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Suspension Geometry - Iterative Computations

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The WinGeo3 program can perform interative suspension computations over a range of vehicle positions.  Here the two suspensions are compared over a range of ride height from –2 inches (bump) to +2 inches (droop) with a calculation every 0.1-inch.  The Graphical Analysis Package (GAP) display shown below compares Camber, Scrub, RC height and RC-CG moment arm over this range of motion.  This display shows that camber and scrub are similar until the vehicle gets near the far end of the range of motion.  But the moment arm values are quite different with the second suspension having a nearly constant moment arm. This shows how a change in the length of the Upper A-Arm can produce roll center control.

The GAP software used in this application is also used in the Debrief3 data acquisition program.  The display capabilities are similar to those of any data acquisition program.