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09
Sep

VSB14 Suspension Assessment

V6 Conversions approached us to perform an assessment on their front end kit for early model FX-HR model Holdens. The subframe, suspension and steering systems were all assessed to VSB14 regulations, which sets out guidelines for the loads that various components should be able to withstand, and the desired suspension geometry changes as the wheel moves through its travel.

We used various analysis methods including FEA and MBD to simulate the front end assembly. Springs, bumpstops and even flexible Nolathane bushes were modelled to achieve a high degree of accuracy. Various bump, cornering and braking forces were applied at the wheel to calculate stress levels within each component and ensure that they’d withstand the loads specified in VSB14.

The suspension was also moved through its full range of steering travel and vertical wheel travel to see how camber and toe settings changed throughout the range of motion. We made sure that these values remained within acceptable ranges and showed smooth rates of change, minimised bump steer and roll steer, all of which will help contribute to neutral and predictable handling characteristics for the vehicle.

Using simulation allowed us to perform a thorough assessment of the front end without destroying any components, as would have been the case had physical testing been used. We were also able to propose and test some design and material changes for future versions of the front end, all of which help to improve and add some engineering confidence to an already quality product.

About Brett Longhurst

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