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119-686: The Austin-Healey Sprite is a small open sports car produced in the United Kingdom from 1958 until 1971. The Sprite was announced to the press in Monte Carlo by the British Motor Corporation on 20 May 1958, two days after that year's Monaco Grand Prix . It was intended to be a low-cost model that "a chap could keep in his bike shed", yet be the successor to the sporting versions of the pre-war Austin Seven . The Sprite

238-604: A cave in 1934) can be directly associated to the exploration of the Dent de Crolles cave system. In 1941, American cavers organized themselves into the National Speleological Society (NSS) to advance the exploration, conservation, study and understanding of caves in the United States. American caver Bill Cuddington , known as "Vertical Bill", further developed the single-rope technique (SRT) in

357-399: A controversial choice for a "purist" sports car. The Elan sold poorly and was discontinued after three years. The 1996 Lotus Elise , a mid-engined, rear-wheel drive roadster, was much more successful and remained in production until 2021. Roadsters enjoyed a resurgence in the mid-1990s, including the 1989-present Mazda MX-5 , the 1995-2002 BMW Z3 (succeeded by the 2002-2016 BMW Z4 ),

476-409: A definition. Insurance companies have also attempted to use mathematical formulae to categorise sports cars, often charging more for insurance due to the inherent risk of performance driving. There is no fixed distinction between sports cars and other categories of performance cars, such as muscle cars and grand tourers , with some cars being members of several categories. Traditionally,

595-442: A dissolution of existing features. Pollution is also of concern. Since water that flows through a cave eventually comes out in streams and rivers, any pollution may ultimately end up in someone's drinking water, and can even seriously affect the surface environment, as well. Even minor pollution such as dropping organic material can have a dramatic effect on the cave biota. Cave-dwelling species are also very fragile, and often,

714-534: A dynamo. This was also the first year that reclining seats were fitted. A facelift was carried out for the 1970 model year (beginning in September 1969) after Austin-Healey (and MG) became part of British Leyland . These largely cosmetic revision were to update the appearance of the car (now 10 years old) and minimise the difference between the Sprite and Midget versions to reduce production costs; both cars now had

833-503: A flexible metal ladder . In addition to the equipment already described, cavers frequently carry packs containing first-aid kits, emergency equipment, and food. Containers for securely transporting urine are also commonly carried. On longer trips, containers for securely transporting feces out of the cave are carried. During very long trips, it may be necessary to camp in the cave – some cavers have stayed underground for many days, or in particularly extreme cases, for weeks at

952-499: A group for companionship or to provide emergency help if needed. Some however consider the assistance cavers give each other as a typical team sport activity. The term potholing refers to the act of exploring potholes , a word originating in the north of England for predominantly vertical caves . Clay Perry , an American caver of the 1940s, wrote about a group of men and boys who explored and studied caves throughout New England . This group referred to themselves as spelunkers ,

1071-689: A lower state of tune than that of the Mini-Cooper 'S'), the Mark IV and its cousin the Mark III MG Midget had several changes which were more than cosmetic. Most notable is the change from a removable convertible top, which had to be stowed in the boot, to a permanently affixed, folding top of greatly improved design, which was much easier to use. Separate brake and clutch master cylinders were fitted, as car manufacturers' thoughts began to turn to making their products safer. On US market versions

1190-600: A model name used by MG from the late 1920s through to the mid-1950s. Enthusiasts often refer to these later Sprites and Midgets collectively as "Spridgets." The MG-badged version of the car continued in production for several years after the Austin-Healey brand ceased to exist. The Sprite quickly became affectionately known as the "frogeye" in the UK and the "bugeye" in the US, because its headlights were prominently mounted on top of

1309-606: A model name which had been a great success for the MG Car Company in the 1930s and again as the T-type Midget in the period from 1945 to 1955. The Midget was to prove more popular with the public than the Sprite and by 1972 had completely supplanted it within the BMC range. In October 1962, both Sprites and Midgets were given a long-stroke 1098 cc engine (engine code 10CG), which was also fitted in single carburettor form to

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1428-525: A particular species found in a cave may live within that cave alone, and be found nowhere else in the world, such as Alabama cave shrimp . Cave-dwelling species are accustomed to a near-constant climate of temperature and humidity, and any disturbance can be disruptive to the species' life cycles. Though cave wildlife may not always be immediately visible, it is typically nonetheless present in most caves. Bats are one such fragile species of cave-dwelling animal. Bats which hibernate are most vulnerable during

1547-399: A pressed-steel chassis, a gated 4-speed transmission, pushrod-actuated overhead inlet valves , a honeycomb radiator, low-tension magneto ignition , a long wheelbase, a low center of mass and a very effective suspension system. The overall result was a "safe and well-balanced machine" with a higher performance than any other contemporary production car. At the 1903 Gordon Bennett Cup ,

1666-534: A pristine floor of sand or silt which may be thousands of years old, dating from the last time water flowed through the cave. Such deposits may easily be spoiled forever by a single misplaced step. Active formations such as flowstone can be similarly marred with a muddy footprint or handprint, and ancient human artifacts, such as fiber products, may even crumble to dust under all but the most gentle touch. In 1988, concerned that cave resources were becoming increasingly damaged through unregulated use, Congress enacted

1785-427: A production Simplex 60 hp was entered only due to a specially-built 90 hp racing car being destroyed in a fire; the 60 hp famously went on to win the race. The 1910 Austro-Daimler 27/80 is another early sports car which had success in motor racing. The 27/80 was designed by Ferdinand Porsche , who drove the car to victory in the 1910 Prince Henry Tour motor race. The Vauxhall and Austro-Daimler —like

