MG K-type

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MG K-Type Magnette
Overview
Manufacturer MG
Production1932–1934
approx 250 units
Body and chassis
Class open tourer
sports car
racing car
Chronology
Predecessor M.G. F-Type Magna
Successor MG N-Type Magnette

The MG K-type Magnette is a motor car produced in the United Kingdom by MG from October 1932 to 1934.

United Kingdom Country in Europe

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a sovereign country located off the north-western coast of the European mainland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many smaller islands. Northern Ireland is the only part of the United Kingdom that shares a land border with another sovereign state, the Republic of Ireland. Apart from this land border, the United Kingdom is surrounded by the Atlantic Ocean, with the North Sea to the east, the English Channel to the south and the Celtic Sea to the south-west, giving it the 12th-longest coastline in the world. The Irish Sea separates Great Britain and Ireland. The United Kingdom's 242,500 square kilometres (93,600 sq mi) were home to an estimated 66.0 million inhabitants in 2017.

Contents

Launched at the 1932 London Motor Show, the K-Type replaced the F-Type Magna but having at first a slightly smaller capacity engine it took the name Magnette. The chassis was similar to the Magna but strengthened and had the track increased by 6 inches (150 mm) to 48 inches (1200 mm) and was available in two lengths with a wheelbase of either 94 inches (2388 mm) or 108 inches (2743 mm). The steering was modified with a patented divided track rod which was claimed to reduce kick back at the steering wheel. The brakes were cable operated with 13-inch (330 mm) drums made of "Elektron", a light magnesium alloy, with shrunk in steel liners. Suspension by half-elliptic springs and Hartford friction shock absorbers all round with rigid front and rear axles. Wire wheels with 4.75 x 19 tyres and centre lock fixing were used.

MG F-type

The MG F-type Magna is a six-cylinder-engined car that was produced by MG from October 1931 to 1932. It was also known as the 12/70.

Elektron is the registered trademark of a wide range of magnesium alloys manufactured by a British company Magnesium Elektron Limited.

Magnesium Chemical element with atomic number 12

Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure.

The engines were based on a Wolseley overhead camshaft design used first in the 1930 Wolseley Hornet and subsequently used by MG in the F-Type but subject to a major re-design. The stroke was reduced from 83 mm to 71 mm to reduce the capacity from 1272 cc to 1087 cc and a cross flow cylinder head fitted. Fitted at first with triple SU carburetors it produced 39 bhp (29 kW) at 5500 rpm. In early 1933 a modified version of the engine was announced that had improved valve timing and only two carburettors but the output was up at 41 bhp (31 kW). This engine was called the KB and the previous version, which continued in use, the KA. In late 1933 they were joined by the KD with a larger 1271 cc capacity by returning to the F-Type stroke of 83 mm but with the improved cylinder head and timing power was up to 48.5 bhp (36.2 kW). (The F-Type had only been rated at 37 bhp.) In addition there was the KC engine for the racing cars. This retained the 1087 cc capacity but with the aid of a supercharger power was up at 120 bhp (89 kW) at 6500 rpm.

Wolseley Motors

Wolseley Motors Limited was a British motor vehicle manufacturer founded in early 1901 by the Vickers armaments combine in conjunction with Herbert Austin. It initially made a full range topped by large luxury cars and dominated the market in the Edwardian era. The Vickers brothers died and without their guidance Wolseley expanded rapidly after the war, manufacturing 12,000 cars in 1921, and remained the biggest motor manufacturer in Britain.

Overhead camshaft valvetrain configuration

Overhead camshaft, commonly abbreviated to OHC, is a valvetrain configuration which places the camshaft of an internal combustion engine of the reciprocating type within the cylinder heads and drives the valves or lifters in a more direct manner compared with overhead valves (OHV) and pushrods.

