Caterham Cars
Encyclopedia
Caterham Cars is a manufacturer of specialist lightweight sports car
s based in Caterham
, Surrey
, England and part of the British motor industry
. Their only current model, the Caterham 7 (or Seven), is a direct evolution of the Series 3 Lotus Seven
designed by Colin Chapman
and originally launched in 1968. A track-only car, the SP/300.R, is to be released during 2010. On 27 April 2011, Team Lotus owner Tony Fernandes announced that his team had purchased Caterham.
's Lotus Cars
launched the Series 1 Lotus Seven
in 1957. The car was immediately embraced by enthusiasts as a low-cost, lightweight sports car and successful race car. Revised Series 2, Series 3 and Series 4 versions were subsequently launched in 1960, 1968 and 1970 respectively.
Caterham Cars had been a major Lotus 7 dealer during the 1960s, and its founder, Graham Nearn, purchased the rights to continue manufacture of the Seven design from Chapman in 1973, after Lotus announced its intention to discontinue the model. Caterham initially restarted manufacture of the Lotus Seven Series 4; however, when this proved unpopular, production switched to a Series 3 model in 1974.
The Lotus/Caterham 7 is widely regarded by car enthusiasts and the media as one of the iconic sports cars of the 20th century. With 2007 marking the 50th year of continuous production, the Seven still enjoys strong support and success in clubman-style racing.
Since 2006 Caterham Cars has been run by an ex-Lotus management team led by Ansar Ali (CEO) and Mark Edwards (COO).
or carbon fibre depending on specification. All Sevens are front engined with rear-wheel drive and two seats. Their extremely high performance is achieved through light weight (less than 500 kg (1,102 lb) on some versions) rather than particularly powerful engines. As well as a lightweight chassis and bodywork, Caterham Sevens achieve their very low mass through their lack of comfort and safety oriented features such as a fixed roof, doors, radio, air-conditioning, airbags, traction/stability control, ABS
, satellite navigation or cruise control. As a result, the Seven is somewhat limited in its practicality for everyday usage and is instead recognised by driving enthusiasts for its focus on driving enjoyment, making it an ideal track/race car or 'Sunday' car.
industry. The Lotus Seven was offered in kit form to allow buyers to avoid new car tax in the UK. Subsequently Caterham continued offering cars in 'complete knock down' (CKD) kit form as the tradition of hand building your own Seven was well established amongst enthusiasts. Today, all Caterham Sevens are still offered in kit form in the UK except the CSR (Series 6) model. Modern Caterham kits differ from the majority of kit car
s as all parts are supplied ready to assemble, not requiring a donor car, fabrication or any special skills.
, safety and emissions regulations in the modern era. As a result, the chassis/engine combinations, specifications, pricing and kit-form availability vary widely between countries.
In the United States Caterhams are currently sold as kits only, lacking some modern safety features required of manufacturers, but which are not required for individually assembled vehicles. Buyers can either choose to construct the cars themselves or pay their regional dealers or local builders to assemble them. Typically the engine and transmission are sourced separately as a unit - often from Caterham - but all other components (including frame, suspension, differential, driveshaft, interior, wiring and instruments) are provided in kit form. In the UK, the vehicles can be obtained as kits or entirely assembled by Caterham and registered for the road under SVA (Single Vehicle Approval) regulations. In the '60s, the original Lotus Seven
was sold only in kit form in both the UK and the US, in order to evade the very high taxes on complete new cars that were not assessed on automobile parts.
In 1987, the production and administration of the company moved to a new factory in Dartford, Kent, UK.
Caterham Cars still retains a showroom and servicing facility in the town of Caterham
adjacent to the train station. Additionally 'Caterham Midlands' showroom operates outside of Leicester
.
. Mechanically the 21 was very similar to the 7, using a modified 7 spaceframe chassis with a new GRP roadster-style body, including a wrap-around windscreen and fold-away fabric hood (convertible top) manufactured by Oxted Trimming Company.
The 21 benefited from a considerably stiffer setup than a 7, due to the work on the chassis and having a full body. Comfort was introduced in the same minimalist style as the 7, adding just enough to make it a proper roadster without adding too much weight.
The level of finish and comfort as well as build quality of the cars far exceeded its mid-1990s contemporaries including the Renault Sport Spyder, Lotus Elise and indeed the TVR's of the period.
Caterham unfortunately underestimated the effort involved in creating a completely new car and took far too long from its inception to deliver the first customer cars, seeing many people who had placed deposits defect to the Lotus Elise and other vehicles. Early ones were used as "prototypes", leaving customers to help iron out some of the foibles of the new car.
