Horizontal crushers are a prominent form of gripping weapon seen in various Robot Wars series and competitions. They are primarily designed to grip both sides of other robots, with the intention of trapping them and allowing the wielder to push and drag them at will. Depending on the weapon's design and power, they can also be used to simultaneously crush and pierce through an opponent's sides.
The first usage of horizontal crushers in any form occurred in the 1995 US competition, in the form of the front grabbing arms of Super Lightweight entry KMM. These arms proved very effective at grabbing and pinning opponents, allowing KMM to win the Super Lightweight Face-Off and Melee championships in its combat debut.[1]
In televised series, the weapon type was first adopted in active form by House Robot Dead Metal, whose design always incorporated a set of pneumatic-powered pincers. A static variation was used by competitor Milly-Ann Bug in Series 2. Series 3 saw the first instances of UK competitors using active variants, with the debuts of Thermador and Scarab; the latter being the first to use them to pierce as opposed to simply control an opponent.
The Thermidor machines all utilised this weapon, but they were used more prominently and successfully by Series 7 Semi-Finalist Tough as Nails and double UK Annihilator champion Kan-Opener.
Definition[]

Tough As Nails' mechanism in operation
A horizontal crusher uses two large claws or rods attached to one or two pistons or parallel bars, which are intended to grab, crush or pierce other robots from the sides. They are usually either electric, hydraulic or pneumatically powered, and can work either as a stand-alone weapon, or in tandem with another weapon, such as Dead Metal's saw or Thermidor 2's flipper.
Advantages and Disadvantages[]
Advantages
Dead Metal grabs hold of Stinger as he slices into its wheel hub

Kan-Opener pits Raging Knightmare
- They make for very effective pitting weapons, as the opponent is restricted from multiple sides.
- Horizontal crushers offer potential for an effective weapon synergy with another weapon type. This is best demonstrated by Dead Metal's pincers, which allowed him/her to grasp competitors as he/she sliced through their armour, chassis and wheels with his/her circular saw. Series 5, 7-8 and 10 competitor Big Nipper also integrated horizontal pincers into a lifting arm with reasonable success.
- They can also be combined with overhead axe and hammer weapons, as demonstrated by the Series 5 version of Splinter and the Series 6 incarnation of Thor.
- They are also easier to implement into an invertible design than their vertical counterparts. Kan-Opener and Tough as Nails are notable examples of this.
- Horizontal crushers can bite directly into the opponent's sides and/or wheels, severely hampering the opponent's movement and even causing damage to its drive systems. Tough as Nails used this tactic regularly to score easy victories over potent opponents, such as Disc-O-Inferno and Gravity, by grabbing, pushing, dragging and pitting them.
Disadvantages

Atomic's easy defeat of Kan-Opener in Series 5

Kan-Opener could not let go of Barbaric Response during its Series 7 melee, costing it the judges' decision

