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Bump steer was characterized using mates of an assembly between the upright and steering system.
The upright was moved up or down to simulate moving past a bump
The centerlink was moved 90mm to simulate the largest angles the wheels would be allowed to turn at
The above chart is used to compare the difference in wheel angles when a bump is encountered vs the upright at a neutral position
The spindle face was measured against the right plane to obtain measurements
As can be seen, the difference in wheel angle is trivial
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