Sumo Wrestling Robots
Event Coordinators: Ed
Description of the
Students design and build
a robot following the guidelines listed below. In the
contest, two radio controlled robots face each other in
an 8ft circle and try to push/bang/smash the other robot
off of the circle. Winners will be determined through
INSPECTION PRIOR TO
It is the responsibility
of the teacher to bring in all Sumo Bots from the
participating school the morning of the competition at
GCC for the inspection process. Inspection will include
weigh in on the coordinator’s approved scale.
Sumo Bots will be secured after inspection at the
competition site until the start of the event. DO NOT
bring the remote controllers to the inspection.
Students will bring controllers with them directly to
the competition site.
Two minutes per match.
One point for pushing
opponent out of circle. Highest score wins.
Ref will determine “off
of the circle”.
Scorer will keep
Timer will keep time,
and stops the clock while resetting Wrestlers.
You must handle your
Start at the two lines
facing each other. One foot apart.
NO “time outs”.
You must be ready to compete, a full match, when
called by officials.
Robots: If a machine becomes disabled during the
match, for whatever reason: i.e. dead battery,
unplugged receiver, burned out speed controller;
after 20 seconds of no movement from the machine the
judge will rule it disqualified. The opponent will
then automatically advance regardless of the score.
In the event of a tie score after regulation time
expires, players will reset their robots. No
time is kept. Winner will be the wrestler that
Restrictions to Robots in Competition:
NO REPEATS of
projects from prior Tech Wars competitions!
Teachers please use your discretion on this and
ensure that a robot from your school is not entered
which has competed in prior years at Tech Wars.
Students can use small hand tools which
may include hammer, wire cutters, screw drivers and
tape to do minor adjustments! Due to safety
concerns of everyone at the competition there will
be NO cutting, grinding, sawing, soldering or any
other form of Sumo-Bot reconstruction allowed at the
competition! This should all be completed before
dropping the robot off at the pre-night inspection.
Robots must weigh
20lbs or less. The
will be at GCC for weigh in. If you think the
bathroom scale you’re using is not properly
calibrated, you’re probably correct! Be on
the safe side, and build your robot much less than
the twenty pound limit! This will ensure your
robot weighs in under the 20 pound limit and you’re
Student robots must be NO BIGGER than 24”x24”x24”.
Robots will be tested by fitting inside a box with
these internal dimensions. Robots that are too
big or too heavy will not be entered in competition.
corrosives, flames or pyrotechnics.
projectiles, or radio jamming
No electronic weaponry
such as stun guns, tesla coils, heat guns, etc.
devices - string, tape, fishing line, nets, etc.
No liquid weaponry
such as water, glue, foam, etc.
interference or poor sportsmanship between
No magnets or
electromagnets - may cause radio interference
No cutting devices -
Any major damage to the arena will result in
Electronics must be
visible, securely fastened and safe from damage.
No sharp edges on
exterior of robot
supply your own chargers.
Use typical materials
found in lab (plywood, plastic, sheet metal, etc.)
12 volts in batteries:
1 – 12v battery, or 2 - 6v, or other combinations
totaling 12v, such as: Hobbico Torqmaster LC 12
volt, 7 Ah Maintenance-free Lead Calcium Battery
from Tower Hobbies or other local hobby shops. (You
can use others and in combinations Not two 7.2v)
2 – speed
controllers such as: Innovation First Motor Speed
Controllers (you can use others)
2 – electric motors
and gearboxes such as: Fisher Price Motors/Gearboxes
(you can use others)
1 – On/Off Power
switch (should be easily accessible)
Paint Robots (not
required) – your school colors and no offensive
frequency crystal radio control system AM,
FM, Surface or Air: transmitter, receiver, and
battery pack. Use of two RC outputs only servo or
All other materials
and design is up to the competitor.
There is no limit to
cost of materials.