Direct drive wheel base: what it is and why it matters

Gear drive

The motor drives the wheel through gears. It’s the oldest and cheapest design. Logitech G29 and G923 use this approach.

The upside is price. The downside is that the gears add resistance and artifacts that aren’t in the simulation; you feel the drivetrain, not the track. Fine detail is limited, and quick steering inputs can feel notchy.

Typical torque: 2–3 Nm.

Belt drive

A belt transfers rotation from the motor to the wheel shaft. It’s the step up from gears and is used by wheels like the Thrustmaster T300 and parts of Fanatec’s lineup.

Smoother than gears. Quieter. But the belt also filters information; sharp transients (kerbs, lockups, weight transfer) get damped before they reach the wheel. It’s like listening to music through a layer of insulation.

Typical torque: 3–8 Nm.

Direct drive

The motor shaft IS the wheel shaft. Nothing in between. Every signal from the simulation reaches your hands without drivetrain filtering.

That’s why you can feel kerbs, weight shifts and small changes in surface texture. Force feedback becomes information, not a vibration trick.

Direct drive motors commonly deliver 5–25 Nm. The Simagic Alpha EVO Sport in our Stage 1 delivers 9 Nm. The Moza R21 in Stage 2 delivers 21 Nm.

A common misconception is that more Nm is always better. In practice, real steering effort in a road car with power steering is roughly 3–6 Nm. So 9 Nm is already enough for realistic steering feedback with headroom. 21 Nm gives you more margin for stronger effects and more low-frequency detail, like the sustained load in a heavy GT car through a long, slow corner.

What it feels like in practice

The difference between gear drive and direct drive isn’t subtle. It’s like going from laptop speakers to studio headphones; not just louder, but more information.

Belt drive to direct drive is a smaller jump, but still noticeable. Turn-in detail, the exact moment the front tyres start to wash out, the feel of ABS; everything gets clearer.

That’s why direct drive has become the baseline in serious sim racing setups, from hobbyists to professionals. It’s no longer a premium feature; it’s the default.

What RaceLoop uses

All three RaceLoop stages use direct drive.

We don’t sell gear-drive or belt-drive bases. Not because they don’t work, but because we deliver complete systems where every part matches. In that context, direct drive is the only technology that does the rest of the rig justice.

Should you upgrade to direct drive?

If you’re on a gear-driven base (Logitech G29, G923) and you’re thinking about upgrading, yes. It’s the single biggest improvement you can make. Bigger than a better screen. Bigger than a new chassis.

If you’re on a belt-driven base (Thrustmaster T300, Fanatec CSL), it’s more nuanced. You’ll gain detail and precision, but the jump is less dramatic. Consider upgrading pedals first if you’re still on potentiometers.

If you’re starting from scratch: go direct drive immediately. The price gap to belt drive has shrunk to the point where compromising rarely makes sense.

Common questions