This is one of our friction drive modules. We attached an aluminum plate to each wheel and run a drive wheel up against the plate, driven by a Cim and Banebot transmission. Four wheels are attached through linkages to give us 4-wheel drive, 4-wheel steering.
We ran successfully at the DC Regional, and will run again at the Chesapeake Regional. Come by our pit and check out a spare unit that will be on display.