This guide will cover the basic functions and tuning of the TensionR Active Belt in Sim Racing Studio. Topics include:

Intro to TensionR Active Belt Tuning

Active Belt Tuning Page Features

Belt Switch and Belt Calibration Keyboard/Buttonbox Shortcuts

Active Belt Tuning Primary Functions

Body Position During Calibration

TensionR Belt Locking Mechanism and Release

USB Voltage Isolator Belt Loops


Advanced Troubleshooting

Additional Resources 

3D Printed Belt Guides and Clips

IMPORTANT: Use the TensionR Active Belt Setup and Troubleshooting Guide here to initially setup and troubleshoot the TensionR Active Belt prior to tuning.

Intro to TensionR Active Belt Tuning

The TensionR Active Belt provides an immersive experience through your seat belt by feeling the belts tighten when you brake, feeling the g-forces push you into the left or right belt as you corner quickly, feeling the pressure in the belts as you go over a jump simulating you body flying into the air. It's an incredibly immersive experience that provides a sustain feeling of braking, cornering, and jumps. 

Active Belt Tuning Page Features

To start active belt tuning, launch Sim Racing Studio 2.0, select TUNING at the top and then Active Belt in the left column. 

Helmet Icon: When a game has been launched or a tuning has been selected in the Profile Manager, the Helmet icon will be select-able if a SRS Pro Tuning is available. This will allow you to quickly load Pro Tunings from different SRS tuners if you have a Premium Subscription. 

Calibrate Belt (Target) Icon - Will immediately begin calibrating the TensionR Active Belt. 

  1. Make sure you are wearing your belt before proceeding. 

  2. You do not need to tighten the shoulder part, leave it a little loose on the shoulders (~3 fingers).

  3. To loosen your Belt, make sure the Belt toggle switch on the right side of SRS is set to OFF. Once that switch is ON, Belt will not move when pulled by hand.

  4. If it’s OFF, you can pull the belt (pull hard) to move it to adjust it prior to calibration. 

  5. You can control calibration power and retraction in the SRS Setup -> Hardware page.

  6. Make sure the stoppers on the belts are not hitting the top of the TensionR. If they do, adjust your seat height.

Keyboard Icon: A keyboard shortcut can be set here to for the Belt Switch and Belt Calibration which is critical to utilizing the TensionR Active Belt. See the section below "Belt Switch and Belt Calibration Keyboard/Buttonbox Shortcuts" for information on setting up these shortcuts. You can also setup shortcuts for all the tuning features on the Active Belt tuning page. 

Gear Icon: A shortcut link that will take you directly to the SETUP page in Sim Racing Studio. 

Shopping Cart Icon: A shortcut link that will take you directly to the Sim Racing Studio webstore. 

Belt Switch and Belt Calibration Keyboard/Buttonbox Shortcuts

To ensure safety and optimal immersion, Sim Racing Studio requires you to calibrate the TensionR Active Belt EVERY TIME you enter a game. This will ensure the TensionR Active Belt is tuned specifically for the person using it. In addition, SRS defaults the TensionR Active Belt to OFF when first launching SRS to ensure there is no belt movement until it is calibrated. Note: Turning the TensionR Active Belt OFF then ON via the SRS toggle switch or keyboard/joystick short cut will automatically request that a belt calibration is done. 

It is HIGHLY recommend you immediately create keyboard or button-box/joystick button shortcuts due to having to switch on the TensionR every time you load SRS as well as needing to calibrate the belts often. The two functions needed are 1) Belt Switch and 2) Belt Calibrate. 

To create a keyboard/joystick button short cut, follow the steps below:

  1. In Sim Racing Studio, go to TUNING > ACTIVE BELT.

  2. Click on the keyboard icon on the top right of the screen.

  3. Select the 'Type' drop down box and select 'Belt Switch' 

  4. Program the Keyboard and/or Buttonbox (joystick button) you want for that function. For the keyboard button, simply press the button(s) on your keyboard and click Confirm. For the Buttonbox/Joystick shortcut, press the appropriate button and click Confirm. 

  5. Click Save in the upper right of SRS

  6. Repeat from step 2 to program another shortcut for 'Belt Calibrate'

Active Belt Tuning Primary Functions

STATUS - Enables or disables the specific axis (Surge, Sway, or Heave) from moving the belts. 

