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Introduction

The ASME RC Baja competition is an annual competition were two teams split between Drivetrain/Chassis and Steering/Suspension will compete in a series of competitions. Such as the Baja course, drag race, and slalom time trial. The focus of this project and website will be on Drivetrain and Chassis and the process of the project as a whole from start to finish.

The Drivetrain portion is focused on providing a means of motion to the RC car. The chassis provides a structural rigid design to support all of the drivetrain, suspension, and steering components. A series of analysis and testing is done to ensure the RC car conforms to its requirements and is able to complete and compete in the ASME RC Baja competition. 

Engineering Report:

 
Fall Presentation

Video 1.1

Winter Presentation

Video 1.2

Main Design
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Image 1.1 - A rough preliminary sketch of the RC Baja Car.

Image 1.2 - An up-to-date drawing of the final assembly.

Results

Throughout rigorous testing it is safe to say the RC Baja Car surpassed its requirements. The testing process for determining each includes three key tests.  The first test focused on finding the material properties, particularly the Young's modulus (E), following ASTM standard D638. However, the results indicated a Young's modulus of 417psi, which was deemed insufficient for chassis use. The second test assessed chassis deflection under load, with five trials demonstrating exceptional resilience, deflecting only 1/8-inch under loads exceeding 250lbs, well beyond the required threshold. The final test aimed to achieve a speed of 15 mph in 5 seconds, with five trials showing the RC Baja Car capable of reaching 18 mph within the timeframe, and further modifications allowed speeds of 20 mph, surpassing the requirement. 

During the course of roughly nine months, through accurate analysis and design. This was accomplished by being meticulous about each aspect of the RC Car to ensure everything is accounted for and that analysis results yield real world results. Through precise manufacturing, making sure that each component is machined and manufactured exactly as designed to be through technical drawings following ASME's Y14 standards. Along with valid representative testing by ensuring the results of test accurately represent the requirements set in place for the RC Baja Car. The RC Baja Car surpassed all of its required aspects above and beyond. The team and myself are extremely happy with how the RC Baja Car turned out. To our knowledge this is the first 4WD and Push-Rod suspension style RC Car built within CWU. As these two goals between my partner and myself where a challenge itself within the project we are happy to say we are very proud of the RC Baja Car. 

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Image 1.3 - Chassis Deflection Test Results.

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Image 1.4 - Material Testing Results

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