Ca 1952 Ariel 995cc Square Four Frame no SV1205 Engine no DK883.
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. With its limitless reserves of
pulling power and innate smoothness, the model was a superb touring mount
and a long-time favourite of the sidecar brigade.
Square Four production, along with that of all other Ariel four-strokes,
ceased in 1959. 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.
This well running Ariel Square Four is an older restoration.