In Formula 1, the premier class of racing, there are two possible variants of the wheel suspension. The first possibility is called "Push rod"And the second variant is called" pull-rod ". In this article, we would first like to introduce you to the "Push rod" Present the variant in more detail. Because these are also found in vehicles outside of Formula 1. Considered greatly reduced, there are exactly three elements that make the interrelationships of the suspension easier to understand. A rotatable anchor point in the upper part of the cockpit forms the center of the entire suspension. Both the eponymous push rods and the dampers are fixed at this anchor point. If the racing car drives too fast over a bump, such as a curb, the wheel and struts move upwards.
The Pushrod suspension!
This not only shortens the distance from the anchor point of the pressure strut on the wheel, but also the distance from the anchor point of the pressure strut on the rotating armature. The swivel anchor begins to rotate to compensate for the gap. At the same time, a damper is anchored on the chassis of the vehicle, which is also connected to the rotating armature and dampens it. In addition, a coil spring is mounted between the two pivot anchors. With this spring, the basic rigidity of the suspension can be adjusted manually.
Advantages of "push rod":
The “push rod” variant offers many advantages, especially in terms of aerodynamics. Not only is it more attractive in appearance, but the airflow can also run more undisturbed than with the "pull-rod" version.
Disadvantages of "push rod":
A disadvantage of this variant is the slightly poorer cornering of the vehicle, as the car's center of gravity is logically shifted upwards due to the attachment in the upper part of the chassis.
Which series vehicles already have a “push rod” suspension?
The Lamborghini Aventador, the successor to the Murciélago, was the first standard Vehicle equipped with a “push rod” suspension. Before that, the suspension was only used in racing cars. On the Lamborghini, the suspension works exactly like on the Formula 1 racing cars. The springs and the dampers are therefore can not be Mounted on the wheel carrier, but on the inner body structure and positioned horizontally under the windshield, not far from the engine.
The forces are transferred from the wheel carrier to the spring and damper through push rods and reversing levers. According to Lamborghini, the separation of wheel control and damping enables a significantly more sensitive response behavior and an improved comfort mode. Other street legal vehicles with Pushrod landing gear are the Lamborghini Essenza SCV12 or the Ford GT.
Retrofitting Pushrod suspension?
If the vehicle is already ex works with a Pushrod suspension equipped, it is also possible to replace this undercarriage with a third-party undercarriage. KW has, for example, with the KW coilover suspension variant 5 A variant for push rod wheel suspensions is also available. Other manufacturers of sports suspensions also occasionally have such suspensions in their range. And also the retrofitting a push rod suspension in a vehicle with conventional chassis is feasible. However, the effort is extreme, since the entire axle geometry has to be rebuilt.
Such a conversion from a conventional chassis to a push-rod suspension, for example in the Rat-Look BMW E28 "Rusty Slammington". Should such a converted vehicle then still have one in this country street legal reach, then the costs should no longer be in proportion. It is, however, a complete one New building / construction a vehicle is planned, then the push-rod suspension can be planned directly if desired. This was implemented, for example, at CALL CTR and also so much Restomod project from the USA has installed a Pushrod suspension.
Pushrod suspension in Formula 1
If you want to know how a strut suspension works and what exactly happens when a vehicle drives over a bump, you should watch this explanatory video.
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