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Torsional Stiffness Test Rig

UW Formula Electric · Aug 2026

A rig I designed and built to twist our Formula SAE chassis under a known load, so we could measure its real stiffness and check our Ansys model against it.

Our car's chassis set up on the rig
The finished rig: chassis mounted, weight plates hung from the loading arm
Mounting the frame on the rig
Dial indicator measuring frame deflection at the front left
Hub adapter and dial indicator at the front right
Dial indicators used in test
Weight plates used to load the arm
Milling rig parts
Welding the rig
Cut parts at the saw station, ready for welding
Adjustable dummy dampeners for test
Hub adapter plate on its rod end
3D-printed jigs for welding

Our car's chassis set up on the rig

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Tools: SolidWorks, Ansys, Machining, Welding, Excel

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