Below are the GT3 and GT4 motion profiles for Assetto Corsa Competizione. The telemetry between GT3 and GT4 vehicles is so small, driver performance becomes more of a factor in relationship to sway and surge. Therefore, a general GT3 or GT4 tuning for each class can be utilized.
GT3 General Tuning - use for all GT3s - based on the 2019 McLaren 720S GT3, 2019 Porsche 991 II GT3 R, 2019 Lamborghini Huracan GT3 Evo, 2020 Mercedes AMG GT3, 2019 Aston Martin V8 Vantage GT3 and 2020 Ferrari 488 GT3 Evo
GT4 Tuning - use for all GT4s - based on the 2016 McLaren 570S GT4 and 2019 Porsche 718 Cayman GT4 Clubsport.
Platform Tuning
This motion profile was created on a PT Actuator 6DOF Simracing Platform (150mm: 7 Actuators (2 Front + 2 Rear + 2 TL + Surge). Since all motion platforms can be slightly different, please use the guidance below or utilize the quick tuning guide here for quick adjustments or the full guide here for detailed tuning information.
4 Vertical Actuator Tuning
Sway, Surge, and Traction Loss is converted into pitch or roll for platforms that do not have horizontal actuators. Since these motion profiles were created on a platform with horizontal actuators, the tuning(s) could result in excessive pitch or roll on platforms without horizontal actuators. IMPORTANT: For an axis that does not have a dedicated horizontal actuator, it might be necessary to reduce the Effect Slider for Lat G Sway, Long G Surge Accel and Long G Surge Decel, or Traction Loss by 60% to mitigate excessive movement. For example:
If no Sway actuators, reduce the Sway Effect Slider from 14 to 6.
If no Surge actuator, reduce the Long G Surge Accel/Decel Effect Slider from 17 to 7 & 15 to 6.
If no Traction Loss actuator, reduce the Traction Loss Effect Slider from 16 to 6.
MDBOX Tuning
Due to built in smoothing effects for MDBOX, it may be necessary to reduce the Effect Smoothing by 50%. Surge, Sway, and Traction Loss may require Effect Smoothing to be removed completely.
Actuator Size and Mounting
These motion profiles were created on a platform with 150mm actuators with the Front to Rear Vertical Actuator spacing at 1290mm and the Left to Right Vertical Actuator spacing at 745mm. Actuators placed closer together or are larger than 150mm will increase the angle of pitch and roll. To mitigate the increase of motion if needed, reduce the Effect Slider for the impacted effects or reduce the Max Angle.
Max Angle
These motion profiles have balanced to allow for the increase of Max Angle and Max Horizontal to 100 (unless noted otherwise). This will allow for the maximum movement capabilities of the vertical actuators. However, if less motion is desired, reduction of the Max Angle will reduce overall motion while still retaining the balanced effects.
Reverse Surge
These motion profiles were created with the surge actuator reversed. This will cause the platform to move forward when accelerating and backwards when decelerating. To reverse the surge actuator, please follow the tutorial here.
Spike Filter
The motion profiles have been tuned to a Spike Filter setting of 2700.
IMPORTANT: If you have downloaded the motion profile from the SRS Cloud Share, it will utilize your default Spike Filter settings. If you do not increase it as indicated in the motion profile, your Spike Filter may engage often and motion will feel muted.
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GT3 / General Tuning
Note: Tuned utilizing telemetry from the the 2019 McLaren 720S GT3, 2019 Porsche 991 II GT3 R, 2019 Lamborghini Huracan GT3 Evo, 2020 Mercedes AMG GT3, 2019 Aston Martin V8 Vantage GT3 and 2020 Ferrari 488 GT3 Evo on Spa, Donington, Laguna Seca and Suzuka. This tuning can be utilized as a general tuning for other GT3 or similar vehicles.
GT4 Tuning
Note: Tuned utilizing telemetry from the the 2019 Porsche 718 Cayman GT4 Clubsport and the 2016 McLaren 570S GT4. Sway and Surge Max Telemetries reduced to match performance of GT4s. This tuning can be utilized as a general tuning for other GT4 or similar vehicles.
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