1904-465: A purchaser to specify various choices of engine, transmission suspension, paint and trim. Keith Brading started Frogeye Car company on the Isle of Wight in the 1980s. The first examples of these cars were restoration kits which used a ladder frame chassis to do away with the often rusted-out original body shell. Brading was known to Geoffrey Healey through a mutual friend and because he, at one stage, owned

2023-726: A streamlined body, built in Birmabright alloy at Healey's Warwick workshops by Bill Buckingham and Terry Westwood. These cars were powered by BMC's Courthouse Green's tuned engines and eventually produced a reliable 110 bhp, which enabled a top speed of around 150 mph on the Mulsanne Straight . One-off gearboxes were also made at Courthouse Green, with MGB gearboxes modified with an externally mounted 5th gear and overdrive in some cases. BMC works entries recorded class wins at Sebring with drivers including Stirling Moss, Bruce McLaren and Steve McQueen, as well as competing in

2142-663: A term derived from the Latin spēlunca ("cave, cavern, den"). This is regarded as the first use of the word in the Americas . Throughout the 1950s, spelunking was the general term used for exploring caves in US English . It was used freely, without any positive or negative connotations, although only rarely outside the US. In the 1960s, the terms spelunking and spelunker began to be considered déclassé among experienced enthusiasts. In 1985, Steve Knutson – editor of

2261-424: A time. This is particularly the case when exploring or mapping extensive cave systems, where it would be impractical to retrace the route back to the surface regularly. Such long trips necessitate the cavers carrying provisions, sleeping, and cooking equipment. Caves can be dangerous places; hypothermia, falling , flooding , falling rocks and physical exhaustion are the main risks. Rescuing people from underground

2380-452: Is an iconic sports car of the early 1960s, due to its attractive styling and claimed top speed of 241 km/h (150 mph). The E-type was produced for 14 years and was initially powered by a six-cylinder engine, followed by a V12 engine for the final generation. In 1962, the MG B introduced a new era of affordable lightweight four-cylinder roadsters. The MG B used a unibody construction and

2499-400: Is difficult and time-consuming, and requires special skills, training, and equipment. Full-scale cave rescues often involve the efforts of dozens of rescue workers (often other long-time cavers who have participated in specialized courses, as normal rescue staff are not sufficiently experienced in cave environments), who may themselves be put in jeopardy in effecting the rescue. This said, caving

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2618-413: Is not necessarily a high-risk sport (especially if it does not involve difficult climbs or diving). As in all physical sports, knowing one's limitations is key. Caving in warmer climates carries the risk of contracting histoplasmosis , a fungal infection that is contracted from bird or bat droppings. It can cause pneumonia and can disseminate in the body to cause continued infections. In many parts of

2737-406: Is notable for using a three-seat layout, where the front row consists of a centrally-located driver's seat. The location of the engine and driven wheels significantly influence the handling characteristics of a car and are therefore crucial in the design of a sports car. Traditionally, most sports cars have used rear-wheel drive with the engine either located at the front ( FR layout ) or in

2856-483: Is still owned by Keith Brading. Another “engineering superstar” who also contributed to the Healey Frogeye development was John Ackroyd who designed Thrust2 , which held the world land speed record from 4 October 1983 to 25 September 1997. The Frogeye Car Company was a sideline to Keith Brading's main business, and no cars have been manufactured since 1998. On 24 May 2008, the official UK golden anniversary of

2975-434: Is used, to provide some abrasion protection while remaining as cool as possible. Wetsuits may be worn if the cave is particularly wet or involves stream passages. On the feet boots are worn – hiking-style boots in drier caves, or rubber boots (such as wellies ) often with neoprene socks ("wetsocks") in wetter caves. Knee -pads (and sometimes elbow -pads) are popular for protecting joints during crawls. Depending on

3094-520: The Audi RS 2 Avant . Ford Europe withdrew from the sports car market at the end of 1986 when the Capri was discontinued after a production run of nearly two decades. There was no direct successor, as Ford was concentrating on higher-performance versions of its hatchback and saloon models at the time. In 1989, a new generation of Lotus Elan roadster was released which used a front-wheel drive layout,

3213-541: The BMW 303 , Citroën Traction Avant and Fiat 508 — offered similar handling and comfort to the more expensive sports cars. Powerful, reliable, and economical (although softly suspended) American saloons began to be imported to Europe in significant numbers. Sports car ownership was increased through models such as the Austin 7 and Wolseley Hornet six , however many of these sports cars did not offer any performance upgrades over

3332-623: The Bentley Speed Six (1928-1930), with the former famously described by Bugatti's founder as "the fastest lorry in the world". Between the Great Depression and the World War II the pre-war era was a period of decline in importance for sports car manufacturers, although the period was not devoid of advances, for example streamlining . Cheap, light-weight family sedans with independent front suspension— such as

3451-511: The Dent de Crolles cave system near Grenoble , which became the deepest explored system in the world (-658m) at that time. The lack of available equipment during the war forced Pierre Chevalier and the rest of the team to develop their own equipment, leading to technical innovation. The scaling-pole (1940), nylon ropes (1942), use of explosives in caves (1947) and mechanical rope-ascenders (Henri Brenot's "monkeys", first used by Chevalier and Brenot in

3570-581: The Donald Healey Motor Company . There was no direct successor, as BL's extensive range already contained the MG Midget, which was identical to the Sprite except for badging, and the similarly dimensioned and priced Triumph Spitfire . The Sprite (and its MG Midget sibling) have been successful club level race cars since their launch and continue to race in various events to the present day. International events were entered throughout

3689-610: The Federal Cave Resources Protection Act , giving land management agencies in the United States expanded authority to manage cave conservation on public land. Cavers in many countries have created organizations for the administration and oversight of caving activities within their nations. The oldest of these is the French Federation of Speleology (originally Société de spéléologie) founded by Édouard-Alfred Martel in 1895, which produced

