AiM

Potentiometer Pop End Fitting

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The Potentiometer Pop End Fitting used with Aim loggers measures displacement between two points using a sensor (linear potentiometer) directly connected to the measure points.      

This potentiometer can measure linear displacements like

  • Dampers compression or extension This is a good sensor to log when at the track. As, the Engineers can check to see how the suspension is performing when out on track. From this you can identify, set-up changes such as, stiffen or loosen the suspension. This change could eliminate under steer or/ and over steer.
  • Steering rotation measured through the rack displacement

Installation

When installing the sensor:

  • be very careful avoiding possible bending of the internal cylinder; these bending, occurring when over tightening the screws or in case of incorrect mounting, can seriously damage the sensor
  • extract the internal cylinder for about 5 mm (0.2 inches) from the sensor lower boundary position.
  • if you need to open the two pop joints use the black plastic clip ; images here above on the right show the clip closed on top and open on bottom. 

Please note: do not use this sensor to measure distances beyond the potentiometer maximum travel.
The car/bike linear potentiometer can be connected to any analogue channel of AiM loggers.

Aim Potentiometer CarSoftware setup – Suspensions

Once the potentiometer installed it is necessary to load it in the configuration of its logger and then calibrate/auto calibrate it.
4.1 Setup with

Race Studio 3

To load the potentiometer in the logger configuration run the software and select the configuration you are going to load it on.

Setup with Race Studio 3 Enter the configuration (in the example MXL2 03) and the related "Channels" layer.

  • Select the channel where to set the potentiometer on – in the example channel 6 (1) and fill in the panel that shows up
  • Function: "Position" (2)
  • Sensor: "Position Pot. AutoCal" (3 – this implies that the potentiometer will be auto-calibrated as shown in the following pages)
  • Fill in the other fields
  • Fill "Total Potentiometer travel" box with the potentiometer travel in mm – in the example we used a 75 mm travel potentiometer (4)
  • Click "Save"

To auto-calibrate the potentiometer:

  •  enter "All" layer and press "Device" (1)
  • select the logger – in the example MXL2 ID 410 (2)
  • in "Live Measures" layer, keeping the potentiometer in its zero position, select the channel where the potentiometer has been set – in the example channel 6 (3)
  • press "Auto Calibrate" (4)

  • Keep the potentiometer in its zero position as shown here below
  • Press "Auto calibrate All". 

• Keep the potentiometer in its zero position as shown here below • Press "Auto calibrate All".

 Dimensions

Dimensions

Potentiometer Pop End Fitting