I don’t think there’s a global maximum. For example, to beat such a robot, build the same body without the spinner motor (or, if the rules disallow that, a much

I don’t think there’s a global maximum. For example, to beat such a robot, build the same body without the spinner motor (or, if the rules disallow that, a much slower one). That gives you room to make it sturdier and/or faster. Without that heavy spinning mass it also likely will be easier to maneuver. Now, when that hits its spinning counterpart, that spinner doesn’t only dump kinetic energy into its opponent; it also dumps it into itself, potentially more so if the enemy is heavier, so on an empty battlefield, the sturdier engine will (on average) win. On a battlefield with hazards, the better maneuverability should tilt the favor more into the direction of the non- or slow-spinning version. It has more control over where and when the hits take place, so it can (statistically) push its opponent towards hazards. I think the best strategy for the fast spinner would be to try and stay working, as the jury might give it a points victory on aggression.