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By Qubic System

QS-BT1 Belt Tensioner

$1,799.00
$1,799.00 $1,799.00
All-in price - shipping & duties included

QS-BT1 is a direct-drive belt tensioner designed to add a powerful layer of realism to sim racing by applying controlled harness tension based on in-game telemetry. Feel braking force, lateral load, wheel slip, gear shifts, and vibration effects directly through your body, with precise force control and fast response. It integrates fully with Qubic Manager (ForceSeatPM) and is built to work with a wide range of aluminum-profile cockpits.

ll international shipping, import duties and customs clearance are included. No additional import charges upon delivery.

Brand: Qubic System
Availability: Low stock: 3 left
SKU: QS-BT1-PACK-EU
Collections:
$1,799.00
$1,799.00 $1,799.00
VAT included

  • Official Distribution & Warranty

    As an authorized partner, we provide the full manufacturer's warranty and direct technical support. No gray market, no risks.

  • Seamless International Shipping

    We manage the entire logistics chain from our European warehouse to your door, utilizing professional freight handling to ensure safe and reliable transit.

  • Expert Support for Simracers

    Need help with your setup? Our team of active simracers is here to assist you with installation and optimization.

Driven by the same technology as breathtaking QS-220, QS-BT1 is a multi-purpose, dual channel, direct drive seat belt tensioner that increases sim racing immersion like no other device in its class and price range. It can complete not only force feedback offered by direct drive wheels, but also move up the level of overall experience offered by already really immersive QS motion platforms and if needed, it can even act as a standalone independent device.

Simulation of braking, lateral accelerations, high speed cornering, wheel locks and traction loss are among list of primary features of QS-BT1. Asymmetrical engine vibrations and road surface effects like rumble strips are also available for games that support them and despite being designed mainly for sim racing application, with its 200 N of force per channel, QS-BT1 can also successfully be used in flight simulators, to make you feel gigantic forces during high G maneuvers.

The QS-BT1 is a high-performance belt tension system built to reproduce the physical forces you feel in real driving. Instead of relying only on motion or audio cues, it applies dynamic harness tension driven by telemetry, adding convincing sensations for braking, cornering load, wheel slip, road harshness, engine vibrations, and more. The result is a more connected, more immersive driving experience, even if you do not own a full motion platform. Product is based on a direct-drive concept for accurate torque control and smooth force delivery. Because it is integrated into Qubic Manager (ForceSeatPM), it uses the same profile-based workflow as Qubic motion solutions, making setup and tuning straightforward. The system is designed with multiple safety layers and supports the Motion-Lock ecosystem for safe operation in compatible setups.

Installation is flexible thanks to universal mounting adapters for common aluminum-profile cockpits, and dedicated installation kits are available for selected platforms. QS-BT1 works with your own harness (4-, 5-, or 6-point) and is intended to complement your cockpit ergonomics for the best pull direction and comfort.

User manual Download Software Product Card
  • 1x Main unit (QS-BT1)
  • 1x USB cable
  • 1x External power supply
  • 2x Low friction inserts for seat belts slots
  • 1x Universal mounting adapter for aluminium cockpits with necessary hardware
  • 1x Motion-Lock jumper + interlink cable
  • 1 x Power cord (type to be chosen upon the order: EU or UK or US or AU)
Shipping to the United States

Free All-Inclusive Delivery

For this product, we offer free door-to-door delivery to the United States. The price shown on this product page already includes international shipping, export handling, customs documentation and standard U.S. import duties.

There are no separate shipping charges and no additional customs duty payment required from the customer at delivery for this product.

What is included in the price

  • Free delivery to the United States
  • International air freight / courier shipping
  • Export documentation from the European Union
  • Standard U.S. import duties
  • Customs clearance support
  • Full shipment insurance
  • Tracking number after dispatch
Processing Times

Processing time depends on product availability:

  • In-stock items: typically ship within 1–3 business days.
  • Made-to-order / pre-order items: within 1–2 business days after you place your order, we will contact you (or update your order) with the estimated shipping timeframe.
Delivery & Tracking

Once your order ships, you’ll receive a confirmation email with:

  • Your tracking number / tracking link
  • Carrier and shipment details (when available)

Please note: delivery time starts after the package is handed over to the carrier and can vary depending on your location and carrier performance.

