Aim Magnetic Speed Sensor

The Aim Magnetic Speed Sensor is an immediate upgrade to your Aim set up, and there are many different connections that can be made using the Aim Magnetic Speed Sensor. For example, the plastic connector will suit the EVO4 Data Loggers whilst the metal connector suits the MXL (Strada), MXG, MXS and MXP.

The Aim Magnetic Speed Sensor is a vital component in motorsports acquisition, providing highly accurate, non-contact measurement of rotational speed, which is then used to calculate vehicle/wheel speed. The system is made up of 2 parts: The non-contact sensor and also a trigger magnet. It can be mounted to a fixed part of the vehicle using a bracket, and the trigger magnet is mounted to the rotating component you wish to measure, such as the wheel hub or brake disc. As the wheel or driveshaft rotates, the trigger magnet passes directly in front of the fixed sensor. This movement makes the magnetic field that is detected by the sensor change. Due to the magnetic field change, an electrical voltage pulse in the sensor’s coil is induced. The faster the wheel spins, the more frequent the pulses.

The pulses received over a specific time interval are then counted by a connected Aim Dash Logger. It must be calibrated by telling it the rolling circumference of the tire and the number of magnets used on the rotating point. The formula “Speed = Pulse Frequency x Tire Circumference/Number of Magnets” is used. Then the Logger changes this into a precise speed measurement for display and/or logging. This setup allows for an accurate wheel speed, which is a crucial add-on for analysing your performance.