Brunel Racing 2009

Brunel Racing

Brunel University Formula Student Race Team

Brunel Racing consists of six masters and a selection of third year mechanical engineering students. The team has competed in Formula Student competitions every year since it was established in 1999, producing a new car every year. Taking the cars to numerous locations worldwide, including the Silverstone and Hockenheim Grand Prix circuits.

For the purpose of the Formula Student competition, students are to assume that a manufacturing firm has engaged them to produce a prototype car for evaluation, and that the intended sales market is the non professional weekend autocross or sprint racer. The design of every Brunel Racing car begins at the start of the academic year in September, with a design theme being decided upon by team management, who then offer guidance to the designers.


BR-9 was the 9th car from Brunel Racing, and competed at Formula Student competitions in Great Britain and Germany.

The main design goals of BR-9 were to make the car smaller, lighter and lower than the team’s previous car. In 2008, emphasis was placed on simplicity and reliability, rather than intricate systems deemed unnecessary by the team.

BR-9 weighs only 265kg, and its compact overall dimensions mean it can be easily transported to events, making the car an ideal choice for weekend or hobby autocross drivers.

It was designed with usability and maintenance in mind, as a result, most parts are easily serviced by the user. For example, the engine can be changed in an hour thanks to the detachable chassis rear-end. In addition to the ease of servicing, many of the car’s setup variables can be adjusted by the user. Engine parameters can also be monitored and defined via BR-9’s MoTeC ECU, by connecting a computer to the diagnostic port of the car.

Main Technical Features

The car has been tuned to produce a peak power output of 65bhp - equivalent to 245bhp per tonne, and a peak torque of 42Nm. It reaches 75mph from a standing start in 5s.

BR-9 uses a 600cc Yamaha R6 motorcycle engine, driving the rear wheels via a chain and a limited slip differential. The engine intake and exhaust are both bespoke parts designed by the team.

For optimum handling and grip, BR-9 employs double-wishbone suspension at the front and rear. Wheel camber and toe in/out are adjustable by the user, as are ride height, roll stiffness and rebound rate. Suspension springs are also easily interchangeable, as a result of the car’s centre of gravity is just below 250mm off the ground, minimising body roll.