The Sunbeam 1000 HP ''Mystery'', or "''The Slug''", is a

land speed record The land speed record (or absolute land speed record) is the highest speed achieved by a person using a vehicle on land. There is no single body for validation and regulation; in practice the Category C ("Special Vehicles") flying start regula ...

-breaking car built by the Sunbeam car company of

Wolverhampton Wolverhampton () is a city, metropolitan borough and administrative centre in the West Midlands, England. The population size has increased by 5.7%, from around 249,500 in 2011 to 263,700 in 2021. People from the city are called "Wulfrunians ...

that was powered by two aircraft engines. It was the first car to travel at over 200 mph. The car's last run was a demonstration circuit at

Brooklands Brooklands was a motor racing circuit and aerodrome built near Weybridge in Surrey, England, United Kingdom. It opened in 1907 and was the world's first purpose-built 'banked' motor racing circuit as well as one of Britain's first airfie ...

, running at slow speed on only one engine. It is today on display at the

National Motor Museum, Beaulieu The National Motor Museum (originally the Montagu Motor Museum) is a museum in the village of Beaulieu, set in the heart of the New Forest, in the English county of Hampshire. History The museum was founded in 1952 by Edward Douglas-Scot ...

Design

Louis Coatalen Louis Hervé Coatalen (11 September 1879 – 23 May 1962) was an automobile engineer and racing driver born in Brittany who spent much of his adult life in Britain and took British nationality. He was a pioneer of the design and development of inte ...

's Automobiles Talbot-Darracq team was short of funds and so little new development was possible. The engines were a pair of Sunbeam Matabele 22.4 litre aircraft engines, previously used in a

powerboat A motorboat, speedboat or powerboat is a boat that is exclusively powered by an engine. Some motorboats are fitted with inboard engines, others have an outboard motor installed on the rear, containing the internal combustion engine, the gea ...

. Although best known as the "1000 HP" car, its actual power was closer to 900 hp (670 kW). One engine was mounted ahead of the driver, one behind. The rear engine was started first by compressed air, then the front engine was started through a mechanical friction clutch. Once synchronised, they were locked together with a

dog clutch A dog clutch (also known as a positive clutch or dog gears) is a type of clutch that couples two rotating shafts or other rotating components by engagement of interlocking teeth or dogs rather than by friction. The two parts of the clutch are de ...

for the record attempt. The car was designed by Captain Jack Irving, having new features such as all-enveloping bodywork that assisted aerodynamics. The car also had specially-made tyres capable of withstanding 200 mph, although only rated for 3½ minutes at these speeds.National Motor Museum guidebook, Beaulieu One more primitive feature was the final drive to the rear axle using a pair of chains. Only weeks before the record attempt, it was speculated that J. G. Parry-Thomas had been

decapitated Decapitation or beheading is the total separation of the head from the body. Such an injury is invariably fatal to humans and most other animals, since it deprives the brain of oxygenated blood, while all other organs are deprived of the i ...

when a similar chain in his car ''

Babs Babs or BABS may refer to: People * Nickname of Barbara Windsor (1937-2020), British actress * Babs McMillan, Australian actress * Babs Olusanmokun, American actor * Babs Reingold, American artist * Babs Fafunwa (1923-2010), Nigerian educationist ...

'' had broken at speed. Later investigation of the recovered wreckage suggested instead that the rear right-hand wheel had failed, overturning Babs. Although the Sunbeam's chains were enclosed below an armoured steel housing, these covers had been designed from the beginning, they were not added after Parry-Thomas' accident.

Record

The Sunbeam 1000 HP was the first non-American car to run on Daytona Beach for a

attempt. On 29 March 1927,

Henry Segrave Sir Henry O'Neal de Hane Segrave (22 September 1896 – 13 June 1930) was an early British pioneer in land speed and water speed records. Segrave, who set three land and one water record, was the first person to hold both titles simultaneous ...

drove the car to a new land speed record of 203.79 miles per hour (327.97 km/h), the first car to reach a speed over 200 mph (320 km/h).

References

Bibliography

Notes

External links