Whilst given excellent reviews by the UK automotive press, the 21 never sold particularly well, with only 48 ever made. It had moderately good racing success in the Belcar 24 hour series in Europe and is credited with helping Caterham develop the widetrack setup used in SV's (amongst other developments) and the CSR's sweeping interior is reminiscent of the original 21 design.
Although visually very similar to the S3, the SV is longer taller and wider and has significantly more space for taller and broader drivers with the added benefits of more luggage space, a larger fuel tank and more stability. The SV chassis is 25 kg (55 lb) heavier than the S3.
.
To celebrate the 50th anniversary of the Seven 2007 Caterham showed a concept car known as the X330 which utilised the CSR chassis but with a supercharged 330 bhp Duratec engine. Production is unconfirmed.
s or Cosworth
-derived race-prepared BDA/R units, enlarged to 1.7 litres and generating 150–170 bhp. In the early '90s, Caterham started using powerplants from other sources, with the least expensive models using 1.4-litre K series
engines from MG Rover for the base model, and Vauxhall
engines including full race versions of the 16 valve 2.0XE "red top" as fitted to 1990 Vauxhall Works Touring Cars. Rover engines span a power output of 110–250 bhp in the R500 Evolution, Vauxhall engines 165 bhp to 320 bhp in some factory built versions of the car. A 250 bhp Caterham JPE (Jonathan Palmer Evolution) briefly held the world record for production car 0–60 mph times (at 3.4 seconds) until it was bettered by the $1M McLaren F1
.
The many aftermarket tuning companies for these cars have also offered the Ford Zetec, Honda Fireblade, Honda Blackbird, Suzuki Hayabusa and even the Mazda Rotary engine.
In 2001, Caterham designated MG Rover the sole engine supplier for factory-built Sevens, with Ford Zetec, Honda Fireblade, Yamaha Firebird and Suzuki Hayabusa engines still available for kit assembly. The Rover engines were based on the K series
and carried the 'Xpower' branding. However, the partnership evidently came to an end with the buyout of Rover by China, with the 2005 model introducing a Ford Duratec engine.
Typical powerplant output ranges from 140 bhp to over 300 bhp, depending on specifications and modifications.
The gearbox is either the classic Ford T9 five-speed or Caterham's own six-speed box. The T9 is cheap and durable, but has gear ratios meant for a much heavier car. The six-speed gearbox is expensive and had early 'teething' problems, but its ratios are considered the perfect match for the Seven. Independent companies such as Quaife
do offer replacement gearkits for the T9 as well as sequential boxes for those with a racing fever and the need for a more robust transmission.
The most extreme engine/chassis combination available from the factory as of 2008 was the R500 with the 263 bhp Ford engine, bringing the car's 506 kg (1,116 lb) from zero to 60 mi/h in 2.88 seconds. The previous model also held a production car world record for zero to 100 mi/h back to zero at 10.73 seconds (faster than many modern family saloons can reach 60), set in 27 April 2004.
and its exceptional Lotus heritage and handling the Caterham has been a favourite among club racers since the beginning of its career. In the United Kingdom and elsewhere, the Caterham is used in a variety of one-make series and sports car championships
, both regional and national.
However, the Caterham has proven so successful against bigger and more powerful sports cars that it has been banned from FIA
competitions and most international races, coining the phrase "too fast to race".
Sports car
A sports car is a small, usually two seat, two door automobile designed for high speed driving and maneuverability....
s based in Caterham
Caterham
Caterham is a town in the Tandridge District of Surrey, England. The town is geographically divided into two sections: Caterham on the Hill and Caterham Valley - the main town centre. The town lies close to the A22, a few miles south of Croydon, in a valley cut into the dip slope of the North Downs...
, Surrey
Surrey
Surrey is a county in the South East of England and is one of the Home Counties. The county borders Greater London, Kent, East Sussex, West Sussex, Hampshire and Berkshire. The historic county town is Guildford. Surrey County Council sits at Kingston upon Thames, although this has been part of...
, England and part of the British motor industry
British motor industry
The automotive industry in the United Kingdom is now best known for premium and sports car marques including Aston Martin, Bentley, Daimler, Jaguar, Lagonda, Land Rover, Lotus, McLaren, MG, Mini, Morgan and Rolls-Royce. Volume car manufacturers with a major presence in the UK include Ford, Honda,...
