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Monday, March 17, 2025

Ferrari from push rod to drag rod suspension? Here is what adjustments


Rumors suggesting that Ferrari will implement a technical shift for its 2025 F1 automotive, shifting from a entrance suspension with a “push rod” setup to a “pull rod,” are rising more and more persistent. Such a alternative would characterize a major change within the automotive’s mechanics, with repercussions for aerodynamics and weight distribution as effectively. Let’s analyze these configurations.

Comparability of Configurations
Within the “push rod” configuration, the arm connecting the wheel hub to the elastic elements mounted on the chassis slopes upward. In different phrases, the part is hooked up “greater” on the chassis facet than on the wheel facet. Consequently, throughout relative motion the place the wheel is raised relative to the chassis—comparable to when passing over a bump or curb or throughout cornering roll and car pitching—the arm compresses the elastic elements. Thus, it’s known as a “push rod” as a result of it really works below compressive stress. This has been the configuration chosen for Ferrari’s entrance axle till the previous season.

The “pull rod” suspension Ferrari might undertake, then again, is the precise reverse. The arm “descends” from the wheel hub to the elastic elements, that are positioned a lot decrease on the chassis. On this manner, the arm comes into motion by “pulling” them. It really works below tensile stress, which is why it’s known as a “pull rod.”

What Are the Professionals and Cons?
At the beginning, the effectiveness of a suspension is decided by how effectively its kinematics transmit wheel actions to the chassis—an element indirectly tied as to whether it’s a push or pull rod however quite to the precise design and its geometry. That stated, there are different elements topic to a worldwide analysis of those philosophies.

The kind of suspension additionally impacts different areas of the automotive, comparable to aerodynamics. Like every part uncovered to airflow across the automotive, it generates drag. Optimizing this facet, particularly in aerodynamically crucial areas, enormously enhances the automotive’s effectivity. This profit turns into notably vital in high-speed sections. On this context, each the location of the arm, based mostly on its inclination, and its dimension have to be thought of. As beforehand famous, push rod and pull rod arms are subjected to totally different stresses and have various lengths. Consequently, through the design section, they’re sized otherwise, leading to distinct cross-sections. On this regard, pull rod suspension tends to be extra advantageous.

Concerning weight distribution, the pull rod configuration is superior. By inserting the elastic elements decrease than the choice, it permits for a decrease heart of mass. Nonetheless, this configuration could also be much less accessible throughout meeting or changes. In a racing state of affairs, the place timing is crucial, this might make push rod suspension extra advantageous.

In conclusion, as evident, whereas every configuration has its peculiarities, no choice outright dominates the opposite. A lot will depend on the design selections made by engineers to optimize numerous efficiency areas. It stays to be seen whether or not Ferrari will certainly undertake the much-discussed pull rod entrance suspension when the brand new automotive is unveiled.

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