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3808-520: The Jensen FF became the first sports car to use all-wheel drive . The Ford Capri is a 2+2 coupe that was produced from 1968 to 1986 and intended to be a smaller European equivalent of the Ford Mustang. A main rival to the Capri was Opel Manta , which was produced from 1970 to 1988. The 1973-1978 Lancia Stratos was a mid-engined two-seat coupe that was powered by a Ferrari V6 engine. This

3927-426: The National Speleological Society (NSS) publication American Caving Accidents  – made the following distinction: …Note that (in this case) the term 'spelunker' denotes someone untrained and unknowledgeable in current exploration techniques, and 'caver' is for those who are. This sentiment is exemplified by bumper stickers and T-shirts displayed by some cavers: "Cavers rescue spelunkers". Nevertheless, outside

4046-432: The rappel rack and the evolution of mechanical ascension systems extended the practice and safety of vertical exploration to a wider range of cavers. Hard hats are worn to protect the head from bumps and falling rocks. The caver's primary light source is usually mounted on the helmet in order to keep the hands free. Electric LED lights are most common. Many cavers carry two or more sources of light – one as primary and

4165-520: The "thrill of driving" or are marketed "using the excitement of speed and the glamour of the (race)track" However, other people have more specific definitions, such as "must be a two-seater or a 2+2 seater" or a car with two seats only. In the United Kingdom, early recorded usage of the "sports car" was in The Times newspaper in 1919. The first known use of the term in the United States

4284-559: The 1100 cc Spiders. The Innocenti Spider originally sold well in Italy, with production running at 13 cars per day in 1962, but it had a hard time competing against the cheaper Sprite in export markets. As more modern competitors arrived and as the British-built Sprite was modernised, sales dropped precipitously, with only 63 cars built in 1965. Thus, Innocenti presented the reworked Innocenti Coupé in September 1966, still with

4403-821: The 1890s, Balch was introduced to the caves of the Mendip Hills . One of the oldest established caving clubs, Yorkshire Ramblers' Club , was founded in 1892. Caving as a specialized pursuit was pioneered by Édouard-Alfred Martel (1859–1938), who first achieved the descent and exploration of the Gouffre de Padirac , in France, as early as 1889 and the first complete descent of a 110-metre wet vertical shaft at Gaping Gill in 1895. He developed his own techniques based on ropes and metallic ladders. Martel visited Kentucky and notably Mammoth Cave National Park in October 1912. In

4522-403: The 1905 Isotta Fraschini Tipo D, the 1906 Rolls-Royce Silver Ghost , the 1908 Delage , the 1910 Bugatti Type 13 , and the 1912 DFP 12/15 . Early motor racing events included the 1903 Paris–Madrid race , the 1905-1907 Herkomer Trophy, the 1908-1911 Prince Henry Tour and the 1911–present Monte Carlo Rally . The Prince Henry Tours (which were similar to modern car rallies) were among

4641-725: The 1920s famous US caver Floyd Collins made important explorations in the area and in the 1930s, as caving became increasingly popular, small exploration teams both in the Alps and in the karstic high plateaus of southwest France ( Causses and Pyrenees ) transformed cave exploration into both a scientific and recreational activity. Robert de Joly , Guy de Lavaur and Norbert Casteret were prominent figures of that time, surveying mostly caves in Southwest France. During World War II , an alpine team composed of Pierre Chevalier , Fernand Petzl , Charles Petit-Didier and others explored

4760-495: The 1921 Coppa Florio . Another approach— such as that used by Morris Garages— was to convert touring cars into sports cars. The first 24 Hours of Le Mans race for sports cars was held in 1923, although the two-seat sports cars only competed in the smallest class, with the majority of cars entered being four-seat fast touring cars. "This race, together with the Tourist Trophy Series of Races , organised after

4879-404: The 1948 Ferrari 166 S . A new concept altogether was the modern Gran Turismo class from Italy, which was in effect unknown before the war: sustained high-speed motoring from relatively modest engine size and compact closed or berlinetta coachwork. The 1947 Maserati A6 1500 two-seat berlinetta was the first production model from Maserati. In Germany, the motor industry was devastated by

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4998-406: The 1960s and surprisingly good results were achieved, including a 12th-place finish at Le Mans in 1965. The works cars began with use of a commercially available fibreglass-bodied Sprite (with a Falcon body) before utilising lightweight body panels of standard appearance. By the mid-60s, use was made of the wind-tunnel at Longbridge. Barry Bilbie (the chassis designer) utilised the results to produce

5117-499: The 1980 Deutsche Rennsport Meisterschaft and Giro d'Italia automobilistico marathon. The Montecarlo was a basis for the silhouette racing car , Lancia Rally 037 . In the 1970s, turbocharging began to be adopted by sports cars, such as the BMW 2002 Turbo in 1973, the first Porsche 911 Turbo in 1975, and the Saab 99 Turbo in 1978. Turbocharging became increasingly popular in the 1980s, from relatively affordable coupes such as

5236-452: The 1980–1986 Renault Fuego and 1992–1996 Rover 220 Coupé Turbo , to expensive supercars such as the 1984-1987 Ferrari 288 GTO and 1987-1992 Ferrari F40 . In the late 1980s and early 1990s, several manufacturers developed supercars that competed for production car top speed records . These cars included the 1986–1993 Porsche 959 , 1991–1995 Bugatti EB 110 , 1992–1994 Jaguar XJ220 and 1993–998 McLaren F1 . The 1980-1995 Audi Quattro

5355-506: The 1990s, all-wheel drive has become more common in sports cars. All-wheel drive offers better acceleration and favorable handling characteristics (especially in slippery conditions), but is often heavier and more mechanically complex than traditional layouts. Examples of all-wheel drive sports cars are the Lamborghini Huracan , Bugatti Veyron , and Nissan GT-R . Rear engine layouts are not typical for sports cars, with

