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1931 Bugatti Type 51 cockpit, with Wilson preselector gearbox. The most common type of pre-selector gearbox was the Wilson, which used an epicyclic design. [5] [6] A precursor to the Wilson gearbox was the manually-controlled epicyclic gearbox used in the 1901–1904 Wilson-Pilcher cars built in the United Kingdom.
Self-Changing Gears was a British company, set up and owned equally by Walter Gordon Wilson and John Davenport Siddeley, to develop and exploit the Wilson or pre-selector gearbox. Self-Changing Gears designed, built and licensed transmissions for various applications including light and heavy road vehicles, military, marine, and rail vehicles ...
Those five cars all had the new Wilson pre-selector gearbox. [15] The works team also entered their last, unsold, Brooklands Nine taking the Biennial Cup spot. It was the one raced the previous year by Sébilleau / Delaroche and given to Ken Peacock and Bill van der Becke, who had earned the entry in that race finishing fourth. [15] Aston ...
A smaller 18 hp appeared in 1922 and a 2-litre 14 hp was introduced in 1923. 1928 saw the company's first 15 hp six; 1929 saw the introduction of a 12 hp vehicle. This was a pioneering year for the marque, during which it first offered the Wilson preselector gearbox as an optional extra; it became standard issue on all cars from 1933. In 1930 ...
The confusion arises because Wilson designed "epicyclic gearboxes" for the purpose of steering tanks long before his pre-selector gearbox.. March 1917, the Oldbury gearbox trials between 8 different tanks (4 being current production "lozenge" Mark IIs), each fitted with a different transmission.
During 1930 The Daimler Company of Coventry, England began to introduce a transmission system using a fluid coupling and Wilson self-changing gearbox for buses and their flagship cars. By 1933 the system was used in all new Daimler, Lanchester and BSA vehicles produced by the group from heavy commercial vehicles to small cars.
This contrasts with a preselector gearbox, in which the driver selects the next gear ratio and operates the pedal, but the gear change within the transmission is performed automatically. The first usage of semi-automatic transmissions was in automobiles, increasing in popularity in the mid-1930s when they were offered by several American car ...
In 1933 the option of a E.N.V preselector gear-box became available. [3] When new the car was guaranteed for nine years. [ 1 ] However, a condition of the guarantee was that it be returned to the manufacturers every three years for a thorough overhaul and update, which would have been provided only at considerable cost.