Fórmula Student

EST FSR01 Prototype

Our first prototype has a tubular chassis in a Spaceframe type made with cheap steel (ST35). The final prototype is being built in Chrome Molybdenum Steel - 25CrMo4 – because of its high stiffness we can decrease the material amount and therefore the weight. It was designed using CAD software (Solidworks, Cosmos and ANSYS) and of course, using the knowledge achieved during lectures. The structure will be paint with an anti-corrosive care and the welding process to be used will be the TIG (Tungsten Inert Gas). Final weight: n / d.

The power unit comes from a Suzuki GRX-R600 (2002), has 599cm3, a compression ratio of 12,2:1, develops 106bhp at 11.800rpm and 50lb/ft of torque at 10.800rpm. It’s a robust engine with good cooling and lubrication systems, excellent quality materials that stands high pressures, speed and flow. According to the regulations, all of the engine intake air must pass through a circle restrictor with 20mm diameter, which reduces a lot the power. Therefore, we decided to design a turbo-compressor system in order to recover the power and define the power and torque lines, adapting them to the characteristics of the demanding circuits in the competition.

The Suspension system is push-rod in the front and pull-rod in the rear, and independent A-arms in each wheel. This type of suspension is normally used in cars made specifically for the competition just like the formulas. The spring-damper set used it comes from a Lotus Elise and it allows many adjustments, such as low bump, preload of the spring and rebound.

All the electronics of the car will be developed by students, except the main electronic control unit (ECU). The main control unit chosen is a DTA P8 Pro version 3.0A, which is the brain of the CAN-BUS system. We already developed a live data acquisition device (with telemetry included) and a communication protocol between the pits and the car. With all the data available from the sensors and a bigger knowledge of the car during riding sessions in the track allows improving the vehicle set up. We are also building a multi-function dashboard fully electronic that will provide the driver all the information about the car, replacing the original of the motorcycle (analogical).