5474-522: The 1995-2002 MG F , the 1996–present Porsche Boxster and the 1998–present Audi TT . Potholing The challenges involved in caving vary according to the cave being visited; in addition to the total absence of light beyond the entrance, negotiating pitches , squeezes, and water hazards can be difficult. Cave diving is a distinct, and more hazardous, sub-speciality undertaken by a small minority of technically proficient cavers. In an area of overlap between recreational pursuit and scientific study,

5593-427: The 5.20x13 size, although later frogeyes shipped to North America wore 5.60x13 Dunlop crossplies. There were no exterior door handles – the driver and passenger were required to reach inside to open the door. There was also no boot lid, owing to the need to retain as much structural integrity as possible, and access to the spare wheel and luggage compartment was achieved by tilting the seat-backs forward and reaching under

5712-571: The American Tom Tjaarda, then working at Carrozzeria Ghia. The Innocenti 950 spider and later 1100 spider were produced from 1961 until 1968. A car with hardtop tested by the British magazine The Motor in 1961 had a top speed of 85.8 mph (138.1 km/h) and could accelerate from 0–60 mph (97 km/h) in 20.0 seconds. A fuel consumption of 43.5 miles per imperial gallon (6.49 L/100 km; 36.2 mpg ‑US )

5831-533: The Austin A35. The front suspension was a coil spring and wishbone arrangement, with the arm of the Armstrong lever shock absorber serving as the top suspension link. The rear axle was both located and sprung by quarter-elliptic leaf springs, again with lever-arm shock absorbers and top links. The road wheels were 13" and all cars were invariably fitted with Dunlop crossply tyres, usually their Gold Seal model in

5950-606: The Austin A40 and Morris Minor 1000 (which nevertheless remained the Minor 1000). A strengthened gearbox with Porsche (baulk-ring) synchromesh was introduced to cope with the extra power – 56 bhp. Front disc brakes were also introduced at the same time and wire wheels became an option. 31,665 Mark II Sprites were made. Innocenti also produced their own version of the Sprite, using the standard production underframe (initially shipped out from England), but with Italian styling by

6069-593: The Austin-Healey Sprite was developed into a formidable competition car, assuming many variants by John Sprinzel , Speedwell and WSM. Many owners use their Austin Healey Sprites in competition today, fifty years after its introduction. The Mark II announced at the end of May 1961 used the same 948 cc engine (engine code 9CG), but with larger twin 1 1 ⁄ 4  inch SU carburettors, increasing power to 46.5 bhp. A close-ratio gearbox

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6188-474: The Italian market, slotting nicely between the smaller Fiat 850 Coupé and the bigger Fiat 124 Sport Spider . Only 794 were built when production ended in 1968. The Lenham Motor Company of Kent, founded in 1960, was, and still is, one of the once many "cottage industry" automotive companies providing specialist conversions based upon commercial brand platforms. Best known for its Spridget coupé conversions and

6307-468: The Mercedes Simplex 60 hp— were production fast touring cars. The 1912 Hispano-Suiza Alfonso XIII is also considered one of the earliest sports cars, as it was a "purpose built, high performance, two-seater production automobile". The model was named after King Alfonso XIII of Spain , a patron of the car's chief designer and an enthusiast for the marque. Other early sports cars include

6426-772: The Targa Florio and Mugello sports car races. Sprites were imported into Australia in completely knocked down ( CKD ) kit form and assembled by the Pressed Metal Corporation at Enfield , in New South Wales . Models assembled in Australia included the Mk 1, 2, 2A, 3 and 3A. At the 1960 Turin Auto Show, BMC's Italian partner Innocenti showed a small Spider built upon Sprite underpinnings. The car

6545-638: The big-Healey based Lenham Healey (a replica of the Healey Silverstone), the firm also produced hard-tops for Jaguar E-types, Triumphs, the Jensen-Healey, the Lotus Elan and for the MGB. The Tifosi Rana Frogeye Sprite replica retains a significant amount of the character and appeal of the original version by using the MG Midget as its basis. As the MG Midget traces its roots directly back to

6664-492: The bonnet, inboard of the front wings. The car's designers had intended that the headlights could be retracted, with the lenses facing skyward when not in use; a similar arrangement was used many years later on the Porsche 928 . However, cost-cutting by BMC led to the flip-up mechanism being deleted. Therefore, the headlights were simply fixed in a permanently upright position, giving the car its distinctive "cute" feature. The body

6783-479: The car appeared during the next year or two, all conforming to the same basic design and earning for themselves a reputation second to none for fast and reliable travel. The 60-h.p. cars were announced late in 1902. The cars were possessed of a very real performance superior to anything else which could be bought at the time... and the model achieved an almost invincible position among the fast cars of its day. The Sports Car: Development and Design The basis for

6902-467: The caving community, "spelunking" and "spelunkers" predominately remain neutral terms referring to the practice and practitioners, without any respect to skill level. In the mid-nineteenth century, John Birkbeck explored potholes in England, notably Gaping Gill in 1842 and Alum Pot in 1847–8, returning there in the 1870s. In the mid-1880s, Herbert E. Balch began exploring Wookey Hole Caves and in

7021-411: The development of performance cars such as the 1910 Vauxhall Prince Henry , 1910 Sunbeam 12/16 , 1910 Talbot 25 hp , 1910 Straker-Squire 15 hp and 1913 Star 15.9 hp . Following the halt in sports car production caused by World War I , Europe returned to manufacturing automobiles from around 1920. It was around this time that the term 'Sports Car' began to appear in the motor catalogues, although

7140-400: The early 1920s, the cost to produce a racing car was not significantly higher than a road car, therefore several manufacturers used the design from the current year's racing car for the next year's sports car. For example, the 1921 Ballot 2LS based on the racing car that finished third at the 1921 French Grand Prix. The Benz 28/95PS was also a successful racing car, with victories including

