为什么V型双缸发动机在美式摩托车中居多呢?最主要的原因是受曾一度领导潮流的哈利·戴维森公司的影响,骑士对双气缸V型排列非常热衷。普通的美式车,如果单凭具备现代化摩托车工业技术,即使是很实用的二冲程美式车,也不好销,而装备了V型双缸发动机的美式车则明显不同。雅马哈XV250 virago(天王车,见图1)的走俏进一步证明了这一点。 Why V-twin engines are mostly American-style motorcycles? The main reason is the Cavaliers’ enthusiasm for a two-cylinder V-shape, influenced by the once-leading Harry Davidson. An ordinary American car, even if it is a very practical two-stroke American car with a modern motorcycle industry technology, is not good at selling, while the American car equipped with a V-twin engine is significantly different. The popularity of the Yamaha XV250 virago (King’s car, see Figure 1) further testifies to this.