Document Type

Undergraduate Project

Date of Degree Completion

Spring 2024

Degree Name

Bachelor of Science

Department

Engineering Technology

Committee Chair

Charles Pringle, PE or Dr. John Choi

Second Committee Member

Charles Pringle, PE or Dr. John Choi

Third Committee Member

Mr. Chris Berkshire

Abstract

Students attending Central Washington University teamed up to manufacture an RC car to compete against peers in the RC Baja competition events as a senior project. The project was split between the two individuals, Rogelio was responsible for the steering and suspension, while Roberto was responsible for the chassis and drivetrain. The team collaborated to brainstorm ideas that would fit the requirements applied.

The RC was built with 3D printed parts and designed using engineering methods such as mechanics of materials, dynamics, and statics to successfully compete in the BAJA events and meet requirements. Before it was ready for competition, the RC underwent various tests, and the team was able to gather data to compare it to the calculated data. The slalom competition and straight-line sprint race reflected the performance of the RC’s drivetrain, suspension, and steering as it worked in unison with the chassis. The final competition put the entire project to the test against the rest of the competitors.

The suspension was expected to compress 0.5,” but it only compressed 0.25.” The steering radius was expected to be 4 feet, but it was recorded as 6 feet. In addition, the steering range was expected to be 60 degrees and the team recorded 70 degrees of range. The 3D printed components were required to not bend more than 0.1” and they were recorded to bend 0.07”. Instruments and manufactured jigs were used to take measurements.

Keywords: RC, suspension, drivetrain, 3D printed

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