Editing Robot-sumo (section)

=== Mechanics ===
The [[Mechanical engineering|Mechanics]] consists in the infrastructure that supports and accommodates all the components and systems of the sumobot, including [[Engine|motors]], [[Wheel|wheels]], [[Printed circuit board|PCB]]'s, [[Sensor|sensors]], among others.

A standard sumo robot is wheeled driven robot with a locomotion system. The locomotion system usually consists of driving motors with a coupling system to the wheels, which usually employs a [[Reduction drive|reduction drive system]] to shift the output speed. [[Brushed DC electric motor|Brushed DC motors]] have been the most employed ones, <ref name=":10" /> but there are also robots with [[Brushless DC electric motor|brushless DC motors]].<ref name=":14" /> Motors from [[Maxon Group|Maxon]] or [[:de:Faulhaber_(Unternehmen)|Faulhaber]] brands have been popular choices among highest level competitors,<ref name=":10" /> such as robots in the All Japan Robot-Sumo Tournament.

Another commonly employed design for a sumo robot is an angled [[wedge]]/[[Inclined plane|ramp]] in the front of the body. This wedge is usually coupled with a [[blade]] with the purpose of invading the opponent from below and lifting it, so it becomes easier to push it out of the arena. <ref name=":10" />

For Mega Sumo robots, since magnets play an important role in the dynamics performance, the chassis are usually designed to support the desired number of magnets. A builder might choose between a heavier or a lighter robot based on the number of magnets allocated.<ref name=":9" /><ref name=":0" />

Some robot designs also employs peripheral mechanisms. Though classes have dimension limits, they are usually limited to the start of the fight, and once the fight starts, the robot is allowed to expand its size. <ref name=":4" /> Examples of these mechanisms are side flags <ref>{{Cite web |title=Matador Flag System Robot Upgrade Parts Jsumo {{!}} JSumo.com |url=https://www.jsumo.com/matador-flag-system |access-date=2025-01-03 |website=www.jsumo.com/ |language=en}}</ref> and side wedges,<ref name=":26">{{Cite web |title=Instagram |url=https://www.instagram.com/p/DCXbhKVBDUd/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA== |access-date=2025-01-03 |website=www.instagram.com}}</ref> which are usually activated with actuators other than the driving motors.
[[File:Galena Sumo3kg ThundeRatz.jpg|thumb|Mega Sumo Galena, from ThundeRatz <small>[<nowiki/>[[:pt:ThundeRatz|pt]]<nowiki>]</nowiki></small> ([[Polytechnic School of the University of São Paulo|Poli-USP]]), is an example of robot with side blades.<ref name=":26" />]]