QMT Features: July 2016
Pole position
Precision weighing systems help trim race-car performance

The world of motor racing is highly competitive and one of the keys to success is to manage and optimise the balance of the race car.   Mantracourt, a specialist in high precision measurement electronics, has been working with the Sébastien Loeb Racing (SLR) team to supply a weighing system that would give their cars a competitive advantage.

SLR has three Citroen Elysee vehicles entered in the WTCC (World Touring Car Championship) and for several years has been using a weighing system that attaches directly to the vehicle in place of the wheels. This concept should allow an exact and repeatable adjustment of the relationship between the suspension arms and the wheel rims and tyres. However, despite having appropriate mechanical components, users found this system to be unsatisfactory, particularly due to its lack of repeatability.

Didier Santo of Mantracourt distributor Mantra France proposed a weighing solution using industrial sensors and Mantracourt’s T24-ACMi-SA wireless telemetry acquisition modules and the T24LOG100 logging and visualisation software application. Following extensive testing by Jean Philippe Nicolao and his team at SLR, the system was accepted as it satisfied all requirements.

Mr Nicalao said: “The Mantracourt system was just what was required in terms of accuracy, reliability and repeatability. We are delighted and the system has become a vital part of our race to success.”
Mantra France is currently working to add an inclinometer, which requires a 5V DC supply and has an analogue output, inside each wheel position support point. The T24-ACMi-VA acquisition module will be ideal for this new application.
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Rob Tremain Photographer
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