Some good guesses in this thread, but no one is quite right.
Our robot has undergone multiple weightloss programs so a lot of this is ‘optimized’ to be a light/strong as possible. We are running PC directly on anodized aluminum as a “bushing” with a smidge of grease. All of the stubby dead axles allow us to fully clamp through the axle stack with a bolt. The only crossmembers between the side linkage sides are the 1/16"wall 3" diam front roller and the 1/32" wall 1" diam back roller. (full intake-width dead axles are too heavy//not weight efficient.)
Cheers,
Bryan
