The Lotus Eleven is a sports racing car built in various versions by Lotus from 1956 until 1958. The later versions built in 1958 are sometimes referred to as Lotus 13, although this was not an official designation.^{[citation needed]} In total, about 270 Elevens of all versions were built.

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Lotus Eleven
A Lotus Eleven at Donington Park in 2007
Overview
Manufacturer	Lotus cars
Production	1956–1958
Designer	Frank Costin
Body and chassis
Class	Sports car
Layout	Front-engine, rear-wheel-drive
Powertrain
Engine	Coventry-Climax FWA (1098 cc) SOHC I4 Ford (1172 cc) I4
Transmission	BMC A30, 4-speed manual
Dimensions
Wheelbase	2,159 mm (85.0 in)
Length	3,403 mm (134.0 in)
Width	1,500 mm (59 in)
Height	810 mm (32 in)
Curb weight	from 412 kg (908 lb)

Design and performance

The Eleven was designed by Colin Chapman and fitted with a sleek body designed by aerodynamicist Frank Costin. Its top version, dubbed Le Mans, was generally fitted with a 1100 cc (67ci) Coventry Climax FWA engine and occasionally with a 1500 cc (92ci)[1] Coventry Climax FWB engine mounted in the front of a tubular space frame and featured a De Dion rear axle and Girling disc brakes. Fully loaded, the car weighed only about 1,000 lb (450 kg). Versions for a 1100 cc (67ci)[2] Climax engine (Club) and a 1172 cc (72ci)[2] Ford engine (Sport) were also produced; both featured a live rear axle and drum brakes. Several cars were fitted with alternative engines by their owners, these included Coventry Climax 1500cc (92ci) FWB and FPF and 1200 cc (73ci) FWE, Maserati 150S 1500cc (92ci), DKW 1000cc (61ci) SAAB 850cc (52ci) and 750cc (46ci) engines. There were two main body styles: one with a headrest and the other with no headrest, just two small fins. Some cars were later fitted with a closed body with gullwing doors to meet GT specifications.

Perhaps the car's most notable race result was 7th overall at the 1956 24 Hours of Le Mans, driven by Reg Bicknell and Peter Jopp

Despite the wide variety of engines installed, the car was primarily designed to compete in the 1100 cc class where it was one of the most successful cars during the mid- to late-1950s. In 1956, an Eleven, modified by Costin with a bubble canopy over the cockpit,[2] was driven by Stirling Moss to a class world record of 143 mph (230 km/h) for a lap at Monza. Several class victories at Le Mans and Sebring followed, and the Eleven became Lotus' most successful race car design. A 750cc version won the Index of Performance at Le Mans in 1957.

In 1957, the Eleven underwent a major design change, including a new front suspension and improvements to the drivetrain. Although officially called Eleven Series 2, these late models are sometimes informally referred to as Lotus 13s, since they were produced between the 12 and 14 models and the 13 designation was not used by Lotus.

There have been several replicas and re-creations of the Lotus Eleven, including the Kokopelli 11, the Challenger GTS, the Spartak and the best known, the Westfield XI.

References

External links

Wikimedia Commons has media related to Lotus Eleven.

• Lotus Eleven information
• The Historic Lotus Register
• Lotus 11 history/photos
• the Lotus Eleven Register
• http://www.lotusracer.com/
• 1956 Lotus 11 Gallery/photos
• howstuffworks on the Lotus 11
• Period racing photos of the Lotus Eleven
• recent Lotus Eleven restoration

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