Motorcycle construction is the engineering, manufacturing, and assembly of components and systems for a motorcycle which results in the presentation, cost, and aesthetics preferred by the designer. In the early on era of motorcycle times past, many producers of bicycles modified their designs to accommodate the new interior combustion engine. As the engines become more influential and designs outgrew the bicycle origins, the number of motorcycle producers increased. Many of the nineteenth century producers who worked on early motorcycles frequently moved on to other inventions. Daimler and Roper, for example, both went on to develop automobiles..