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Motor Cycle - Ariel Mk. 1, Square Four, 1950 Object Reg. No: ST 034969

Founded in 1898, Ariel Motors of Birmingham, UK produced three-wheeler De Dion cars before beginning motor cycle production in 1902. Initially the company built conventional single cylinder and V-twin engined designs. In 1929, Ariel developed a distinctive and unusual four-cylinder engine in a square layout with a single overhead camshaft. The 'Square Four' was designed by Edward Turner and was nick-named the "Squariel" becoming a popular design which was developed from the original 497cc model in 1931 to 997cc of the Ariel Mk. 2. Square Four. The much-modified Square Four remained in production until 1958 making it one of the most successful four-cylinder designs of all time. Ariel merged with BSA in the early 1960s and the brand disappeared by 1970 as Japanese motorcycles dominated the market. In Melbourne, the first agency for Ariel was held by Con McRae but was then held by Milledge Bros. from 1927 to 1948. After this Ariel agent was Brylaw motors.

This unrestored Mk.1 model was built in about 1950 and features a 65 mm (bore) x 75 mm (stroke) air-cooled four -cylinder engine with push-rod actuated overhead valves producing 34.5 b.h.p (25.7 kW). The Museum purchased this example 1983 in unrestored condition.
Discipline: Technology
Dimensions: 1006 mm (Height), 710 mm (Width), 2185 mm (Length)
Weight: 197 kg (Weight)

More information

Tagged with: motor cycles, batavis, school
Themes this item is part of: Transport Collection, Motor Cycle Collection
Primary Classification: ROAD TRANSPORT
Secondary Classification: Motor Cycles
Tertiary Classification: motor cycles
Inscriptions: Engine No. stamped as 'JJ780'. Gearbox No. stamped as 'G 106F50'.
Manufacturer: Ariel Motors Ltd, Birmingham, England, Great Britain, 1950


Greg Jones Posted on 07 Feb 2010 10:34 AM
Eng an G/Box No are correct for 1950 Frame starts CW. 1950 Models had a chrome tank with red infills ( black was optional ),Single saddle was the correct seat. 1950 was one of the smallest production runs only 980 odd built and most went to USA and OZ
Regards Greg
Discovery Centre Posted on 08 Feb 2010 1:04 PM
Museum Victoria Comment
Hi Greg. Thanks for your feedback! We have passed your comments on to the Curator of Engineering and Transport for his information.

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