Velocette - The Three Twins: Roarer, Model O and Le

An in-depth engineering analysis of the twin-cylinder motorcycles produced by Veloce Ltd: the Roarer, the Model O and the LE. The book looks at the design features that are common to all three twins, as well as the design influences of the LE. Although development of the LE was flawed, the honesty and ingenuity of the design is duly recognised.