A fresh, much needed appraisal of BSA and Triumph motorcycles designed for the 1971 model year, plus BSA's revolutionary Ariel 3 moped, and the 750cc Triumph Hurricane that was originally planned as a BSA model. This book also presents a comprehensive study of the related promotional and racing events, as well as the US organisation, and an in-depth account of BSA's financial position before and after mid-1971's devastating trading loss announcement.