Some of the hardest working parts on a racecar are the brakes. Formula One and Endurance racing can experience high brake disc wear and race engineers need to monitor this wear by mounting a miniature linear position sensor in the brake calliper. The sensor specified in this application is the high performance 'contactless' LT series LVDT. The LVDT sensor measures calliper piston movement. This information allows engineers to calculate disc wear at hard braking circuits. If the wear is excessive during a race the driver will be advised to ease off as exposing the cooling vanes can cause the disc to shatter. Brake calliper position measurement is probably the harshest environment for a motorsport sensor as the operating temperatures can exceed 400°C (750°F). Active Sensors design and manufacture miniature LVDT sensors with a continuous operating temperature of 200°C (400°F) and can survive excursions up to 400°C (750°F).
There are a number of calliper designs from manufactureres such as AP Racing, Brembo, Akebono and others that are designed for LVDT sensor installation. Calliper LVDT model specifications are available in our Brake Calliper LVDT datasheet. If the LVDT sensor specification you require is not shown on this data sheet, please contact our sales office for additional advice.
Active Sensors offers 'motorsport ready' contactless LVDT sensors for brake calliper movement monitoring. For bespoke applications we offer a complete design, manufacture and rapid delivery service to satisfy the fast paced engineering developments normally associated with international motorsport.