We will follow these rules: http://robogames.net/rules/all-sumo.php
Signup form for 2018: (coming soon)
Double elimination tournament
Main rule is Sumo has to be <10cm by 10cm and <500g
The ring we will use is made of MDF painted FLAT BLACK with a GLOSS WHITE border ring. The rubber surface of the last ring was just to hard to source, build, maintain and paint. It is at LVL1 so you can test your bot anytime.
Zumo - http://www.pololu.com/category/129/zumo-robot-and-accessories These are excellent kits and well supported. Arduino based.
Parallax $240 - Comes with 2 bots. Kit works well, but expensive http://www.parallax.com/product/27402 and http://www.amazon.com/Parallax-SumoBot-Competition-Serial-Adapter/dp/B004SRZLZU
Sumovore Mini Sumo $98.50 http://www.solarbotics.com/products/k_sv/
Mark III $92 http://www.junun.org/MarkIII/Store.jsp (not sure these folks are still in business)
TAB Sumobot http://www.amazon.com/SUMO-BOT-Remote-Controlled-Programmable-Sumo-Bot/dp/0071411933 (never seen this in action)
JSumo kit - new for 2016 but expensive $310 https://jsumo.com/shop/predator-mini-sumo-robot-kit-full-kit-not-assembled/ Will you be the first to fight this one?
Fingertech Cobra - https://fingertechrobotics.com/proddetail.php?prod=ft-cobra-chassis I have had my eyes on this one for a while.
Gallery of Sumobots
Nice Bot, but not a Sumo
Another Arduino Sumo
Sumo from Tufts Univ
Thingiverse of above sumo http://www.thingiverse.com/thing:1548
Check this one out http://www.huv.com/miniSumo/seeker2/
And another one http://letsmakerobots.com/node/19648
What about Legos? http://www.nxtprograms.com/mini_sumo/index.html
Please add your own!