7259-444: The environment of the cave being explored, and the local culture. In cold caves, the caver may wear a warm base layer that retains its insulating properties when wet, such as a fleece ("furry") suit or polypropylene underwear, and an oversuit of hard-wearing (e.g., cordura ) or waterproof (e.g., PVC ) material. Lighter clothing may be worn in warm caves, particularly if the cave is dry, and in tropical caves thin polypropylene clothing

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7378-493: The era but these features were expensive to produce and unpopular with buyers so only around 20 cars were produced before these reverted to the original polished metal appearance. 22,790 Mark IV Sprites were made. Engine: The Healey connection was discontinued in 1971, so the final 1,022 Sprites built were simply Austin Sprites. This was a cost-cutting move of Donald Stokes ', enabling British Leyland to stop paying royalties to

7497-463: The exact origin of the name is not known. The decade that followed became known as the vintage era and featured rapid technical advances over the preceding Brass Era cars . Engine performance benefited from the abandonment of " tax horsepower " (where vehicles were taxed based on bore and number of cylinders, rather than actual power output) and the introduction of leaded fuel , which increased power by allowing for higher compression ratios . In

7616-472: The first supercars . Other significant European models of the 1960s and 1970s which might be considered supercars today are the Ferrari 250 GTO (1962-1964), Ferrari 250 GT Lusso (1963-1964), Ferrari 275 GTB/4 (1966-1968), Maserati Ghibli (1967-1973), Ferrari Daytona (1968-1973), Dino 246 (1969-1974), De Tomaso Pantera (1971-1993), Ferrari 308 GTB (1975-1980) and BMW M1 (1978-1981). In 1966,

7735-528: The first World War by the R.A.C. , appealed to the public imagination and offered to the manufacturers of the more sporting cars an excellent opportunity for boosting sales of their products." The classic Italian road races— the Targa Florio , and the Mille Miglia (first held in 1927)— also captured the public's imagination. By 1925, the higher profits available for four-seater cars resulted in

7854-478: The first periodical journal in speleology, Spelunca . The first University-based speleological institute in the world was founded in 1920 in Cluj-Napoca , Romania, by Emil Racovita , a Romanian biologist, zoologist, speleologist and explorer of Antarctica. The British Speleological Association was established in 1935 and the National Speleological Society in the US was founded in 1941 (originally formed as

7973-464: The idea provided by the Jaguar D-type, with rear suspension forces routed through the bodyshell's floor pan. The Sprite's chassis design was the world's first volume-production sports car to use unitary construction, where the sheet metal body panels (apart from the bonnet) take many of the structural stresses. The original metal gauge (thickness of steel) of the rear structure specified by Bilbie

8092-485: The introduction of squared-off rear wheel arches to retain enough metal in the rear structure to give good rigidity. The result was a much less eccentric-looking sports car, though at the expense of some 100 lbs extra weight. In contrast to the 'frogeye', the later cars are often collectively referred to as square-bodied Sprites by enthusiasts. An MG version of the car was introduced in May 1961 as 'the new Midget,' reviving

8211-714: The introduction of the Austin Healey Sprite, "Spridget 50 – The Big Party" was held at the British Heritage Motor Centre at Gaydon , Warwickshire. Up to 1000 Sprites, Midgets and derivatives were in attendance – a record number. The event was jointly organised and promoted by the UK's Midget and Sprite Club, Healey Drivers Club, MG Owners Club, Austin Healey Club and MG Car Club – the first time an event of this size has been supported by all of

8330-401: The larger engine sacrificed some of its performance from 1968 on, through the use of smog pumps and other modifications to comply with federal emission control requirements. 1969 was the final year the Sprite was exported to the US. At the same time reversing lamps were made a standard fitment and the cars' electrical system was switched to negative earth and powered by an alternator rather than

8449-586: The last unexplored regions on Earth and much effort is put into trying to locate, enter and survey them. In well-explored regions (such as most developed nations), the most accessible caves have already been explored, and gaining access to new caves often requires cave digging or cave diving. Caving, in certain areas, has also been utilized as a form of eco and adventure tourism, for example in New Zealand . Tour companies have established an industry leading and guiding tours into and through caves. Depending on

8568-573: The late 1920s were AC Cars , Alfa Romeo , Alvis , Amilcar , Bignan and Samson, Chenard-Walcker , Delage , Hispano-Suiza , Hotchkiss , Mercedes-Benz and Nazzaro . Two cars from the Vintage Era that would influence sports cars for many years were the Austin Seven and MG M-type "Midget". Successful sports cars from Bentley during this era were the Bentley 3 Litre (1921-1929) and

8687-635: The late 1950s. In 1958, two Swiss alpinists, Juesi and Marti teamed together, creating the first rope ascender known as the Jumar . In 1968 Bruno Dressler asked Fernand Petzl, who worked as a metals machinist, to build a rope-ascending tool, today known as the Petzl Croll , that he had developed by adapting the Jumar to vertical caving. Pursuing these developments, Petzl started in the 1970s a caving equipment manufacturing company named Petzl . The development of

8806-509: The marque-representing clubs. More Healeys, (second edition) Geoffrey Healey 1990 – Published by Haynes ISBN   0-85429-826-6 Sports car A sports car is a type of car that is designed with an emphasis on dynamic performance, such as handling , acceleration, top speed, the thrill of driving, and racing capability. Sports cars originated in Europe in the early 1910s and are currently produced by many manufacturers around

8925-518: The mass-produced cars upon which they were based. The highest selling sports car company of the 1930s was Morris Garages , who produced 'MG Midget' models of the M-Type , J-Type , P-Type and T-Type . The K3 version of the K-Type Magnette was a successful racing car, achieving success in the Mille Miglia , Tourist Trophy and 24 Hours of Le Mans . The Bugatti Type 57 (1934-1940)