Tough as Nails is assailed by Thor's axe and Shockwave's scoop
- Horizontal crushers provide a gaping ground clearance which allow other opponents to get underneath them easily. Kan-Opener's Series 5 and 8 losses to Atomic and Apollo demonstrated this, as did Tough as Nails' defeat to Bulldog Breed in Series 7.
- As with vertical crushers, horizontal crushers often have problems getting unstuck after piercing through an opponent's armour, affecting a robot's control. This cost Kan-Opener twice in its opening melees in Series 6 and 7, firstly being unable to evade the attacks of Fluffy and Double Trouble after getting stuck into Demolition Man, and then losing the judges' decision in the latter after spending most of the battle impaled on Barbaric Response when its jaws broke.
- The weapon mechanisms could easily be broken. Kan-Opener's jaws failed after being damaged in its aforementioned Series 7 battle, as did Thermidor 2's claws during its Series 4 Semi-Final battle against Pussycat.
- Horizontal crushers, especially invertible ones, are highly vulnerable to overhead weapons. Tough as Nails' first defeat against Thor was an indicator of this, as repeated axe blows from Thor resulted in Tough as Nails losing its removable link in Series 8.
- The battle between Tough as Nails and Thor in Series 10 also demonstrated the inability for horizontal crushers to grab hold of slippery designs such as the curved body shell of Thor.
- Even when opponents are grabbed by the crusher, they may be free to continue attacking the crusher-wielding robot as long as it remains in its grip. Tough as Nails was especially susceptible to this, losing to Bulldog Breed, Storm 2, Thor and Shockwave as a result of each opponent attacking it while being held in its pincers.
List of Robots with Horizontal Crushers[]
Robots are listed alphabetically.
DESKTOP MODE ONLY: Robots which are not heavyweight entries are listed with a green background. House Robots are listed with a gold background. Robots from the original 1994-1997 US competitions are listed with a purple background.
Robot | Series Appearances with Horizontal Crushers | Notes | Image |
---|---|---|---|
4x4 | Series 6 | Only entry in Series 6 to represent the Republic of Ireland. | |
All Torque | Series 3 | Added horizontal claws to its design solely for The First World Championship. These weapons were not seen to move in battle, nor is any power source visible for the claws, but the robot's statistics board did claim it had a crusher weapon. | |
Apocalypse | Series 10 | Horizontal grabbers were mounted on the side and exerted 60kg of force, operating on around 6-8 bar (87-117psi). Combined with an overhead axe weapon. | |
Big Nipper | Series 5, 7-8, 10 | Crushing claws were integrated into a front lifter, later an arm which gave the robot self-righting capabilities and a lifting capacity of 200-300kg. Claws featured a crushing force of four tonnes in Series 8. Interchangeable with an arm-mounted vertical spinning disc in Series 8 and 10. | |
Bite Me | 1996 US Championship | Featherweight. Clamping jaws made out of parts of a bicycle wheel rim. Highly fragile; replaced with a static scoop partway through its 1996 run. 1996 Featherweight Face-Off Quarter-Finalist.[2] | |
Bot-Ugly | US Season 1 | Weapon arms moved in a straight line instead of an arc, designed to pin the robot between them. | |
Dead Metal | Series 1-10, Extreme 1-2, US Season 1-2, Nickelodeon, Dutch Series 1-2, German Series | House Robot. Weapons synergy with arm (Series 1-2) or head-mounted (Series 3-10, Extreme, International) circular saw. Referred to as 'pincers', pneumatically-powered. | |
Infinity | Series 6, Extreme 2 | University Challenge runner-up. | |
Jellyfish | Series 9 | Horizontal clamp, one of the widest robots in Robot Wars. Weapon was in the form of a sliding arm, designed to "cuddle" other robots. | |
Kan-Opener | Series 5-8, Extreme 2 | Extreme 2 and Series 7 Annihilator champion. Crushing claws were hydraulically-powered and made interchangeable for the Series 6-7 incarnations. Claws of the Series 8 version featured a crushing force of 12 tonnes at the tips. | |
Katnip | Extreme 2 | Featherweight entry from the Cold Fusion Team. | |
KMM | 1995-1997 US Championships | Featherweight. Claw-like arms with a wide reach, later combined with an overhead pickaxe. On the 1996 incarnation, these were made from PVC pipe with hooked metal tips.[3] 1997 incarnation is stated to utilise 'sawtoothed' arms powered by a winch mechanism.[4] 1995 Super Lightweight Face-Off and Melee Champion. | |
MechaDroid | US Season 2 | Front-mounted, arm-like 'pincers' used in tandem with a double-headed axe. | |
Milly-Ann Bug | Series 2 | Two static beams attached to the front dome, modelled on a pair of insect mandibles. Replaced with static spikes from Series 3 onward. | |
Monad | Series 5 | Succeeded by 4x4. | |
Munch | 1996 US Championship | Hydraulic jaws made out of steel tubing; inner surfaces lined with piercing spikes. Designed with a gripping force of 1,000lbs.[5][6][5][6][7] | |
Red Scorpion | 1996-1997 US Championships | Front claws used in tandem with an overhead 'stinging tail'. The 1997 incarnation (simply referred to as The Scorpion or Scorpion) featured hydraulic front jaws with an unusual 'needle point' design, intended to spear, then tear armour panels open.[8] | |
Rex | 1996 US Championship | Heavyweight walker. Very large clamping arms with two rows of teeth each. | |
Scarab (Dutch) | Dutch Series 2 | 100kg shufflebot. | |
Scarab (UK) | Series 3 | First robot to use horizontal jaws specifically for crushing; the hydraulically-actuated jaws had 2.5 tonnes of pressure. | |
Smart Spike | 1996 US Championship | Autonomous entry. Each arm featured large red claws and a long spike at the far end. | |
Splinter | Series 4-5 | Series 4 Semi-Finalist, used in tandem with a static front scoop. Combined with a spiked axe for Series 5. | |
Staglet | Series 7 | Featherweight version of The Stag. | |
The Stag | Series 6-7 | Caused visible damage to Wild Thing despite losing both of its fights. | |
Thermidor 2 | Series 3-8, Extreme 1-2 | Modelled on a lobster. Competed in Series 3 as Thermador with only its claws for weaponry. Claws were combined with a high-pressure pneumatic flipper on Thermidor 2. Series 4 and 7 Semi-Finalist, though mainly relied on its flipper to win battles. | |
The Swarm | Series 10 | Horizontal crushers equipped on Pinza, one part of the four-part clusterbot. | |
Thor | Series 6 | Claws were easily bent, and were scrapped before Extreme 2. Used in combination with a pneumatic spiked hammer. | |
Tough as Nails | UK Series 7-8, 10, Dutch Series 2 | Pneumatically-powered HARDOX claws forming the entire robot's body. Powered by a pneumatic ram attached to the axles, which pushed its wheels further apart as the claws closed. Crushing capacity of 200kg as of Series 8. Series 7 Semi-Finalist. |
References[]
- ↑ 'ROBOT WARS ® Photos -- 1995 Winners', US Robot Wars website (archived 2 May 1997)
- ↑ 'BITE ME', Team Spike website (archived)
- ↑ 'KMM' [1996], Team Spike website (archived)
- ↑ 'KMM' [1997], Team Spike website (archived)
- ↑ 5.0 5.1 'MUNCH', Team Spike website (archived)
- ↑ 6.0 6.1 'Munch -- Story of RW 96', Distraction Laboratories website (archived)
- ↑ 'Munch -- Assembly Round One', Distraction Laboratories website (archived)
- ↑ 'SCORPION', Team Spike website (archived)
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