. Their only current model, the Caterham 7 (or Seven), is a direct evolution of the Series 3 Lotus Seven
Lotus Seven
The Lotus Seven is a small, simple, lightweight two-seater open-top sports car produced by Lotus Cars between 1957 and 1972....
designed by Colin Chapman
Colin Chapman
Anthony Colin Bruce Chapman CBE was an influential British designer, inventor, and builder in the automotive industry, and founder of Lotus Cars....
and originally launched in 1968. A track-only car, the SP/300.R, is to be released during 2010. On 27 April 2011, Team Lotus owner Tony Fernandes announced that his team had purchased Caterham.
Lotus Origins
Colin ChapmanColin Chapman
Anthony Colin Bruce Chapman CBE was an influential British designer, inventor, and builder in the automotive industry, and founder of Lotus Cars....
's Lotus Cars
Lotus Cars
Lotus Cars is a British manufacturer of sports and racing cars based at the former site of RAF Hethel, a World War II airfield in Norfolk. The company designs and builds race and production automobiles of light weight and fine handling characteristics...
launched the Series 1 Lotus Seven
Lotus Seven
The Lotus Seven is a small, simple, lightweight two-seater open-top sports car produced by Lotus Cars between 1957 and 1972....
in 1957. The car was immediately embraced by enthusiasts as a low-cost, lightweight sports car and successful race car. Revised Series 2, Series 3 and Series 4 versions were subsequently launched in 1960, 1968 and 1970 respectively.
Caterham Cars had been a major Lotus 7 dealer during the 1960s, and its founder, Graham Nearn, purchased the rights to continue manufacture of the Seven design from Chapman in 1973, after Lotus announced its intention to discontinue the model. Caterham initially restarted manufacture of the Lotus Seven Series 4; however, when this proved unpopular, production switched to a Series 3 model in 1974.
The Lotus/Caterham 7 is widely regarded by car enthusiasts and the media as one of the iconic sports cars of the 20th century. With 2007 marking the 50th year of continuous production, the Seven still enjoys strong support and success in clubman-style racing.
Since 2006 Caterham Cars has been run by an ex-Lotus management team led by Ansar Ali (CEO) and Mark Edwards (COO).
Construction
As with its Lotus Seven precursors, Caterhams are constructed of aluminium sheet attached to a tubular steel chassis. Nosecone and wings are either GRPGlass-reinforced plastic
Fiberglass , is a fiber reinforced polymer made of a plastic matrix reinforced by fine fibers of glass. It is also known as GFK ....
or carbon fibre depending on specification. All Sevens are front engined with rear-wheel drive and two seats. Their extremely high performance is achieved through light weight (less than 500 kg (1,102 lb) on some versions) rather than particularly powerful engines. As well as a lightweight chassis and bodywork, Caterham Sevens achieve their very low mass through their lack of comfort and safety oriented features such as a fixed roof, doors, radio, air-conditioning, airbags, traction/stability control, ABS
Anti-lock braking system
An anti-lock braking system is a safety system that allows the wheels on a motor vehicle to continue interacting tractively with the road surface as directed by driver steering inputs while braking, preventing the wheels from locking up and therefore avoiding skidding.An ABS generally offers...
, satellite navigation or cruise control. As a result, the Seven is somewhat limited in its practicality for everyday usage and is instead recognised by driving enthusiasts for its focus on driving enjoyment, making it an ideal track/race car or 'Sunday' car.
Kit format
Chapman and Lotus helped to pioneer the British kit carKit car
A kit car, also known as a "component car", is an automobile that is available as a set of parts that a manufacturer sells and the buyer then either assembles into a car themselves, or retains a third party to do part or all of the work on their behalf...
industry. The Lotus Seven was offered in kit form to allow buyers to avoid new car tax in the UK. Subsequently Caterham continued offering cars in 'complete knock down' (CKD) kit form as the tradition of hand building your own Seven was well established amongst enthusiasts. Today, all Caterham Sevens are still offered in kit form in the UK except the CSR (Series 6) model. Modern Caterham kits differ from the majority of kit car
Kit car
A kit car, also known as a "component car", is an automobile that is available as a set of parts that a manufacturer sells and the buyer then either assembles into a car themselves, or retains a third party to do part or all of the work on their behalf...
s as all parts are supplied ready to assemble, not requiring a donor car, fabrication or any special skills.
