The Triumph Speed Twin & Thunderbird Bible: All 5t 498cc & 6t 649cc Models 1938 to 1966

New in paperback! The Triumph Speed Twin & Thunderbird Bible show the definitive history of Triumph’s hugely popular Speed Twin and Thunderbird models. Much more than a simple history, this book is the ultimate single source of detailed information on these two classic Triumph twins, ideal for owners and would-be owners alike.This ’Bible’ contains a wealth of information, and covers the models’ year-on-year development history from 1938-1966, engine and frame numbers, model type identification guide, colour schemes, complete technical specifications of every model, and details of international sporting achievements attained on these classic machines. In addition, factory photographs show each model in authentic, original detail.

After National Service in the Royal Air Force Harry Woolridge applied for a job in the Service Department at the Triumph Engineering Company, and was lucky enough to be selected. Thus began a working relationship with Triumph and its motorcycles that would last thirty years: an experience Harry says he would not have missed at any price. After a few years in the Service Department, Harry joined the team in the Experimental department until he was promoted to the position of Assistant Quality Control Manager. Later, in a reshuffle of titles, he became Inspection Foreman for Motorcycle Assembly and Production Development. With the formation of the Meriden Co-operative, Harry served as Warranty/Service Manager until the factory closed in 1983.