The Feasibility and Futile Attempt of Bending Cars for Improved Steering: A Comprehensive Analysis

In recent years, the idea of bending cars in the middle to improve steering has been proposed, but it remains a concept far from practical implementation. We will explore the limitations and practicalities of such a design and compare it with existing solutions.

Myth Debunked: The Pointless and Expensive Solution to a Non-Problem

The notion that cars could bend in the middle to aid steering is a curious one indeed. A technical expert rightly dismissed it as a pointless, expensive solution to a non-problem. This assertion is backed by the fact that four-wheel steering (4WS) already exists and is rarely adopted due to its high cost and complex mechanics.

The Inevitable Challenges of Articulating Cars

The concept of articulated cars, where a significant portion of the vehicle bends at the middle to facilitate better steering, comes with numerous challenges that make it impractical. Firstly, to ensure each half of the car remains stable, it would necessitate at least 8 wheels. This massive increase in wheels would not only boost the initial cost but also reduce performance and increase vehicle weight, both of which would rise the fuel consumption and decrease stability. Essentially, all these complications are in pursuit of a benefit that is not substantial enough to justify the compromises made.

Existing Solutions: 4WS and Other Innovations

Modern automobiles already incorporate strategies to enhance steering based on their speed. For instance, rear wheels are steered slightly at low speeds to make the curve radius smaller, while they automatically align for smoother lane changes at higher speeds. Another innovative solution is the Alstom Aptis eBus, which features both front and rear wheel steering, making it highly maneuverable with reduced turning radius. Additionally, in construction vehicles, a hydraulic drive train and steering mechanism allow for precise maneuvering. These technologies, while complex, offer significant advantages in certain contexts, such as increased stability and better handling.

Real-world Examples and Exceptions

Various vehicles do exhibit a form of middle flexibility, often seen in long vehicles or in tight confines. Cargo trucks, airport baggage cars, and construction equipment, which rely on hydraulic systems and have a joint in the middle for flexibility, are prime examples. These applications, however, are specifically designed for their unique requirements and may not translate well to consumer vehicles due to issues such as seating arrangement, waterproofing, and engine layout.

The impracticalities of Central Pivoting in Cars

Designing a car with a central pivot would be a solution to a non-problem. The challenge lies in the complex seating arrangements, waterproofing, and the intricate engine and transmission layout. Cars tend to be relatively short compared to the typical road bends, making such a feature redundant. Moreover, the control of the degree of bend applied as the steering wheel is turned is another significant hurdle. Would this pivot be a direct linkage or a proportional linkage? What about at high speeds—how would the pivot avoid shaking and is there a cut-off speed?

Ultimately, the concept of curvilinear cars remains in the realm of theoretical curiosity. Contemporary solutions in 4-wheel steering and innovative vehicle designs provide more practical and effective means to enhance maneuverability and stability without the significant drawbacks associated with curved car designs.

Key takeaway: While bending cars might seem innovative, it carries more downsides than benefits for modern consumer vehicles. Contemporary technologies, such as 4WS and specific vehicle designs, offer effective solutions that are far more practical and efficient.