The Metropolitan-Vickers Type 2 Co-Bo Diesel-Electric Locomotives : Pen & Sword Transport : 9781526742810 : 1526742810 : 03 Aug 2020 : This book provides an in-depth history of the Metropolitan-Vickers diesel-electric Type 2 locomotives, more frequently known collectively as the ?Co-Bo's? due to their unusual wheel arrangement.This book provides an in-depth history of the Metropolitan-Vickers diesel-electric Type 2 locomotives, more frequently known collectively as the ?Co-Bo's? due to their unusual wheel arrangement. Twenty locomotives were constructed during the late-1950s for use on the London Midland Region of British Railways.The fleet was fraught with difficulties from the start, most notably due to problems with their Crossley engines, this necessitating the need for extensive rehabilitation work during the early-1960s. Matters barely improved and the option to completely re-engine the locomotives with English Electric units was debated at length, but a downturn in traffic level