This report gives the information required to design a functioning steering system for a small, open-wheel racecar. Specifically, WashU Racing's WUFR-19 steering system, which focuses on the drivability of the car. This goal is shared throughout the WashU Racing team for the 2019 design cycle. To achieve this focus on vehicle control, the WUFR-19 steering system implements two universal joints to transfer torque from the driver to the KazRack steering rack, another WashU Racing first. From the steering rack, the force is transmitted along the tie rods and into the rotation of the wheels by way of the steering arm. The steering arm geometry was designed with a goal with 75% Ackermann, or an inside wheel turn of 33° and an outside wheel turn of 25°. The final design is now fully functional on the WUFR-19.
Mechanical Engineering and Material Sciences Independent Study
Date of Submission
McRae, John and Potter, James Jackson, "Design Considerations of an FSAE Steering System" (2019). Mechanical Engineering and Materials Science Independent Study. 94.