descends towards the floor, adopts a particularly extreme profile.
This is not simply an aesthetic choice. The geometry of the sidepods influences how the airflow is directed towards the floor and the rear of the car.
Red Bull appears to have worked specifically on this relationship, positioning the floor stay along the line where the floor and bodywork meet. In this way, the structural component becomes part of the overall design solution used in the sidepod area.
The difference compared with a more traditional approach lies in how the stay is incorporated into the overall geometry of the car rather than being treated purely as a separate component used to support the floor.
What does the floor stay do in Formula 1?
The floor of a Formula 1 car is subjected to significant pressure differences between its upper and lower surfaces. These forces can cause the structure to deform, altering the floor geometry as speed, aerodynamic load and ride height change.
This is particularly important because the floor is one of the key areas responsible for generating aerodynamic downforce. If its shape changes while the car is running, the airflow conditions around it can also change.
Designers therefore need to find a balance between structural stiffness, weight reduction and geometric stability.
For this reason, floor stays are used to connect the floor to the structure of the car and help limit deformation. Their position and the way they are integrated into the design can also become important factors in defining the surrounding bodywork.
How the sidepod shape influences airflow
The solution fits into a broader search for better management of the airflow travelling along the sidepods and towards the rear of the car.
The shape of the sidepods helps direct air towards the outer areas around the wheels and towards the rear of the car. These flows then interact with the floor and diffuser, both of which play a major role in generating aerodynamic load.
The objective is to create a configuration in which the bodywork, floor and structural elements work together rather than as isolated components.
In Red Bull’s interpretation, the distinctive feature is the use of the area where the floor surface and bodywork meet. The sidepod shape and the position of the floor stay effectively become parts of the same overall design.
It is important, however, to distinguish the design principle from the actual performance gain. The geometry helps explain the technical approach, but there are no quantitative figures available to establish how much additional aerodynamic load the solution may actually produce.
Red Bull and Audi take different approaches
Audi appears to have adopted a more conventional layout in the same area of the car.
In that configuration, the bodywork shape remains visually and structurally separate from the stay, which connects the rear section of the structure to the floor to help control deformation.
Red Bull, by contrast, appears to have developed a layout in which the stay is positioned directly along the intersection between the floor and the bodywork, integrating it more deeply into the geometry of the surrounding area.
The comparison highlights how the same structural requirement can be addressed through different design philosophies.
The challenge is not simply to reinforce the floor, but also to determine whether the shape of the surrounding surfaces can be exploited as part of the aerodynamic concept.
Technical regulations and Formula 1’s grey areas
The solution also raises an interesting point about how Formula 1’s technical regulations are interpreted.
Teams can consult the FIA before introducing concepts that sit close to the limits of a particular regulatory interpretation. These discussions can clarify certain aspects of a design, but they do not necessarily eliminate every risk associated with an innovative solution.
The challenge is to find an interpretation that can be defended under the wording of the regulations while also producing a potential technical advantage.
In Formula 1, this can become something of a chess match between designers and the governing body. Teams look for areas where innovation is still possible, while the FIA must determine whether those solutions comply with the rules.
An interpretation that is initially accepted can also become the subject of clarification or regulation changes in future seasons.
That means teams must also consider the risk of committing resources to a concept that may have only a limited competitive lifespan.
Why design integration matters in Formula 1
The floor stay example highlights one of the most important aspects of modern Formula 1 engineering: performance rarely comes from a single isolated component.
Instead, the objective is to make the structure, bodywork and aerodynamics work together as one integrated system.
The floor stay has a clear structural function, but its location can influence how the surrounding area is designed. In Red Bull’s case, the team appears to have used this possibility to support an especially aggressive sidepod geometry.
There is also a cost consideration. A solution of this type requires design work, simulation, manufacturing and validation, all of which consume resources.
The investment must therefore be justified both by the expected performance benefit and by the likelihood that the component can remain usable throughout the season.
The ability to interpret the regulations, assess the associated risks and turn a structural requirement into a broader design opportunity is therefore an important part of Formula 1’s technical competition.
Why Red Bull’s floor stay solution is significant
Red Bull’s floor stay demonstrates how a component originally intended to provide structural support can become part of a much wider Formula 1 design strategy.
The distinctive feature of the solution is the way the stay appears to be integrated with the bodywork geometry exactly where the floor and sidepod surfaces meet.
That approach fits into the wider objective of managing the airflow heading towards the floor, diffuser and rear of the car as efficiently as possible.
The contrast with Audi’s more conventional interpretation also shows how much design freedom can still emerge from the wording and interpretation of Formula 1’s technical regulations.
In modern Formula 1, even an element introduced primarily to control structural deformation can become part of a broader aerodynamic philosophy, with every surface and mounting point assessed for the possibility of gaining performance.
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