Side-mounted vs. undermounted wheel bases

When building a sim racing rig, one of the most crucial decisions you’ll make involves selecting the right wheel base setup. The wheel base is the heart of the sim racing experience, controlling everything from force feedback to the overall feel of the steering wheel. However, the way the wheel base is mounted can significantly impact performance, ergonomics, and overall feel. In this article, we’ll break down the differences between side-mounted and undermounted wheel bases, explore their benefits and drawbacks, and help you decide which one suits your sim racing setup best.

As the name suggests, a side-mounted wheel base is attached vertically to the sides of the simulator, typically using a frame or bracket that secures it near the seat or cockpit. This setup is common in professional-level rigs or compact racing systems. The Fanatec Podium Mounting Brackets are an excellent example of a high-quality side-mounting solution.

1. More compact setup: Side mounting often requires less depth, making it a great option for users with limited space or compact rigs.
2. Better weight distribution: Positioning the wheel base on the side can help distribute the rig's weight more evenly, enhancing stability during intense force feedback scenarios.
3. Realistic positioning: A side-mounted wheel base closely mimics the ergonomic placement of a steering wheel in a real race car, providing a more immersive experience.

1. Increased lateral force on the rig: Side mounting can create uneven lateral pressure on the rig, especially when using high-torque wheel bases, leading to slight shifts or instability.
2. Horizontal space restrictions: While side mounting saves depth, it may require more horizontal space, which could be challenging for narrower setups.

In an undermounted configuration, the wheel base is secured beneath the rig, typically on a horizontal bracket or plate. This approach is common in traditional sim racing setups and is often used with sturdy rigs and seats. The Fanatec ClubSport DD Table Clamp provides an effective undermounting option for attaching your wheel base beneath a table or rig.

1. Superior rigidity: Undermounting offers excellent stability, as the central positioning minimizes flex and enhances the solid feel during high-force feedback sessions.
2. Lower center of gravity: Placing the wheel base below the rig lowers its center of gravity, improving overall stability and reducing unwanted movement for better control.
3. More standardized mounting: Many rigs and seat frames are designed for undermounted configurations, making it easier to find compatible parts and customize your setup.

1. Requires more vertical space: Undermounting can increase the height of your rig, which may not be ideal for compact setups. A sturdy frame is also necessary to support the wheel base’s weight.
2. Harder to access: In more enclosed rigs, entering or exiting your setup can be cumbersome due to the wheel’s placement directly in front of the seat.

Both side-mounted and undermounted wheel bases offer distinct advantages, and your choice should depend on your specific needs and preferences.

• Side-mounted configurations are ideal for compact setups, providing a realistic and ergonomic feel with better weight distribution.
• Undermounted setups excel in rigidity, stability, and compatibility with stronger force feedback systems.

When building or upgrading your rig, consider factors like space, stability requirements, and how you plan to use your setup. Whether you prioritize compactness, realism, or durability, Fanatec wheel bases and accessories are designed to deliver a premium sim racing experience tailored to your needs.