9044-537: The middle of the vehicle ( MR layout ). Examples of FR layout sports cars include the Caterham 7 , Mazda MX-5 , and the Dodge Viper . Examples of MR layout sports cars are the Ferrari 488 , Ford GT , and Toyota MR2 . To avoid a front-heavy weight distribution , many FR layout sports cars are designed so that the engine is located further back in the engine bay, as close to the firewall as possible. Since

9163-544: The most common layout for sports cars was a roadster (a two-seat car without a fixed roof). However, there are also several examples of early sports cars with four seats. Sports cars are not usually intended to transport more than two adult occupants regularly, so most modern sports cars are generally two-seat or 2+2 layout (two smaller rear seats for children or occasional adult use). Larger cars with more spacious rear-seat accommodation are usually considered sports sedans rather than sports cars. The 1993-1998 McLaren F1

9282-434: The most devoted and serious-minded cavers become accomplished at the surveying and mapping of caves and the formal publication of their efforts. These are usually published freely and publicly, especially in the UK and other European countries, although in the US they are generally more private. Although caving is sometimes categorized as an " extreme sport ," cavers do not commonly use this terminology and typically dislike

9401-610: The nature of the cave, gloves are sometimes worn to protect the hands against abrasion or cold. In pristine areas and for restoration, clean oversuits and powder-free, non-latex surgical gloves are used to protect the cave itself from contaminants. Ropes are used for descending or ascending pitches (single rope technique or SRT) or for protection. Knots commonly used in caving are the figure-of-eight - (or figure-of-nine -) loop, bowline , alpine butterfly , and Italian hitch . Ropes are usually rigged using bolts , slings , and carabiners . In some cases cavers may choose to bring and use

9520-755: The notable exception of the Porsche 911 . The front-wheel drive layout with the engine at the front ( FF layout ) is generally the most common for cars, but it is not as common among traditional sports cars. Nonetheless, the FF layout is used by sport compacts and hot hatches such as the Mazdaspeed3 . Sports cars with an FF layout include the Fiat Barchetta , Saab Sonett , or Opel Tigra . The ancestor of all high-performance cars had its origin in Germany. The 28-h.p. Cannstatt-Daimler racing car of 1899

9639-446: The option of the seats, door trim and floor carpets in beige rather than the standard black. 1970-model year Sprites were fitted with new cast-alloy looking ventilated wheels although they were still made of steel although the option for wire-spoke wheels remained. As launched the 1970 Sprites had their windscreen frames and windscreen wiper arms painted 'anti-dazzle' matt black as was popular on modern American muscle cars and rally cars of

9758-573: The original Austin Healey ‘Frogeye’, the Tifosi replica perhaps merits the sobriquet "Spridget" even more than the originals. They are supplied and/or built by Halls Garage near Bourne in Lincolnshire, home of the now defunct BRM Formula 1 racing cars. The Tifosi Rana replica has a fibreglass body with upgrades such as external door handles and wind-up windows as standard. A "Custom package" allows

9877-430: The others as backup in case the first fails. More often than not, a second light will be mounted to the helmet for quick transition if the primary fails. Carbide lamp systems are an older form of illumination, inspired by miner's equipment, and are still used by some cavers, particularly on remote expeditions where electric charging facilities are not available. The type of clothes worn underground varies according to

9996-456: The philosophy of achieving performance through minimizing weight and has been rated as one of the top 10 sports cars of the 1960s. The Elan featured fibreglass bodies, a backbone chassis, and overhead camshaft engines. A different style of roadster was the AC Cobra , released in 1962, which was fitted with V8 engines up to 7.0 L (427 cu in) in size by Shelby . The Porsche 911

10115-423: The production of two-seat sports cars being limited to smaller manufacturers such as Aston-Martin (350 Astons built from 1921 to 1939) and Frazer-Nash (323 cars built from 1924 to 1939). Then by the late 1920s, the cost of producing racing cars (especially Grand Prix cars) escalated, causing more manufacturers to produce cars for the growing sports car market instead. Significant manufacturers of sports cars in

10234-412: The rear deck, a process likened to potholing by many owners, as the space available was dark but cavernous. Engine: A car was tested by the British magazine The Motor in 1958. It had a top speed of 82.9 mph (133.4 km/h) and could accelerate from 0–60 mph (97 km/h) in 20.5 seconds. Fuel consumption of 43 miles per imperial gallon (6.6 L/100 km; 36 mpg ‑US )

10353-477: The same 1100 engine as seen in late Spiders. The badging on the car simply read "Innocenti C". The Coupé's all-new bodywork designed by Sergio Sartorelli was wider and longer than the Spider's, and the wheelbase was extended by 150 mm to 2,180 mm (85.8 in). The floorpan was reworked to allow for the seats to be mounted lower than in a Sprite, making the cabin less cramped. It was competitively priced in

10472-505: The same cosmetic features, differing only in their badges. Alongside a new range of body colours, both cars now had the same grille, based on the plainer square-mesh design of the MkII-onwards Sprite but now finished in satin black with the addition of a chrome embellisher. The body sills were painted satin black with a chrome strip between them and the upper bodywork and the name "SPRITE" was applied in chrome capital letters on

10591-431: The sill just behind the front wheelarch (MG Midgets had their own badge in the same style). Slimmer bumpers were fitted, with those at the rear changing to two quarter-bumpers with the gap in the middle filled by a square number plate . Rubber-capped overriders were standard fitment front and rear. The seats were now a slimmer, flatter design with a more modern upholstery pattern. Some body colours could now be ordered with