International
Although the Seven has always been popular with enthusiasts outside of the UK marketplace, export of the Seven to other markets has increasingly been limited by homologationHomologation
Homologation is a technical term, derived from the Greek homologeo for "to agree", which is generally used in English to signify the granting of approval by an official authority...
, safety and emissions regulations in the modern era. As a result, the chassis/engine combinations, specifications, pricing and kit-form availability vary widely between countries.
In the United States Caterhams are currently sold as kits only, lacking some modern safety features required of manufacturers, but which are not required for individually assembled vehicles. Buyers can either choose to construct the cars themselves or pay their regional dealers or local builders to assemble them. Typically the engine and transmission are sourced separately as a unit - often from Caterham - but all other components (including frame, suspension, differential, driveshaft, interior, wiring and instruments) are provided in kit form. In the UK, the vehicles can be obtained as kits or entirely assembled by Caterham and registered for the road under SVA (Single Vehicle Approval) regulations. In the '60s, the original Lotus Seven
Lotus Seven
The Lotus Seven is a small, simple, lightweight two-seater open-top sports car produced by Lotus Cars between 1957 and 1972....
was sold only in kit form in both the UK and the US, in order to evade the very high taxes on complete new cars that were not assessed on automobile parts.
Location
Until 1987 the offices, factory and showroom of Caterham Cars were located in the town of Caterham, Surrey, UK.In 1987, the production and administration of the company moved to a new factory in Dartford, Kent, UK.
Caterham Cars still retains a showroom and servicing facility in the town of Caterham
Caterham
Caterham is a town in the Tandridge District of Surrey, England. The town is geographically divided into two sections: Caterham on the Hill and Caterham Valley - the main town centre. The town lies close to the A22, a few miles south of Croydon, in a valley cut into the dip slope of the North Downs...
adjacent to the train station. Additionally 'Caterham Midlands' showroom operates outside of Leicester
Leicester
Leicester is a city and unitary authority in the East Midlands of England, and the county town of Leicestershire. The city lies on the River Soar and at the edge of the National Forest...
.
Caterham 21
In 1994 Caterham also produced a model called the '21'Caterham 21
The Caterham 21 is a two seat roadster designed and hand built by Caterham Cars. It was intended to be a more standard styled version of the Caterham 7....
. Mechanically the 21 was very similar to the 7, using a modified 7 spaceframe chassis with a new GRP roadster-style body, including a wrap-around windscreen and fold-away fabric hood (convertible top) manufactured by Oxted Trimming Company.
The 21 benefited from a considerably stiffer setup than a 7, due to the work on the chassis and having a full body. Comfort was introduced in the same minimalist style as the 7, adding just enough to make it a proper roadster without adding too much weight.
The level of finish and comfort as well as build quality of the cars far exceeded its mid-1990s contemporaries including the Renault Sport Spyder, Lotus Elise and indeed the TVR's of the period.
Caterham unfortunately underestimated the effort involved in creating a completely new car and took far too long from its inception to deliver the first customer cars, seeing many people who had placed deposits defect to the Lotus Elise and other vehicles. Early ones were used as "prototypes", leaving customers to help iron out some of the foibles of the new car.
Whilst given excellent reviews by the UK automotive press, the 21 never sold particularly well, with only 48 ever made. It had moderately good racing success in the Belcar 24 hour series in Europe and is credited with helping Caterham develop the widetrack setup used in SV's (amongst other developments) and the CSR's sweeping interior is reminiscent of the original 21 design.
Caterham SP/300.R
The SP/300.R, a new track-only model, is to be released during 2010. It is designed by Caterham alongside Lola Cars. The SP/300.R is a limited edition with limited production to 25 per annum.Series 3 (S3)
The most popular variant retains the same dimensions and layout of the Lotus 7 Series 3.Series 5 (SV)
Caterham introduced this variant in 2000 to accommodate larger drivers (space is restricted in the S3 for drivers over 6 ft (1.8 m) tall.)Although visually very similar to the S3, the SV is longer taller and wider and has significantly more space for taller and broader drivers with the added benefits of more luggage space, a larger fuel tank and more stability. The SV chassis is 25 kg (55 lb) heavier than the S3.
CSR (Series 6)
The CSR was launched in 2005 following extensive research and development by Caterham with the objective of creating an improved Seven. The CSR is based on the larger dimensions of the SV but with a substantially revised and stiffer chassis, inboard 'pushrod' front suspensions, fully independent rear suspension, improved aerodynamics, potent Cosworth engines and a new 'integrated' dashboard layout.Classic
The most basic version of the 7 was traditionally offered with a 'live' rear axle but now comes with De Dion rear suspension found in other models of the same range. This trim level strips away all non-essential equipment and comforts.- Classic trim is available on S3/SV chassis
- Engines: 1.4-litre K-Series (105 bhp) or 1.6-litre K-Series (120 bhp).
