TinyCross: Ice Racing + Next Updates

Earlier this year, I got to do some TinyCross ice racing on a frozen lake:Thanks to Dane for organizing the event; there were over a dozen crazy ice vehicles. TinyCross wasn't the fastest, but the combination of four-wheel-drive, independent suspension, and traction control really helped it get off the line quickly and pull itself through ruts left in the slushy surface layer by other vehicles. Overall, even though I didn't consider ice as a potential surface when designing this kart, it is surprisingly well-suited for it.I participated last year, too, but after a couple runs, one of the rear motors was defeated by the slush. Either its position sensor failed (due to exposure to the elements, no doubt!) and caused it to lose sync, or another motor's sensor failed and the remaining one had to take up all the torque. Either way, the winding insulation melted quickly - the APS 6374-170KV motors can handle 100A peak, but not continuous. This was the main motivation for the rear motor…