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MAS was an Italian motorcycle manufacturer from 1920 until 1956.
MAS stood, in the context, for "Alberico Seiling Motorcycles" (Motocicli Alberico Seiling).
Seiling was an Italian constructor who developed a variety of motorbikes between 1920 and 1922, and in 1922 started commercial production. His 173 cc overhead valve (OHV) model with an external flywheel proved particularly popular. He also produced a single-cylinder 498 cc OHV model, and from 1928 a twin-cylinder model, also with 498 cc of displacement.
In 1937 an OLHV model with a special cylinder head appeared, with a vertically mounted camshaft, the cylinder valves set horizontally in a separate chamber above the combustion chamber. The combustion mixture was premixed in this separate chamber. By excluding the valves from the combustion chamber itself it was possible to use a 15:1 compression ratio which was by the standards of the time very high. The motor was not a success, however.
Seiling sold the MAS business to the Guidetti brothers in 1938. After this he continued to produce motor cycles in his own name (Seiling: A. Scoppio S.A.) and then, in 1939, he obtained finance to establish a new motorcycle manufacturing business under the name Altea. Altea produced a single-cylinder ohv 198 cc machine. However, this business ended in 1941 due to the general war which had by then broken out across most of Europe.
Gilera is an Italian motorcycle manufacturer founded in Arcore in 1909 by Giuseppe Gilera. In 1969, the company was purchased by Piaggio.
Velocette is a line of motorcycles made by Veloce Ltd, in Hall Green, Birmingham, England. One of several motorcycle manufacturers in Birmingham, Velocette was a small, family-owned firm, selling almost as many hand-built motorcycles during its lifetime, as the mass-produced machines of the giant BSA and Norton concerns. Renowned for the quality of its products, the company was "always in the picture" in international motorcycle racing, from the mid-1920s through the 1950s, culminating in two World Championship titles and its legendary and still-unbeaten 24 hours at over 100 mph (161 km/h) record. Veloce, while small, was a great technical innovator and many of its patented designs are commonplace on motorcycles today, including the positive-stop foot shift and swinging arm rear suspension with hydraulic dampers. The business suffered a gradual commercial decline during the late 1960s, eventually closing in February 1971.
A. J. Stevens & Co. Ltd was a British automobile and motorcycle manufacturer in operation from 1909 to 1931. The company was founded by Joe Stevens in Wolverhampton, England. After the firm was sold, the name continued to be used by Matchless, Associated Motorcycles and Norton-Villiers on four-stroke motorcycles till 1969, and since the name's resale in 1974, on lightweight, two-stroke scramblers and today on small-capacity roadsters and cruisers. The company held 117 motorcycle world records.
An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion chamber in the engine block.
An overhead valve (OHV) engine, sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with earlier flathead engines, where the valves were located below the combustion chamber in the engine block.
In automotive engineering a multi-valve or multivalve engine is one where each cylinder has more than two valves. A multi-valve engine has better breathing and may be able to operate at higher revolutions per minute (RPM) than a two-valve engine, delivering more power.
A flathead engine, otherwise sidevalve engine, is an internal combustion engine with its poppet valves contained within the engine block, instead of in the cylinder head, as in an overhead valve engine.
The Scott Motorcycle Company was owned by Scott Motors (Saltaire) Limited, Shipley, West Yorkshire, England and was a well-known producer of motorcycles and light engines for industry. Founded by Alfred Angas Scott in 1908 as the Scott Engineering Company in Bradford, Yorkshire, Scott motorcycles were produced until 1978.
Phelon & Moore manufactured motorcycles in Cleckheaton, Yorkshire, England from 1904 to 1967 particularly those under the Panther marque. They became identified with one particular design of motorcycle which had a large sloping 40-degree single-cylinder engine as a stressed member of the frame. This design spanned the entire history of the company, starting with a 500 cc model and ending with a 645 cc model.
A motorcycle engine is an engine that powers a motorcycle. Motorcycle engines are typically two-stroke or four-stroke internal combustion engines, but other engine types, such as Wankels and electric motors, have been used.
The Calthorpe Motor Company based in Bordesley Green, Birmingham, England made a range of cars, motorcycles and bicycles from 1904 to 1932.
The intake/inlet over exhaust, or "IOE" engine, known in the US as F-head, is a four-stroke internal combustion engine whose valvetrain comprises OHV inlet valves within the cylinder head and exhaust side-valves within the engine block.
The Cotton Motor Company, was a British motorcycle manufacturer of 11a Bristol Road, Gloucester, and was founded by Frank Willoughby Cotton in 1918. F.W. presided over the company until his retirement in 1953. The company was reconstituted as E. Cotton (Motorcycles) Ltd, and traded until 1980. The marque was later resurrected in the late 1990s by a business which manufactured replicas of earlier machines.
Levis motorcycles (1911–1940), manufactured by Butterfields Ltd of Birmingham, England were for many years one of England's leading marques of two-stroke motorcycle. Levis built two-stroke machines from 1911, adding a line of four-strokes in 1928, which ran to 1941 when production ceased.
Rex, Rex Motorcycles, Rex-Acme, was a car and motorcycle company which began in Birmingham, England in 1900. Rex soon merged with a Coventry maker of bicycles and cars named Allard and then later in 1922 the company merged with Coventry's 'Acme' motorcycle company forming 'Rex Acme'. The company existed until 1933, and, in its heyday, was considered one of the greatest names in the British motorcycle industry.
Bianchi motorcycles were made from 1897 to 1967 by F.I.V. Edoardo Bianchi S.p.A, a company which today is a major Italian bicycle manufacturer, and who also produced automobiles from 1900 to 1939. Edoardo Bianchi started his bicycle manufacturing business in a small shop on Milan’s Via Nirone in 1885. Bianchi was a prominent name in the motorcycle racing world from 1925 to 1930.
Blackburne was a trade name of Burney and Blackburne Limited a British manufacturer of motorcycles from 1913 to 1922 at Tongham near Farnham, Surrey. They were also a major supplier of engines to other motor cycle and light car makers and continued to make these until 1937. Burney and Blackburne also made small aircraft engines.
Tornax was a motorcycle manufacturer in Wuppertal, Germany.
Victoria was a bicycle manufacturer in Nürnberg, Germany that made motorcycles from about 1901 until 1966. It should not be confused with a lesser-known, unrelated Victoria Motorcycle Company in Glasgow, Scotland that made motorcycles between 1902 and 1928.
ABC motorcycles was a British motorcycle manufacturer established in 1914 by Ronald Charteris in London. Several British motorcycle firms started up with the name "ABC", including Sopwith. The All British Engine Company Ltd. of London was founded in 1912 and later changed to ABC Motors Ltd. With chief engineer Granville Bradshaw, Charteris built a range of engines throughout the First World War. From 1913 ABC produced motorcycle engines.
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