Roadsport
Roadsport is the trim level intended for general usage, different weather conditions and touring. The spec includes a full windscreen and weather equipment to increase practicality. A large range of performance options are available. The Roadsport dates back to 1996 when it was called the Superlight R, in 1998 a much softer version came out called the Seven Clubsport 1.8. The range continued to be developed in the years as a great alternative to someone who wanted a little bit more than a Classic, but a bit less than a Superlight.- Classic trim is available on S3/SV chassis
- Engines: 1.6-litre Ford Sigma (120,125 or 150 bhp) or 2.0-litre Ford Duratec (175 bhp).
Superlight
The Superlight is intended for track and fast road usage. Superlight spec includes performance options such as carbon bodywork and a close ratio 6-speed gearbox. A wind deflector in place of the windscreen makes a helmet more or less mandatory. The Superlight R400 uses a 2.0 litre Ford Duratec engine tuned to 210 bhp. The R400 name indicates the car's 400 bhp-per-tonne power-to-weight ratio. The R500 has been made Top Gear car of the year 2008. In another appearance earlier in the series, it placed fifth on the Power Lap board with a 1:17.9. This time beat the €1,100,000 (£899,000/$1,550,000), 1000 hp Bugatti VeyronBugatti Veyron
The Bugatti Veyron EB 16.4 is a mid-engined grand touring car. The Super Sport version is the fastest road-legal production car in the world, with a top speed of . The original version has a top speed of...
.
- Superlight trim is available on S3/SV chassis
- Engines: 1.6-litre Ford Sigma (150 bhp) or 2.0-litre Ford Duratec (175 bhp, 210 bhp or 263 bhp).
CSR
The CSR chassis comes in two basic trims which mirror those of the S3/SV cars. The 'basic' CSR has a road and touring oriented spec with full windscreen and weather equipment. This is available as the CSR200 (200 bhp) or CSR260 (260 bhp). The CSR Superlight (also 260 bhp) is the current Caterham performance flagship strips away the windscreen, integrated dash and other comfort-oriented components for maximum performance, with specialist 'Dynamic dampers' added to improve its already phenomenal grip. The 'basic' CSR set an unofficial time of 1.17.4 on the BBC Top Gear test track at Dunsfold, placing it ahead of many of the world's most expensive performance cars.- Engines: 2.3-litre Ford Duratec tuned by Cosworth (200 bhp or 260 bhp)
Future models
Caterham announced a CSR175 model at the Tokyo Motorshow in November 2009.To celebrate the 50th anniversary of the Seven 2007 Caterham showed a concept car known as the X330 which utilised the CSR chassis but with a supercharged 330 bhp Duratec engine. Production is unconfirmed.
RS Performance RST-V8 Engine
The 'Caterham Levante', built by RS Performance Engine Developments Ltd. (RS=Russell Savory), is a mostly-carbon-fibre bodied Caterham, with Kevlar seats, combined with an "over 500bhp" 2.4-litre, 40-valve supercharged V8 and a reduced body weight of 520 kg (1,146 lb) boasts almost 1000 bhp per tonne (initial announced specifications were 550 bhp and 530 kg (1,168 lb), but the RS website specifies "in excess of 500bhp," and 520 kg (1,146 lb) or 530 kg (1,168 lb); the math may or may not achieve "over 1000 bhp per tonne"). The eight cars, costing £115,000, sold out. and only eight will be produced to celebrate more than 50 years in production. Two days' of mandatory "driver training" are included in the price of the car.Kit build
All of the 2008 model line-up is available as a 'CKD' complete kit for build by the owner, with the exception of CSR models.Engines
Historically, engines have been supplied by Ford, specifically Ford Kent engineFord Kent engine
The Ford Kent is an internal combustion engine from Ford of Europe. Originally developed in 1959 for the Ford Anglia, it is an in-line four-cylinder engine with a cast-iron cylinder head and block.-Pre-Crossflow:...
s or Cosworth
Cosworth
Cosworth is a high performance engineering company founded in London in 1958, specialising in engines and electronics for automobile racing , mainstream automotive and defence industries...
