We are working on a project by Crazyengineers.com, the
CE Bot (visit the link for more information and see Appendix for more links). While discussing the appropriate suspension/chassis design, we thought about implementing a Rocker-Bogie system inspired by the Mars Roves
Spirit and Opportunity Designs.
To get an idea on how the Rocker-Bogie design would work, I tried to simulate the construction on a free fun 2D sandbox physics simulator,
PHUN. The simulations are 2D, i.e only lateral suspention simulation is possible, cannot simulate roll and yaw.