1931 Ariel Sloper The widened wheel arches and

The widened wheel arches and muscular curves emphasize the car's sporty nature

Harley-Davidson

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To the best of our knowledge

1931 Ariel Sloper The widened wheel arches andAriel's range for 1931 encompassed a dazzling variety of models: vertical engines, sloping engines, sidevalves, overhead valves two or four per cylinder all were represented along with Edward Turner's revolutionary Square Four. Following the then fashionable trend, the SF31 was one of three half litre 'Sloper' models that joined the range in the spring of 1931. Like that of its fellows, the newcomer's overhead valve engine was inclined at 30 degrees