Customs, Duties & Import Fees
  • For this product, Apex One covers the standard U.S. import duties and customs-related charges required for delivery.
  • This means the displayed product price is designed to be an all-inclusive landed price for U.S. customers. You do not need to request a separate shipping quote and you should not receive an additional customs duty bill from the courier for this product under normal delivery conditions.
  • We ship from our European warehouse using trusted international courier and air freight services. Every shipment is professionally packed and fully insured for its value.
  • After dispatch, you will receive a tracking link so you can monitor the shipment until delivery.
Important Notes
  • Address changes: If you need to update your shipping address, contact us ASAP. Changes are possible only before the order ships.
  • Split shipments: If your order contains items with different availability, we may ship them separately (when it improves delivery speed).
  • Delays: Carrier delays can happen during peak periods, severe weather, or customs inspections (for international shipments).
  • Undeliverable packages: If a package is returned due to an incorrect address or failed delivery attempts, additional shipping costs may apply.
Questions?

If you have any questions about shipping or your order status, contact us at contact@apexone.shop or use the form below - we’ll help quickly.

Specifications

Brand

Qubic system

Product type

Belt tensioner

Technical specs

  • Architecture

    2 independent channels

  • Weight

    12 kg

  • Total length

    561 mm

  • Total width

    99 mm

  • Min height

    138 mm

  • Connection

    USB

  • Motion platforms compatibility

    Qubic System QS, PS, HS

Performance

  • Pulling force

    20.5 kg, 200 N per channel

Powering

  • Power supply requirements

    4A/115VAC, 2A/230VAC

  • Average power consumption

    321W

  • Peak current for breaker specification

    Inrush current: 20A/115VAC, 40A/230VAC

Frequently Asked Questions

Does it require motion platform?

QS-BT1 is doing excellent job without any motion platform in all fields except forward acceleration sensation. If you wish to feel forward acceleration, then it is recommended to have additional equipment like motion platform or DIY Wind Sim.

Is it compatible with QS-210 and QS-220?

Yes, it is. It is compatible with all motion platforms powered by MotionSystems technology, including QS, PS and Next Level Racing® Motion Platform V3. Although for seat movers there are some limitations regarding mounting options (top frame only, close to pivot point) and it all cases QS-BT1 takes away piece of the supported payload.

Is it compatible with QS-CH1, QS-V20 and QS-S25?

Yes, it is, but additional mounting brackets are required which are not included in the standard box. More info you can find on our website in “Accessories” section. Installation kits are a dedicated solution for QS-CH1, QS-S25, QS-V20 and Next Level Racing ® Motion Platform V3.

Is it compatible with PS-6TM-xxxx and PS-6TL-xxxx?

Yes, it is, but custom made mounting brackets are definitively required because PS motion platforms do not come equipped in standardized cockpits.

Can I install QS-BT1 behind the seat at my shoulders height?

Technically yes, but there are some limitations and virtually no benefits: – When you have a static rig, it does not really matter, but for all rigs that utilize motion platforms, it is always recommended to keep Center-Of-Gravity as low as possible, therefore QS-BT1 should be installed to the rig, not the seat. – For seat movers, it is not allowed as it would increased moment of inertia drastically. QS-BT1 must be installed to the top frame as close to pivot point as possible, to keep moment of inertia in check. – Installation location does not really affect if belt pull your shoulder down or back, as it is purely determined by your seat model.

Does it come with integrated belt?

No, there is only short section of belt coming out of QS-BT1 which you need to attach to seat belt of your choice. For example, for 4 points seat belt you attach the seat belt to your cockpit in 4 points as you normally do (A on the drawing), and then you attach QS-BT1 to the rear section of the seat belt (B on the drawing). This approach guarantees that safety features of your seat belt are not compromised by QS-BT1.

Do I need 4-point, 5-point or 6-point seat belt?

In theory, 4, 5, and 6-point are all good, but we are doing most of our testing with a 5-point seat belt (3 in. width) because they are pretty popular. 4-point, depending on body type, might travel upwards during a game session. For 5-point and 6-point seat belts, make sure that the bottom-middle mount is placed correctly; otherwise, you might feel the tension between your legs instead of on shoulders.

Will QS-BT1 pull me back or down?

