Three-quarter rear view of a Red, 1952, Mk1, Jowett Javelin Jupiter, on display in a car club area of the 2023 Silverstone Festival.


The Jowett Jupiter is a British sports car which was produced by Jowett Cars Ltd of Idle, near Bradford. Following the launch of the all new Jowett Javelin and its successes in competition, Jowett decided to use its power train in a sports car for export in the hope of increasing their inadequate steel allocation. The chassis only was displayed in October at the London Motor Show which opened 28 September 1949 and the complete car for the first time in New York in April 1950 Again the chassis only was given its continental launch at the Geneva Motor Show which opened 16 March 1950. Initially the car was known as the Jowett Javelin Jupiter however the Javelin part of the name was dropped in February 1951. It continued in production until 1954. Jowett through Lawrence Pomeroy of The Motor joined forces with ERA and they persuaded Eberan von Eberhorst, formerly with Auto Union, to come to England. He joined ERA in Dunstable and, amongst other projected development and chassis work, designed and developed what became the Jupiter's tubular steel chassis. The suspension used soft torsion bars and anti-roll bars front and rear with independent suspension at the front. The engine was mounted very far forward ahead of the front axle line with the radiator low behind it over the gearbox. Adjustment of the anti-roll bars easily influenced oversteer and understeer to provide fine suspension tuning. On this torsionally stiff frame Reg Korner of Jowett put a steel framed aluminium drophead coupé body with a bench seat for three people. Eberan's chassis had been designed for a closed coupé and it proved to require strengthening. The anti-roll bars were abandoned. There was no external access to the boot (trunk) and the bonnet (hood) was rear hinged and opened complete with the wings. These cars were only for export, it was hoped coachbuilders would supply the local market.


Size: 5378px × 3607px
Location: Silverstone Circuit, Towcester, Northamptonshire, NN12 8TN
Photo credit: © John Gaffen / Alamy / Afripics
License: Licensed
Model Released: No

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