BMW 503 is a two door 2 Gran Turismo produced by German automaker BMW from 1956 to 1959. The company has developed along the 503, the 507 Roadster in an attempt to sell a significant number of luxury cars in the United States. 503 and 507 cost about twice their estimated price and recover their costs. During production from may 1956 to March 1959, it was built 413 units 503. Although it was a prestige model, this led to large losses for BMW.
1. Concept and design. (Концепция и дизайн)
Hanns Grewenig, sales Manager of BMW cars, has repeatedly requested to develop a sports car based on 501 and 502 luxury sedans. In early 1954, influenced by the public reaction to the Mercedes-Benz 300SL and 190SL show cars in new York in February 1954, the management of BMW approved the project.
Max Hoffman, the influential car importer in the United States, saw the early sketches for the BMW Ernst Loof, and invited industrial designer Albrecht von Hertz that he should submit design proposals to BMW. Based on these proposals, BMW contract Savings for design 503 and 507 in November 1954.
503 were 2 Grand Tourer, which was available as a coupe or convertible. It was noted, for that is cleaner and more modern design than the "Baroque angel" 501 based on the sedans. The convertible version of the 503 was the first European convertible with an electric top drive.
2. Design and development. (Проектирование и разработка)
In designing the chassis for the two cars, using as much of the existing sedan 502, engineer Fritz Fiedler developed two new ladder frame, one with the same wheelbase as 502, and a shortened wheelbase. The long-wheelbase version was used in 503. Both cars used the steering system and the system front suspension with 502, then 503 is also used 502s rear suspension. As originally designed, the 503 is used 502s host the remote transmission and shift linkage. Both cars use the braking system developed for the 3.2 sedan, using drum brakes with vacuum assistance. All the 503s were configured for left-hand drive.
Both cars used the 3.2 L version 502s V8 engine developed for the 3.2 sedan, but with two carburetors and with an improved lubrication system using a chain driven oil pump. In 503s V8 has a compression ratio of 7.5:1 and yielded 140 HP 104 kW, 142 HP at 4800 rpm.
503 sixteen inch wheels and a standard gear ratio of 3.90:1 and the gear ratio of 3.42:1 was optional. 503 acceleration from standstill to 100 km / h 62 mph was measured at 13 seconds, top speed is around 503 115 mph 185 km / h.
In September 1957, the drivetrain 503s were revised. The gearbox was bolted to the transmission and the gearshift was moved from the column to the floor.
Hoffman wanted a BMW and sports car GT, which will be placed between triumphs sports cars and Mercedes-Benz 300 SL, the sale price of about$5000. He said BMW it will be about a thousand of their sports cars at a purchase price of DM12.000. After its appearance at the Frankfurt motor show in September 1955, the 503 started production in may 1956 the sale price of DM29.500, while the 507 Roadster sold for DM26.500 when production began seven months.
While a minority, such as Batista "convertible" Farinas, felt 503 exceeds the design of the 507, the 503 has largely eclipsed it. Nevertheless 503 or 507 sold well enough to earn a profit, larger, heavier, clearer, more sold 412 units of the 503 roadsters 507 253. 139 made 503s were convertibles. Production ended in March of 1959.
4. Heritage. (Наследие)
BMW 503 was the first post-war sports coupe. It was replaced by the Bertone bodied car BMW 3200 CS of 1962.
In 1956 BMW 503 Cabriolet with Portuguese plates was due to George C. Scott character in the 1971 movie the last run.
Appears in the 1957 BMW 503 Coupe in the drama bi-Bi-si father brown, Episode 2, series 4, Brewers daughter, first aired January 2016. This car is right hand drive
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