MIT Combat Robotics Builds Custom Axial Flux Motor for Robot Fight

Description

At NHRL Open Round 3, the MIT Combat Robotics team rolled into the arena with a bold engineering experiment and a clear question: what happens when you build a brand-new motor from scratch specifically to win a robot fight? In this match, their robot KRATOS took center stage, showcasing one of the most ambitious powertrain projects seen in combat robotics. The fight is framed as a high-stakes test of custom design, clever packaging, and raw performance under pressure, making it a must-watch for fans of robot combat, BattleBots-style action, and serious engineering creativity.

The standout feature here is the custom axial flux motor, a weapon system and drive solution that appears to be at the heart of KRATOS’s performance. According to the source description, this motor is insanely powerful, super compact, and accounts for 10% of the bot’s total weight—an impressive design tradeoff in a weight-sensitive sport where every gram matters. While the exact weight class is not stated, the scale of the build suggests a competition machine designed within a tightly regulated class where efficiency, power density, and durability are all critical. The title’s emphasis on the motor suggests that this is as much a story about drivetrain innovation as it is about the robot’s overall combat strategy.

What makes this fight especially compelling is the tension between design ambition and arena reality. A custom motor built from scratch can offer major advantages in torque, responsiveness, and space savings, but it can also introduce serious reliability risks. Fans watching this match will likely be looking for how KRATOS handles acceleration, control, and impact resistance when the weapon system is under load and the chassis is taking hits. Because the motor is described as a central project of the MIT team, the key highlights to watch are likely moments where power delivery, mobility, and robustness are put to the test—especially if the robot is forced into prolonged pushing, sudden direction changes, or repeated engagements. In combat robotics, it’s often these small mechanical details that decide whether a brilliant idea becomes a winning machine or a valuable learning experience.

This match matters because it highlights one of the most important themes in modern robot combat: innovation at the edge of what’s possible. Teams in this sport are constantly balancing aggression, durability, weight budget, and mechanical complexity, and a custom axial flux motor is a strong example of how far builders will go to gain an advantage. MIT Combat Robotics taking “a big swing” with a motor that makes up such a significant portion of the robot’s total weight underscores just how competitive and experimental the sport has become. Whether KRATOS’s approach paid off or not, the fight represents the spirit of engineering competition—testing bold ideas in a live arena where performance is measured by real impacts, not theory. That makes it relevant not only to combat robotics fans, but also to anyone interested in advanced motors, compact drivetrain design, and the craftsmanship behind modern fighting robots.

KRATOS is also set to return at NHRL Open Round 4 on Saturday, May 3, 2025, which adds another layer of interest for viewers following the team’s progress. If you enjoy seeing custom-built weapon systems, inventive engineering, and the unpredictable drama of robot-on-robot combat, this is exactly the kind of match worth diving into. Explore more robot fight videos, standout builds, and event coverage here on RobotsFight.com, where the best of combat robotics—from experimental prototypes to hard-hitting arena veterans—continues to push the sport forward.