This page controls MAIRA’s Typhoon Wind fans. MAIRA calculates fan power from iRacing vehicle motion and sends left/right commands to the fan controller. It also displays live fan power % and fan RPM reported back by the hardware.
Connection
Connect to MAIRA Typhoon Wind
Connects/disconnects MAIRA to the Typhoon Wind controller over USB serial port. The first connection attempt after MAIRA starts also scans your USB serial ports to find the fan controller, so it can take a few extra seconds. If the connection fails, MAIRA displays an error message describing what went wrong and shows a Retry button so you can attempt the connection again after resolving the issue.
Default: OFF
Connect to MAIRA Typhoon Wind on app startup
If enabled, MAIRA automatically connects to the Typhoon Wind controller during app startup.
Default: OFF
Settings
These affect how MAIRA computes fan power from vehicle motion.
Master wind power
Overall multiplier for fan power (acts like a master volume for wind).
Default: 100%
Minimum speed
Forces a minimum wind level even at very low speeds (useful if your fans stall at low PWM). Also great for those hot summer days when you want to have the fan constantly blowing even while car you car is parked.
Default: OFF
Wind curving
Controls how much wind “leans” left/right during sideways motion (slip/rotation).
Default: 100%
Fan power
This section is a speed → fan power curve editor that works in similar fashion to an audio equalizer.
Each vertical slider pair sets one point on the curve:
The speed (top value) is controlled by the left side (red) lever.
The fan power (bottom value) is controlled by the right side (blue) lever.
While you are moving the fan power slider, both fans will spin up for a preview of the feel of the current setting. It is suggested that you close your eyes, and move the slider up or down until the feel of the wind is exactly how you want it for that speed.
How it works
MAIRA computes car speed magnitude from iRacing car velocity, and finds where that speed fits among the 10 speed data points. Then, it computes fan power using Hermite interpolation between points (smooth curve instead of sharp steps).
Reset to defaults
Restores the entire speed → fan power curve to its default shape, resetting every speed and fan power data point back to the factory settings.
Fan status
Left fan / Right fan
Shows live feedback from the controller. For each fan, MAIRA shows:
- Power (%) — the last commanded fan power
- RPM — reported back from the controller
Test buttons
Test (Left): toggles the left fan to 100%
Test (Right): toggles the right fan to 100%
This is handy for confirming wiring, confirming fan direction, and verifying RPM feedback.