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Results
Full Report
Test 1- Ground Clearance
The unloaded, stationary ground clearance of the EV was 4.4”. This value was a good predictor that the EV would clear the 1.5” requirement without issue. The results from the test confirmed the prediction. Seen below in fig.5, the operational clearance for each motion was above 4” at the EV’s lowest ride height.
Test 2- Camber Deviation
The previous suspension design allowed for a maximum camber angle deviation of 3.4 degrees. This was attributed to the lack of an upper support for the spindle. The new design added an upper support and was predicted to stabilize this deviation greatly. The new suspension design only allows for a maximum deviation () of .6 degrees. Well below the required maximum of 1 degree.
Test 3- Adjustability
The minimum preload deflection upon loading was .6” . The maximum preload deflection was only .3”, meeting the requirement factor of ½.
Results Discussion:
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The tests have shown that the Cat-Mobile Ev front suspension has performed as required and further optimization can be considered. Each test was performed without issue despite the COVID-19 adjustments needing to be made. The mass added to the vehicle was well below the target maximum of 25lbs. at only 12.2lbs. . The maximum camber deflection is well below the 1 degree maximum at only .6 degrees. This has increased maneuverability, stability, and safety of the EV. The suspension has shown that it will be well suited to the racing environment and will be able to be adjusted and tuned to the preference of the operator.
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