{"product_id":"books-type-4-locomotives-of-british-rail-by-andrew-walker","title":"Type 4 Locomotives of British Rail","description":"The six principal classes of diesel locomotive that once made up the 'Type 4' classification - the 40, 44, 45, 46, 47 and 50 - were the survivors of a wider group that can trace its origins to the British Transport Commission's Modernisation Plan of 1955. Designating a power output of between 2,000 and 3,000 hp, the type once contained representatives of several non-standard and one-off prototype builds, including the Warship and Western diesel-hydraulics, which between them originally numbered over 100 examples. The scrapping, exporting or accidental writing off of the numerous Type 4 prototypes in the 1960s and early 1970s - with the exception of the ten Class 44 Peaks - left a cohort of over 900 diesel-electrics that became the real backbone of the BR fleet, including the most numerous single mainline class ever built in Britain, the 'Brush 4' - or Class 47, as it later became.This pictorial collection presents a wide-ranging selection of images of Type 4 locomotives from the late 1970s to the present day, photographed and compiled by Andrew Walker and John Walker with contributions from fellow photographer Vaughan Hellam.","brand":"World of Books ","offers":[{"title":"Default Title","offer_id":53507272737041,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9781445680095.jpg?v=1778123059","url":"https:\/\/www.worldofbooks.com\/products\/books-type-4-locomotives-of-british-rail-by-andrew-walker","provider":"World of Books ","version":"1.0","type":"link"}