The direction of the pull depends only on the seat belt slots position against your shoulder. As long the slots are at the right height, you will be pulled back. QS-BT1 comes with low friction inserts for the seat belts slots that reduce the friction (so you are pulled back, not the seat down) and with low friction bridge that might help you to adjust the rotation point height and compensate odd seat belt slots shape.

How do you prevent the system from pulling too hard and hurting the use?

The necessary safety factors were included at each level of the design and they include, but are not limited to: – selection of appropriate motors and power supply which combined generate enough pulling force but at the same time difference between nominal voltages prevents motors from spinning too fast – selection the right amount of pulling force, which on the one hand is high enough to generate necessary sensations, on the other hand, it is still safe for humans – implementation of our dual-channel self-testing Motion-Lock system that allows to link QS-BT1 to single fully integrated Motion-Lock circuit together with various models of QS motion platforms and QS-DD-20 – implementation of additional software watchdogs that add yet another layer of safety over hardware solution

What capabilities/effects are supported for racing simulators?

If game provides necessary data, then the full list is as follows. Please note that this might change upon release: braking, lateral accelerations, centrifugal force during cornering, wheel slip and wheel lock, rev limiter, engine vibrations, gear change, side slip, traction loss, oversteer, vertical g-force, road harshness, pre-impact protection.

Why direct-drive instead of gearbox based solution?

The direct-drive is not there to have more pulling force, actually with gearbox you can usually achieve higher numbers, but to have better control over torque (and in the result force). With gearbox (planetary or even ball screw) in the middle, using motor current to estimate force on shoulders becomes a challenge, which can be solved usually in a two ways: – The force applied to the shoulders is calculated from output shaft position (to be precise, from arm angle) meaning that the force on the shoulders is not controlled directly, rather the motor tries to rotate the output shaft to calculated position with specified torque limit. – There is an additional sensor installed that measure the force (tension) of the belt and control algorithm adjusts arm angle and motor torque to generate specified force (tension) on the belt. Both solutions include some kind of gearbox that introduces backlash and unwanted static resistance. Additionally the second one needs additional sensor mounted somehow between the arm attached to the output shaft and the belt. The control loop is pretty long, with many components that needed to be taken into account and even describing how it works is a challenge itself, as you can tell from this description. If you compare it with direct-drive solution, whose principle of operation is the same as in steering wheel, it is like a night and a day. There is no backlash that eliminates fine details, there is no need for additional force sensor nor startup position calibration, the motor torque is directly proportional to force on the shoulders (minus friction and a few other factors) and system it is fully reversible (you don’t need to fight against the gearbox). The control loop is much shorter and looks exactly as in the steering systems. All above is not just a random theory from the Internet, we are talking from our own experience. QS-BT1 took more than a year to be developed and we actually tied all motioned solutions and in the end we went with the technically the best direct-drive system that uses the same technology as in QS-220 and QS-DD-20, but appropriately suppressed (with help of physics laws) to make it safe in use in the seat belt tensioner application.

What does it mean that QS-BT1 is plug and play?

It means that just a few steps (8 to be exact) are required to fully enjoy the product and no specialized IT knowledge is required to configure the system and PC. 1) attach QS-BT1 to your cockpits. 2) attach seat belt of your choice to QS-BT1 – be aware of limitations 3) connect power source 4) connect USB cable 5) connect Motion-Lock circuit 6) turn on the system 7) download and install ForceSeatPM/QubicManager 8) start a game. If the game has to be configured first, ForceSeatPM/QubicManager will do it for you.

Does it work with Xbox Series X/S or Playstation 5?

It is currently possible to use the QS-BT1 with Gran Turismo 7, but a Windows PC is required to intercept telemetry data and to control the QS-BT1 DISCLAIMER: Support for this game is provided on an AS-IS basis and may cease in the future if GT7 stops providing telemetry data.

Does QS-BT1 work with motion platforms and accessories made by 3rd party company?

Yes, it does. For most games is seamless but even if the game sends telemetry data only on single UDP port, then ForceSeatPM/QubicManager is equipped in UDP data forwarding module that will solve the issue.

Can it be controlled from SimTools, Sim Racing Studio or SimHub?

No, QS-BT1 is designed to work only with ForceSeatPM/QubicManager and carefully crafted profiles created individually for each of the supported games.

What games are supported?

You can find a full list of games that are supported by the QS-BT1 at this link Supported Games