College of Engineering
Mechanical Engineering Department
BS in Mechanical Engineering
The following report details the full design process used by the Cal Poly Supermileage Drivetrain (CPSMD) Senior Project team in designing a new drivetrain system for the Cal Poly Supermileage Vehicle (SMV) Team. Included is the development stages of each component, the manufacturing of our parts, the final solution’s assembly, the testing of the project, and the results from the 2018 Shell Eco-Marathon Competition. After collecting data from several tests, only the final drivetrain efficiency and final sprocket alignment remain unknown. Otherwise, the project came in under budget, within our weight tolerance, and met all the other design objectives. The team was successfully able to produce a robust and reliable drivetrain system for the 2018 Supermileage car that resulted in a 4th place finish at competition. The learnings in this report provide the SMV team with a repository of information on how to build a reliable single staged drivetrain with a large gear ratio.