Wolseley Hornet six lightweight saloon car

The Wolseley Hornet is a six-cylinder twelve fiscal horsepower lightweight automobile which was offered as a saloon car, coupé and open two-seater as well as the usual rolling chassis for bespoke coachwork. Produced by Wolseley Motors Limited from 1930 to 1936, the Hornet was unveiled to the public at the end of April 1930. Wolseley had been bought from the receivers by William Morris in 1927.

Drive was to the rear wheels through either a four-speed non-synchromesh gearbox or ENV made pre-selector type.

Preselector gearbox

A preselector or self-changing gearbox is a type of manual gearbox used on a variety of vehicles, most commonly in the 1930s. The defining characteristic of a preselector gearbox is that the manual shift lever is used to "pre-select" the next gear to be used, then a separate control is used to engage this in one single operation, without needing to work a manual clutch.

All the road cars were capable of reaching 75 mph (121 km/h).

K1

MG K1
MG K1.jpg
Overview
Production1932–1934
181 units
Body and chassis
Body style 4-seat open tourer
4-door pillarless saloon
Powertrain
Engine Straight-6 1087 cc

This was the original K having the long chassis and was first shown with the saloon body, KA engine and pre-selector gearbox all costing £445, quite expensive at the time. It was soon joined by a tourer with KB engine and manual gearbox. Later the saloon could also be had with KD engine and pre-selector.

54 K1s with KA engines, 74 with KB engines and 53 with KDs were made. Not many of the saloons were sold and surplus bodies/chassis were later fitted with MG "N" type engines and sold as the MG KN Magnette.

The MG KN Magnette is a coupé that was produced by MG between 1933 and 1934 and was designed to use up surplus bodies made for the unsold MG K-type saloons. These bodies were fitted to the K1 chassis but had the more powerful MG N-type 1271 cc engine.

K2

MG K2
Overview
Production1933–1934
20 units
Body and chassis
Body style 2-seat open tourer
Powertrain
Engine 1087/1271 cc n-line 6

The K2 was the open 2-seater and so had the shorter chassis. It had at first the KB engine and manual box but later cars could have the larger KD with preselector gearbox.

16 were made with KB engines and a further 4 with KD engines.

K3

MG K3
MG K3 sports.jpg
Overview
Production1933–1934
33 units
Body and chassis
Body style 2-seat sports/racer
Powertrain
Engine 1087 cc In-line 6
supercharged

The K3 was the racing variant and used the short chassis. The KC engine at first used a Powerplus supercharger replaced later by a Marshall-made one. They were prominently mounted in front of the engine below the radiator. Preselector gearboxes were used. They were successfully raced in 1933, winning the 1100 cc class in the Mille Miglia driven by Capt. George Eyston and Count Lurani and scoring an outright victory (on handicap) in the Ulster RAC Tourist Trophy (TT) race where the car was driven by Tazio Nuvolari at an average speed of 78.65 m.p.h. The K3's greatest international success came in the 1934 24 Hours of Le Mans, when chassis # K3027 finished 4th overall and won the Index of Performance, as driven by Roy Eccles and C.E.C. "Charlie" Martin. This car is on display at the Simeone Foundation Automotive Museum in Philadelphia, Pennsylvania. The K3 attracted the great names of the racing world – Sir Tim Birkin of Bentley fame, Whitney Straight and 'Hammy' Hamilton. Only 33 were made and as well as the works cars they could be bought for £795 [1] but subsequently quite a few replicas have been made often from the K1 and K2 models. The K3 raced well into the post-war period, and many of the cars did not survive intact. A car-by-car analysis shows that most of them had new bodies, engine changes, or were destroyed.

John Barraclough won the 1949 Australian Hillclimb Championship at Rob Roy driving a K3 Magnette MG K3 Magnette of John Barraclough.jpg
John Barraclough won the 1949 Australian Hillclimb Championship at Rob Roy driving a K3 Magnette

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The Audi R8 LMS Cup is a one-make sports car racing series by Audi based in Asia. Audi R8 LMS Cup cars based on the Audi R8 LMS(GT3).

References

  1. "M.G. Continuity". The Autocar . 14 September 1934.

Further reading