CVJ Torque Loss Dynamometer

Author(s) Information

Malaika Sriram, California Polytechnic State University, San Luis ObispoFollow
Coleman Brown, California Polytechnic State University, San Luis ObispoFollow
Zachary Norris, California Polytechnic State University, San Luis ObispoFollow
Logan Mast, California Polytechnic State University, San Luis ObispoFollow
Chris Mattis, California Polytechnic State University, San Luis ObispoFollow

College - Author 1

College of Engineering

Department - Author 1

Mechanical Engineering Department

Degree Name - Author 1

BS in Mechanical Engineering

College - Author 2

College of Engineering

Department - Author 2

Mechanical Engineering Department

Degree - Author 2

BS in Mechanical Engineering

College - Author 3

College of Engineering

Department - Author 3

Mechanical Engineering Department

Degree - Author 3

BS in Mechanical Engineering

College - Author 4

College of Engineering

Department - Author 4

Mechanical Engineering Department

Degree - Author 4

BS in Mechanical Engineering

Date

3-2026

Primary Advisor

John Fabijanic, College of Engineering, Mechanical Engineering Department

Abstract/Summary

This report details the design and results of a dynamometer testing rig built to measure torque losses in constant velocity joints (CVJs) for Cal Poly Racing's Baja SAE team. The rig spins a flywheel connected to articulable CVJs up to 800 RPM using a motor, then decouples it and measures the spin-down rate from 800 to 100 RPM to calculate angular acceleration and torque loss. The data collected from this dyno will be used to inform freewheel packaging for future Baja car development.

URL: https://digitalcommons.calpoly.edu/mesp/863