Download or read book The Rupert Ratio Unit Single Engine Manual for BSA C15 B25 B40 B44 B50 written by Rupert Ratio and published by Panther Publishing Limited. This book was released on 2000 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Takes the BSA (and Triumph) Unit Single engine apart, and then shows how to rebuild the engine. This book includes wiring diagrams, complete specifications, hundreds of illustrations, and, advice and tuning tips. It is of interest to BSA enthusiasts since it charts the development of one of the most successful machines to come out of Small Heath.