1951 Ariel Square Four
Lot 348
Only 32 miles since full restoration 1951 Ariel 998cc Square Four 4G Mk1 Frame no. SC808 Engine no. CJ328
Sold for £10,350 (US$ 16,217) inc. premium

Lot Details
1951 Ariel Square Four 1951 Ariel Square Four 1951 Ariel Square Four 1951 Ariel Square Four 1951 Ariel Square Four 1951 Ariel Square Four 1951 Ariel Square Four
Only 32 miles since full restoration 1951 Ariel 998cc Square Four 4G Mk1
Registration no. LOH 184
Frame no. SC808
Engine no. CJ328
Designed by Edward Turner, creator of the legendary Triumph Speed Twin, the first Ariel Square Four was shown at the Olympia Motorcycle Show in 1930. Conceived as an overhead-camshaft 500, the model grew to 601cc before a total redesign saw it emerge as the Model 4G, with 995cc overhead-valve engine, in 1937. Anstey-link plunger rear suspension became an option in 1939, but would not be offered again until 1946, when a telescopic front fork replaced the previous girder type. An exercise in weight shedding saw the cast-iron cylinder head and barrel replaced by alloy components for 1949, the revised model, now capable of 90mph-plus, being known as the Mark 1. Introduced in 1953, the 'four pipe' Mk2 with redesigned cylinder head elevated the Square Four into the league of genuine 100mph motorcycles. Square Four production ceased in 1959, along with that of all other Ariel four-strokes. To date, the innovative Ariel Square Four remains unique in motorcycling history; a true 'gentleman's motorcycle', this refined yet characterful machine retains an enthusiastic and loyal following, and is highly prized by discerning enthusiasts.

A 1951 model fitted with a 1948 engine, this Square Four was acquired in July 1988 from Robert McIntyre's Sorn Castle Collection where it had been since at least 1979. Since acquisition the Ariel has been the subject of a long-term full restoration undertaken mainly by the highly respected classic vehicle restorers, Archer's of Dunmow, which was completed in 2010 at a total cost of more than £20,800 (see detailed invoices on file). Only 32 miles have been covered since the rebuild's completion, though the machine has been started regularly and is said to be running well. The machine is offered with the aforementioned restoration invoices, spare parts catalogues, copy of old registration document, SORN acknowledgement letter, expired MoT (November 2010) and Swansea V5C registration document.
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