NEW!

Aug 2000

THE RUPERT RATIO

UNIT SINGLE ENGINE MANUAL
FOR C15 B40 B25 B44 B50

Armed with this book even the least experienced `spanner man' will be able to not only rebuild a BSA Unit Single, but make it go better and more reliably than even BSA thought possible! This book quite literally takes the BSA (and Triumph) Unit Single engine apart., then it shows how to rebuild the engine correctly. The book includes wiring diagrams, complete specifications, hundreds of illustrations, a wealth of invaluable advice and tuning tips to make your unit single perform! The Rupert Ratio Unit Single Engine Manual will also be of interest to all BSA enthusiasts since it charts the development of one of the last and most successful machines to come out of Small Heath. Long after the factory closed Unit Singles were still a competitive force in trials and motocross riding and many are still used for that purpose today.

Contents

Introduction
The Unit Single Saga
Unit single quick stripdown guide
Preparation of aluminium castings
Lubrication system
Main bearings
Crankshaft and conrod assembly
Timing side
Gearbox
Kick start mechanism and outer timing cover
Primary drive
Cylinder and piston
Pushrods
Cylinder head
Rockerbox
Engine breathing
Electrical system
Carburation
Life with a B40
Specifications
Exploded engine drawings
Appendix: Rupert Ratio engine stand
Index


Rupert Ratio is a long time contributor to the journal of the BSA Owners Club, The Star, on technical matters relating to BSA Motorcycles. He is also a one of the many `Agony Uncles' for members of the club, i.e. a technical consultant who can offer advice and assistance to club members when their beloved Beesas are beset by mechanical afflictions. He carries out the latter role under his real name, Dave Smith who is a design technology teacher by profession..

August 2000, 264 pages, 300 illustrations, 171x248mm, paperback, ISBN 09535098 1 8 Buy the book through the BSAOC in the UK or thorough your local BSA club or by Lavis Marketing.

£14.95 plus p&p £3 UK and Europe, £6 elsewhere surface mail
'Cheques in Pounds sterling drawn on a UK bank payable to Lavis Marketing. Credit cards accepted.'
Eurocard Mastercard Visa Amex Switch