Document Type

Undergraduate Project

Date of Degree Completion

Spring 2023

Degree Name

Bachelor of Science

Department

Mechanical Engineering Technology

Committee Chair

Charles Pringle, PE

Second Committee Member

Dr. John Choi

Third Committee Member

Mr. Chris Berkshire

Abstract

The Central Washington University RC Baja competition tests students’ skills in engineering in a matter of ability to design, construct and test an RC car. The objective of this senior project is to manufacture efficient suspension and steering systems for an RC vehicle and compete at the end of the school year against other students’ vehicles. Two races will be conducted during the competition, the RC vehicle will compete in a slalom-and-sprint and a Baja. Using more than one manufacturing method and material was expected of students to create the steering and suspension systems. Through CAD software and 3D printers most of the suspension structure was created, machining created most of the steering components and purchasing parts provided the electronics and other integral parts. All the parts were created based off common RC models and changed based on analyses of materials and forces expected during competition. Tests that the RC vehicle will be subjected to include impact, speed and angle tests to ensure the vehicle meets requirements. The first test is a drop from two feet above the ground in which the suspension arms don’t deflect more than 0.3 of an inch, passing the set requirement. The second test is driving on different terrains reaching set top speed of 20 MPH, which it does. The third test is targeted towards steering and meets the desired 60 degree turn angle for the front tires set by the requirements.

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