Collection: Sim Racing: A Guide for Beginners - Wheel base

In the realm of sim racing, the wheel base is a pivotal component, acting as the cornerstone of the entire setup. This device not only houses the steering mechanism but also serves as the primary interface between the driver and the virtual racing environment. A high-quality wheel base can significantly enhance the realism of sim racing, offering tactile feedback that replicates real-world driving sensations. In this wiki, we explore the intricacies of sim racing wheel bases, their importance in a sim rig, and delve into how they function, particularly focusing on those equipped with servo motors.

The Heart of the Sim Racing Setup

The wheel base is arguably the most crucial part of a sim racing rig. It determines the quality of force feedback, which is essential for a realistic and immersive racing experience. The force feedback mechanism allows drivers to feel the road, understand the grip levels of their car, and react to various driving conditions, much like in real-life driving.

Types of Wheel Bases

Wheel bases come in various designs, each offering different levels of performance:

  1. Gear-Driven Wheel Bases: Often found in entry-level setups, offering basic force feedback.

  2. Belt-Driven Wheel Bases: A step up, providing smoother and more powerful feedback.

  3. Direct Drive Wheel Bases: The gold standard, directly connecting the servo motor to the steering wheel, offering unparalleled realism and precision.
    Servo motor

Servo Motors in Wheel Bases

  • Definition: Servo motors are a type of electric motor that can be precisely controlled for speed and position, making them ideal for sim racing applications.

  • Functionality: In a sim racing context, servo motors are responsible for delivering detailed and strong force feedback. They can replicate the subtle nuances of driving, such as the sensation of tire slip, road texture, and the resistance experienced during steering.

  • Advantages: Servo motors provide smoother, more responsive, and more realistic feedback compared to traditional gear or belt-driven systems. This leads to a more immersive experience and can even aid in driver training and skill improvement.

Understanding Torque and Its Measurement in Newton-Meters (Nm) in Sim Racing

In the context of servo wheel bases for sim racing, "Nm" stands for Newton-meters, which is a unit of torque. Torque, in simple terms, is a measure of the rotational force that the wheel base can produce. In sim racing wheel bases, especially those with servo motors, torque is a critical specification as it directly impacts the realism and intensity of the force feedback experienced by the user.

Understanding Newton-Meters in Servo Wheel Bases:

  1. Definition of Newton-Meter: One Newton-meter is the torque resulting from a force of one Newton applied perpendicularly to the end of a moment arm that is one meter long. In sim racing, this translates to the force exerted by the wheel base on the steering wheel.

  2. Relevance in Sim Racing: Higher torque (measured in Nm) in a wheel base means a stronger and more forceful feedback to the driver. This enhances the simulation experience by providing a more realistic representation of the forces a driver would feel while racing a real car. For instance, the resistance when turning the wheel, the vibrations and jolts when driving over different surfaces or curbs, and the force feedback during understeer or oversteer scenarios.

  3. High vs Low Torque Wheel Bases: High-torque wheel bases are capable of delivering more powerful feedback, which can be crucial for professional or experienced sim racers who seek an ultra-realistic racing environment. On the other hand, lower torque wheel bases might be sufficient for casual or entry-level racers.

  4. Servo Motor Advantage: Servo motors in wheel bases are particularly effective in delivering high and precise torque. They are known for their accuracy, responsiveness, and ability to replicate nuanced forces, making them ideal for simulating various driving conditions.


  • Personal Preference and Skill Level: The ideal amount of torque depends on personal preference and skill level. While high torque can provide an intense and realistic experience, it may be overwhelming for beginners.
  • Safety and Comfort: High torque levels require a firm and secure mounting solution for the wheel base and might demand more physical effort from the racer, highlighting the importance of ergonomics and safety in your setup.

In summary, the torque (Nm) of a servo wheel base is a key factor in determining the quality and intensity of the sim racing experience. It allows sim racers to experience a realistic and responsive representation of driving forces, contributing significantly to the overall immersion and effectiveness of the simulation.

Asetek Wheelbase


The choice of a wheel base is a critical decision for any sim racer. From gear-driven models for beginners to direct-drive systems for professionals, each type offers a unique racing experience. For those seeking the ultimate in realism and performance, wheel bases with servo motors are the preferred choice, offering a level of immersion that closely replicates real-world driving.

Understanding the role and mechanism of wheel bases in a sim racing setup is key to choosing the right equipment and elevating the overall racing experience.