10710-469: The slightest touch and some by impacts as slight as a breath. Research suggests that increased carbon dioxide levels can lead to "a higher equilibrium concentration of calcium within the drip waters feeding the speleothems, and hence causes dissolution of existing features." In 2008, researchers found evidence that respiration from cave visitors may generate elevated carbon dioxide concentrations in caves, leading to increased temperatures of up to 3 °C and

10829-558: The sporting events of the period, bringing renown to successful entrants. The Prince Henry Tours started the evolution of reasonably large and technically advanced production sports cars. In England, the development of sporting cars was inhibited by the Motor Car Act 1903 , which imposed a speed limit of 20 mph (32 km/h) on all public roads. This led to the 1907 opening of the Brooklands motor circuit , which inspired

10948-408: The sports car is traced to the early 20th century touring cars and roadsters , and the term 'sports car' would not be coined until after World War One. A car considered to be "a sports-car years ahead of its time" is the 1903 Mercedes Simplex 60 hp , described at the time as a fast touring car and designed by Wilhelm Maybach and Paul Daimler . The Mercedes included pioneering features such as

11067-476: The sports car, but also the most important and diverse technical developments [and] very rapid and genuine improvement in the qualities of every modern production car; assisted by new design and manufacturing techniques a consistently higher level of handling properties has been achieved." In Italy, a small but wealthy market segment allowed for the manufacture of a limited number of high-performance models directly allied to contemporary Grand Prix machines, such as

11186-514: The term being used in reference to caving, as it implies a disregard for safety. Many caving skills overlap with those involved in canyoning and mine and urban exploration . Caving is often undertaken for the enjoyment of the outdoor activity or for physical exercise, as well as original exploration, similar to mountaineering or diving . Physical or biological science is also an important goal for some cavers, while others are engaged in cave photography. Virgin cave systems comprise some of

11305-413: The two prototype 3000 coupes. Geoffrey Healey notes that Brading's re-design of the "Frogeye" was shortly to receive approval from Donald Healey, calling the concept "brilliant", and after some modifications, "just the vehicle to carry the Healey approval". The last sports car to have his father's approval benefited from Geoffrey Healey's direct input until his unexpected death in 1994 and the car he used

11424-426: The type of cave and the type of tour, the experience could be adventure-based or ecological-based. There are tours led through lava tubes by a guiding service (e.g. Lava River Cave , the oceanic islands of Tenerife , Iceland and Hawaii ). Caving has also been described as an "individualist's team sport" by some, as cavers can often make a trip without direct physical assistance from others but will generally go in

11543-473: The upper links fitted to the quarter-elliptic models being deleted. Though scarcely sybaritic, these changes helped the Sprite and Midget compete with the recently released Triumph Spitfire. 25,905 Mark III Sprites were made. Engine: The next upgrade was presented at the London Motor Show in October 1966. Besides receiving the larger 1275 cc engine (which disappointed enthusiasts by being in

11662-478: The war, but a small number of manufacturers returned it to prominence. In 1948, the Porsche 356 was released as the debut model from Porsche. The significance of the Porsche 356 and its successors was described in 1957 as "future historians must see them as among the most important of mid-century production cars". The 1954 Mercedes-Benz 300 SL is another significant car from this era. The 1961 Jaguar E-Type

11781-664: The warmer months when they are most sensitive and vulnerable. Due to an affliction affecting bats in the northeastern US known as white nose syndrome (WNS), the US Fish & Wildlife Service has called for a moratorium effective March 26, 2009, on caving activity in states known to have hibernacula (MD, NY, VT, NH, MA, CT, NJ, PA, VA, and WV) affected by WNS, as well as adjoining states. Some cave passages may be marked with flagging tape or other indicators to show biologically, aesthetically, or archaeologically sensitive areas. Marked paths may show ways around notably fragile areas such as

11900-408: The winter season, when no food supply exists on the surface to replenish the bat's store of energy should it be awakened from hibernation. Bats which migrate are most sensitive during the summer months when they are raising their young. For these reasons, visiting caves inhabited by hibernating bats is discouraged during cold months; and visiting caves inhabited by migratory bats is discouraged during

12019-427: The world, leptospirosis ("a type of bacterial infection spread by animals" including rats ) is a distinct threat, owing to the presence of rat urine in rainwater or precipitation that enters the caves water system. Complications are uncommon, but can be serious. Safety risks while caving can be minimized by using a number of techniques: Many cave environments are very fragile. Many speleothems can be damaged by even

12138-417: The world. Definitions of sports cars often relate to how the car design is optimised for dynamic performance, without any specific minimum requirements; both a Triumph Spitfire and Ferrari 488 Pista can be considered sports cars, despite vastly different levels of performance. Broader definitions of sports cars include cars "in which performance takes precedence over carrying capacity", or that emphasise

12257-520: Was a one-piece unit, hinged from the back, that swung up to allow access to the engine compartment. The 43 bhp, 948 cc OHV engine (coded 9CC) was derived from the Austin A35 and Morris Minor 1000 models, also BMC products, but upgraded with twin 1 1 ⁄ 8 inch SU carburettors . The rack and pinion steering was derived from the Morris Minor 1000 and the front suspension from

12376-415: Was a pioneering all-wheel drive sports car. The 1995 Porsche 911 Turbo (993) saw the 911 Turbo model switch to all-wheel drive, a drivetrain layout that the model uses to this day. The BMW M3 was released in 1986 and has been produced for every generation since. The 1993-1996 Mercedes-Benz W124 E36 AMG was the mass-produced AMG model. Audi's equivalent division, called "RS", was launched in 1994 with

12495-684: Was an unusual arrangement for a car used to compete in rallying, nonetheless it was very successful and won the World Rally Championship in 1974 , 1975 , and 1976 . The Lancia Montecarlo was produced from 1975 to 1981 and is a mid-engine two-seater, available as a coupé or a targa-top. It was sold as Lancia Scorpion in the USA. Its racing variant, Montecarlo Turbo, won the 1979 World Championship for Makes in its division and overall for 1980 World Championship for Makes and 1981 World Endurance Championship for Makes . Montecarlo also won

