Qubic System QS-BT1 Direct Drive Seat Belt Tensioner with Trak Racer Seat Harness

QS-BT1 Dual-Channel Seatbelt Tensioner

Product Overview

The Trak Racer QS-BT1 is a high-performance dual-channel seatbelt tensioner engineered to simulate the real-world forces experienced in motorsport and aviation. From heavy braking and cornering G-forces to engine vibration and gear shifts, the QS-BT1 delivers responsive, immersive feedback that motion platforms alone can't match. Built for sim racing and flight sim enthusiasts who demand uncompromising realism.

Key Features

• Dual 200 N direct-drive motors (400 N combined force)

• Seamless integration with all Trak Racer and Motion Systems–powered platforms

• Compatible with racing sims, flight sims, and open-source WindSim projects

• Simulates braking, lateral Gs, gear shifts, road texture, and more

• Offers unmatched realism in sustained forces, gear transitions, and vehicle behaviour

• Advanced safety features including dual-channel self-test and Motion-Lock compatibility

Technical Specifications

Immersive Simulation Features

Braking Feedback

Experience the full weight of braking forces as the QS-BT1 dynamically tightens the seatbelt, giving physical feedback that mirrors real-world deceleration.

Advanced Steering Feedback

Dual voltage channels provide precise force during high-G cornering. The QS-BT1 reacts in real time, simulating lateral overloads as you hold a racing line or fight for control mid-drift.

Engine & Road Vibration

Feel engine pulses, kerb strikes, and shifting road textures through your harness. The QS-BT1 accurately reproduces surface changes and power delivery across supported titles.

Gear Shift Realism

Each gear change triggers a responsive belt tug, simulating the shift jolt experienced in high-performance vehicles.

Cornering G-Forces

As you swing through fast turns, the QS-BT1 simulates centrifugal force by adjusting seatbelt pressure, helping you intuitively feel the apex load.

Flight Simulator Integration

Supports G-force simulation across vertical and lateral axes. Simulates positive/negative Gs, weapon recoil, flare deployment, and throttle transitions with precision.

Why It Matters

Motion platforms excel at short-burst effects but struggle with sustained Gs. Even high-end 6DOF setups can’t match the prolonged physical load of a 200 N channelled system like the QS-BT1. By combining the two, you unlock layered realism: your motion platform handles the dynamic movements, and the QS-BT1 delivers the sustained physical forces your body expects.

Trust & Safety

• Designed with voltage protection and speed-limiting logic

• Force output tuned for immersion and user safety

• Compatible with integrated Motion-Lock circuits (QS-DD-20, QS-220, QS-V20)

• Optional external Motion-Lock switch supported with accessory

Supported Effects (Racing)

• Braking

• Lateral G-forces

• Cornering centrifugal force

• Wheel skid / lock

• RPM limiter

• Engine vibration

• Gear shift

• Oversteer / traction loss

• Road roughness

• Pre-impact simulation

Supported Effects (Flight)

• Positive & negative G

• Deceleration / braking

• Banked turns

• Cannon/missile discharge

• Flare deployment (where supported)