124 pages, 78 black & white illustrations, size 5.5 x 8.5 inches. Originally published under the title The Second Book of the BSA Twins by A.G. Lupton, this book is one of The Motorcyclist's Library series published in the USA by Floyd Clymer by arrangement with the original publishers Pitman Ltd. of London, England. It includes complete technical data, service and maintenance information and detailed instructions for the repair and overhaul of the major mechanical and electrical components for A50 & A65 BSA twin cylinder models from 1962 through 1969. There is adequate detailed text and diagrams to assist in major refurbishing such as an engine rebuild or even a complete renovation. Applicable to all 500cc & 650cc BSA unit construction A50 & A65 twins including the Royal Star, Thunderbolt, Wasp, Cyclone, Hornet, Lightning & Spitfire. This publication has been out-of-print and unavailable for many years and is becoming increasingly more difficult to find on the secondary market and we are pleased to be able to offer this reproduction as a service to all BSA enthusiasts worldwide.

Originally published under the title The Book of the BSA Twins by W. C. Haycraft this book is one of The Motorcyclist's Library series published in the USA by Floyd Clymer by arrangement with the original publishers Pitman Ltd. of London, England. It includes complete technical data, service and maintenance information and detailed instructions for the repair and overhaul of the major mechanical and electrical components for all models of BSA pre-unit twin cylinder motorcycles from 1948 through 1962. There is adequate detailed text and diagrams to assist in major refurbishing such as an engine rebuild or even a complete renovation. This is a - must have - reference for any BSA enthusiast and would certainly assist in helping any potential purchaser better understand the inner workings prior purchasing of one of these classic motorcycles. Applicable to all 500cc and 650cc variations of the A7 and A10 pre-unit OHV twins this publication has been out-of-print and unavailable for many years and is becoming increasingly more difficult to find on the secondary market and we are pleased to be able to offer this reproduction as a service to all BSA enthusiasts worldwide.

The BSA 500 and 650cc Unit Twins were the top-of-the-range models for BSA from the early 1960s through to the Rocket 3 of 1969. The model range covered every angle, from staid tourer, through off-road racers through to true-road burners. This book has two parts - the first describes the design and development of the range from its inception in 1962 to the final demise of BSA in 1973, detailing the various models produced each year. The second part of the book looks at the practicalities of restoring and running the model, through documenting both owners' experiences and a full restoration of a typical bike. The illustrated record of the restoration of a 1965 Lightning identifies the pitfalls that will confront the restorer and the practical modifications that can be made to provide a reliable mount for today's traffic conditions.