12614-627: Was another significant sports car of the pre-war era and is now among the most valuable cars in the world. The T57 was successful in sports car races, including winning the 1937 24 Hours of Le Mans and 1939 24 Hours of Le Mans . Another successful Bugatti sports car was the Bugatti Type 55 (1932-1935), which was based on the Type 51 Grand Prix racing car. The decade following the Second World War saw an "immense growth of interest in

12733-525: Was designed by the Donald Healey Motor Company , with production being undertaken at the MG factory at Abingdon . It first went on sale for £669, using a tuned version of the Austin A-Series engine and as many other components from existing cars as possible to keep costs down. When the Mk. II Sprite was introduced in 1961 it was joined by a badge-engineered MG version, the Midget , reviving

12852-409: Was fitted. The bodywork was completely revamped, with the headlights migrating to a more conventional position in the wings, either side of a full-width grille and a conventional bonnet. At the rear, styling borrowed from the soon-to-be-announced MGB gave a similarly more modern look, with the added advantages of an opening boot lid and conventional rear bumper bar. The addition of the boot lid required

12971-485: Was in 1928. Sports cars started to become popular during the 1920s. The term initially described two-seat roadsters (cars without a fixed roof), however, since the 1970s the term has also been used for cars with a fixed roof (which were previously considered grand tourers ). Attributing the definition of 'sports car' to any particular model can be controversial or the subject of debate among enthusiasts. Authors and experts have often contributed their ideas to capture

13090-445: Was introduced with hinged quarterlights and wind-up side windows. Exterior door handles were provided for the first time, with separate door locks. Though the car could now be secured, with a soft-top roof the added protection was limited. The rear suspension was modified from quarter-elliptic to semi-elliptic leaf springs, which gave a more comfortable ride for a near-negligible weight penalty as well as providing additional axle location,

13209-407: Was introduced, this also had front disc brakes to cope with the extra power. The 1100 has 58 hp (43 kW) and could also be fitted with a removable hardtop. The Spider wasn't a mere reshelling, as the entire bulkhead was moved forward to provide longer doors and a more modern look. Unlike the spartan Frogeye, the Spider also had wind-up windows. 4,790 of the 950 Spiders were built, and 2,074 of

13328-694: Was produced until 1980. Other successful lightweight roadsters include the Triumph Spitfire (1962-1980) and the Alfa Romeo Spider (1966-1993). The Fiat X1/9 (1972-1989) was unusual for its use of a mid-engine design in an affordable roadster model. A late entrant to the affordable roadster market was the 1975 Triumph TR7 , however by the late 1970s the demand for this style of car was in decline, resulting in production ceasing in 1982. The original Lotus Elan (1962-1975) two-seat coupe and roadster models are an early commercial success for

13447-504: Was recorded. The test car cost £678, including taxes of £223. The BMC Competitions Department entered Austin Healey Sprites in major international races and rallies, their first major success coming when John Sprinzel and Willy Cave won their class on the 1958 Alpine Rally . In 1959, the Sprite was introduced to the US market by winning its class in the 12-hour race at Sebring, Florida. Private competitors also competed with much success in Sprites. Because of its affordability and practicality,

13566-603: Was recorded. The test car, which was to de-luxe specification cost £705 including taxes of £208. Engines: The Sprite Mark III was announced in March 1964. It was also marketed as the MG Midget Mark II. Differences between the two were again restricted to minor trim detailing. Although still 1098 cc, the engine had a stronger block casting, and the size of the crankshaft main bearings was increased to two inches (engine code 10CC). A new (slightly) curved-glass windscreen

13685-499: Was reduced by the Austin Design Office during prototype build, however during testing at MIRA (Motor Industry Research Association) distortion and deformation of the rear structure occurred and the original specification was reinstated. The two front chassis legs projecting forward from the passenger compartment mean the shell is not a full monocoque . The front sheet-metal assembly, including the bonnet (hood) and wings,

13804-675: Was released in 1964 and has remained in production since. The 911 is notable for its use of the uncommon rear-engine design and the use of a flat-six engine . Another successful rear-engine sports car was the original Alpine A110 (1961-1977), which was a successful rally car during the Group 4 era. In 1965, the BMW New Class Coupes were released, leading to the BMW 6 Series which remains in production to this day. The Lamborghini Miura (1966) and Alfa Romeo 33 Stradale (1967) mid-engined high-performance cars are often cited as

13923-423: Was styled by Gerry Coker, with subsequent alterations by Les Ireland following Coker's emigration to the US in 1957. The car's distinctive frontal styling bore a strong resemblance to the defunct American 1951 Crosley Super Sport. A total of 48,987 "frogeye" Sprites were made. The problem of providing a rigid structure to an open-topped sports car was resolved by Barry Bilbie, Healey's chassis designer, who adapted

14042-456: Was the first design of Tom Tjaarda 's, drawn for Carrozzeria Ghia . Ghia's partner firm OSI built the bodyshells, when the car entered production in early 1961. The original Innocenti 950 Spider had the Frogeye's 948 cc engine with 43 hp (32 kW), 624 of these were built. Later in 1961 an uprated 46.5 hp (35 kW) was installed. In February 1963 the 1098 cc "S" model

14161-417: Was without a doubt the first attempt to give real performance to a road car. Many of its features, such as a honeycomb radiator and gate gear change, were continued on the much improved version which Paul Daimler designed in 1899-1900. This was of course the famous Mercedes. It also laid down standards of chassis design which were to be followed, almost unthinkingly, for the next thirty years. Several variants of

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