The house robots participate throughout the program against the competitors. They are generally
not allowed to attack other robots unless competitor robot(s) infiltrate the area in which
they guard. It is necessary to analyse the house robots as they are well built, designed and
controlled. A lot can be learnt from them in terms of material choice, power and the effective
weapon systems. It is necessary that the designed robot is prepared to battle against the house
Weight = 105 kg
Length = 130 cm
Width = 110 cm
Height = 70 cm
Maximum Speed = 16 Kph (10 Mph)
Diamond edged axe - 500 kg/cm3 cutting force
Spiked shunting element
Chassis - Steel
Scoops - Steel
Superstructure - Moulded fibreglass
12 Volt Motor
Internal combustion engine
Two wheel drive
Shunt has a very low ground clearance which means that he is difficult to flip over. Shunt's
main tactic is to push opponents around, as the bulldozer scoop has not proven to cause
damage to competitors. The axe however is effective and can punch holes in thick sheet steel
and polycarbonate shells. Although Shunt is protected at the front and rear by weapons, it is
vulnerable from side attacking positions. It has a good tractive force, which presents some
difficulty to opponents.
Weight = 116 kg
Length = 140 cm
Width = 66 cm
Height = 66 cm
Maximum Speed = 13 Kph (8 Mph)
Chainsaw tail - 3000 rpm
Protective armoured spikes
Body - Fibreglass matting
Chainsaw - Steel
Rechargeable battery unit
12 Volt Motor - increases to 24 Volt to improve speed
Pneumatic CO2 system - tusks
76 cc Motor - Chainsaw
Matilda's pneumatic tusks have the ability to lift and overturn competitors. When this occurs,
most robots become immobile. The chainsaw tail can be effective against certain competitors.
It does not work well against polycarbonate and metal as it is often rendered immobile as the
chain can be often dislodged. The main area of attack would be from the side as there is little
protection in this area.
Weight = 112 kg
Length = 160 cm
Width = 100 cm
Height = 70 cm
Maximum Speed = 19 Kph (12 Mph)
Circular saw (3000 rpm) and boom with 800 travel arc
Exoskeleton - Steel
Cutting Disc - Diamond
24 Volt Motor
Battery Driven Engine
Dead Metal attempts to clamp opponents using its forward mounted pincers. This weapon has the
ability to crush in a longitudinal fashion but it has yet to be exploited. The cutting disc
works in conjunction with the clamp by trapping competitor robots and then applying the saw.
Ideally, a robot would require very thick armour to protect itself from the cutting disc.
Weight = 120 kg
Length = 140 cm
Width = 90 cm
Height = 90 cm
Maximum speed = 13 Kph (8 Mph)
Steel ramming / cutting arm
Propane fuelled flame thrower
Circular saw (3200 rpm)
Chassis - Aluminium
Plating - Steel
12V Motor - increased to 24V if necessary
4 batteries running in parallel
The most visually impressive weapon belongs to Sergeant Bash. The flame-thrower does not effect
many competitors unless they incorporate particularly flammable materials. The grinding disc
is the more offensive weapon. It is much more effective, but as with all grinding discs, it is
susceptible to side attacks which can shatter or tear the disc rendering it useless.
Weight = 200 kg
Length = 120 cm
Width = 120 cm
Height = 130 cm
Maximum Speed = 8 Kph (5 Mph)
Flame thrower / lance
Hydraulic cutting pincers - 15 tonnes of force
Protective dorsal plates
Exoskeleton - Steel
8 Hp hydraulic driven pump - Pincers
1 Hp, 24 Volt Motors
Sir Killalot dons two weapons, a long lance and a hydraulic cutter. The lance is effective due
to its size and its ability to rotate. It is two meters long and has the ability to lift other
robots and manoeuvre them around or pin them in a certain position. The cutter can exert a
force of 15 tons at the tip. It has the ability to cut through very thick sections of steel
bar and even wheels. The main disadvantage with this robot is its low speed, mainly due to its
high weight. Both of its weapons are forward facing which leaves it vulnerable from the rear.
The hydraulic hoses have limited protection, and as such, could be severed.
The house robots were built by the BBC special effects departments and as such, do not conform
to the competition rules. Weight categories are exceeded on all house robots and the use of
pyrotechnics is allowed. Refinements to the robots have occurred between series and Sir Killalot
was designed for use from the second series onwards. Robots in the super heavyweight division
should be a match for all the house robots except Sir Killalot.
Due to the team's decision to enter the super-heavyweight division, it is important to analyse
and compare the house robot's attributes, as one-to-one combat is a realistic possibility.
The diagram's below show the speeds and weights of the house robots to give a rough benchmark
for the design.
Analysis of the above draws the following conclusions. Firstly, all house robots with the
exception of Sir Killalot, are of comparable weight. Secondly, the fastest robot is Dead Metal
at 12mph - a good benchmark to aim for, Sir Killalot is the slowest , but the most dangerous.
Weapon systems on the house robots are stronger than typical weapons (for example Killalot's
hydraulic cutting arm). Since the super heavy weight category is likely to include opposition
with this quality of weaponry careful design of armour is important.