REVERSE - For Sway and Heave, the belts will tighten when the opposite telemetry (positive or negative) occurs. For example with Sway, when you are turning left, the right belt will tighten simulating you are being pushed to the right by g-forces (ie. being thrown off the corner). Turning Reverse to ON will change the side of the belt tightening and you will now feel the left belt tighten when turning left instead. 

For Heave, when you are launching off a jump in rally racing, the belts will tighten simulating that your body is floating up leaving the chair due to positive heave telemetry. Turning Reverse to ON will only tighten the belts when you land as the vehicle compresses (represented as negative heave telemetry). 

SURGE, SWAY, and HEAVE SLIDERS - Determines how STRONG the belts will pull on that axis. Default setting is 10. Increase the slider towards 20 to increase the strength of the pull from the belts. Lower the slider down from 10 to decrease the strength of the pull from the belts. 

SURGE SMOOTHING, SWAY SMOOTHING, and HEAVE SMOOTHING - Determines the amount of smoothing applied to the telemetry for Surge, Sway, or Heave. Smoothing is the ability to average telemetry over time that helps to reduces telemetry spikes, telemetry gaps, or other issues with telemetry that tend to cause jerky motion/pulling in the belts 

NOTE: Effect Smoothing ONLY works in increments of 5. For example, 5, 10, 25, 40, 60 are all valid Smoothing Effect settings. If you set a slider between an increment of 5, it will only use the lower value (ie. if you set the slider to 7, it will only register as a 5). 

WARNING: Be careful when applying a large amount of Smoothing beyond the defaults of 15. Smoothing will average out telemetry overtime to smooth it out. The higher the Smoothing slider setting, the farther back it averages out the telemetry to remove spikes. This can easily cause small telemetry changes such as some heave jumps, sway for quick corners, or even a latency in feel for surge when braking. Smoothing should only be utilized to fix issues with motion of the belts when they don't feel smooth. 

Body Position During Calibration

Your positioning in the seat during calibration can impact the feel of the TensionR Active Belt. In order to have a consistent feel in tension from the belts, you should always use the same position and pressure when sitting back against the seat during Calibration. A relaxed normal driving position with the belts it recommended.  

If your back is not pressed against the seat during calibration, the belts might have additional slack that will cause the belt profile to feel looser than normal. In addition, if your back is pressed extremely hard against the seat during calibration, the belts might feel tighter than normal. 

TensionR Belt Locking Mechanism and Release

The TensionR Active Belt uses a 5-point harness. One of the lap belts will have the belt locking mechanism permanently attached. The other 4 belts (crotch, lap, and left and right shoulder belts) are connected to the belt locking mechanism after you are seated on the platform. Once all belts are connected, proceed with the SRS calibration process.

  • When connecting the belts, ensure the locking mechanism lever is pointed up or down (depending on how you installed the locking mechanism belt). This will ensure it is reset and ready to accept the belts. 

  • When releasing the belts, rotate the locking mechanism all the way towards the side of the seat that has the belt with the belt locking mechanism. There will be a click sound/feeling and all 4 belts will disconnect leaving the locking mechanism lap belt still connected. 

  • Remember to reset the locking mechanism by moving the lever to be pointed up or down (depending on installation) so it will be ready to lock the belts into place the next time you use the TensionR Active Belt. 

USB Voltage and Noise Isolator

Since the TensionR can utilize a large amount of voltage to drive the belt motors, it is recommended to use a USB Voltage Isolator to prevent any potential voltage spikes from traveling back along the USB cord. A USB Isolator will also reduce noise in the circuit to help avoid any EMI issues. 

Example USB Isolators include the following:

  • Recommended: COMMFRONT Industrial USB Isolator, USB 2.0 5000Vrms Isolation (per UL 1577), Low and Full Speed Data Rate: 1.5Mbps and 12Mbps, Plug-n-Play, No Drivers Required (Recommended) which can be purchased here.
  • Sinkr USB Isolator Module ADUM3160 USB to USB Voltage Isolator Module Support 12Mbps,Used to Isolate Noise in Circuit System which can be purchased here.


Belt Loops

Below are images of how the TensionR belts loop in the retainer if reattachment is necessary.