-derived race-prepared BDA/R units, enlarged to 1.7 litres and generating 150–170 bhp. In the early '90s, Caterham started using powerplants from other sources, with the least expensive models using 1.4-litre K series
Rover K engine
The K-Series engine is a series of engines built by Powertrain Ltd, a sister company of MG Rover. The engine was built in two forms: a straight-four cylinder, available with SOHC and DOHC, ranging from 1.1 L to 1.8 L; and the KV6 V6 variation....
engines from MG Rover for the base model, and Vauxhall
Vauxhall Motors
Vauxhall Motors is a British automotive company owned by General Motors and headquartered in Luton. It was founded in 1857 as a pump and marine engine manufacturer, began manufacturing cars in 1903 and was acquired by GM in 1925. It has been the second-largest selling car brand in the UK for...
engines including full race versions of the 16 valve 2.0XE "red top" as fitted to 1990 Vauxhall Works Touring Cars. Rover engines span a power output of 110–250 bhp in the R500 Evolution, Vauxhall engines 165 bhp to 320 bhp in some factory built versions of the car. A 250 bhp Caterham JPE (Jonathan Palmer Evolution) briefly held the world record for production car 0–60 mph times (at 3.4 seconds) until it was bettered by the $1M McLaren F1
McLaren F1
The McLaren F1 is a supercar designed and manufactured by McLaren Automotive. Originally a concept conceived by Gordon Murray, he convinced Ron Dennis to back the project and engaged Peter Stevens to design the exterior of the car...
.
The many aftermarket tuning companies for these cars have also offered the Ford Zetec, Honda Fireblade, Honda Blackbird, Suzuki Hayabusa and even the Mazda Rotary engine.
In 2001, Caterham designated MG Rover the sole engine supplier for factory-built Sevens, with Ford Zetec, Honda Fireblade, Yamaha Firebird and Suzuki Hayabusa engines still available for kit assembly. The Rover engines were based on the K series
Rover K engine
The K-Series engine is a series of engines built by Powertrain Ltd, a sister company of MG Rover. The engine was built in two forms: a straight-four cylinder, available with SOHC and DOHC, ranging from 1.1 L to 1.8 L; and the KV6 V6 variation....
and carried the 'Xpower' branding. However, the partnership evidently came to an end with the buyout of Rover by China, with the 2005 model introducing a Ford Duratec engine.
Typical powerplant output ranges from 140 bhp to over 300 bhp, depending on specifications and modifications.
The gearbox is either the classic Ford T9 five-speed or Caterham's own six-speed box. The T9 is cheap and durable, but has gear ratios meant for a much heavier car. The six-speed gearbox is expensive and had early 'teething' problems, but its ratios are considered the perfect match for the Seven. Independent companies such as Quaife
Quaife
R.T. Quaife Engineering, Ltd. is a British manufacturer of automotive drivetrain products. It designs and manufactures replacement gearboxes and gear sets, some of which are for four-wheel drive systems....
do offer replacement gearkits for the T9 as well as sequential boxes for those with a racing fever and the need for a more robust transmission.
The most extreme engine/chassis combination available from the factory as of 2008 was the R500 with the 263 bhp Ford engine, bringing the car's 506 kg (1,116 lb) from zero to 60 mi/h in 2.88 seconds. The previous model also held a production car world record for zero to 100 mi/h back to zero at 10.73 seconds (faster than many modern family saloons can reach 60), set in 27 April 2004.
Motor racing
Because of its relatively high power-to-weight ratioPower-to-weight ratio
Power-to-weight ratio is a calculation commonly applied to engines and mobile power sources to enable the comparison of one unit or design to another. Power-to-weight ratio is a measurement of actual performance of any engine or power sources...
and its exceptional Lotus heritage and handling the Caterham has been a favourite among club racers since the beginning of its career. In the United Kingdom and elsewhere, the Caterham is used in a variety of one-make series and sports car championships
Caterham Racing
Caterham Racing is a term used to describe Motor Racing of Caterham Seven-type sportscars.-History:The Caterham Seven is a small sports car produced by Caterham Cars in the United Kingdom. It is based on the Lotus Seven, a lightweight sports car sold in kit and pre-built form by Lotus Cars, from...
, both regional and national.
However, the Caterham has proven so successful against bigger and more powerful sports cars that it has been banned from FIA
Fédération Internationale de l'Automobile
The Fédération Internationale de l'Automobile is a non-profit association established as the Association Internationale des Automobile Clubs Reconnus on 20 June 1904 to represent the interests of motoring organisations and motor car users...
competitions and most international races, coining the phrase "too fast to race".