Fastest steam locomotive
On 3 July 1938, Mallard claimed the world speed record for steam locomotives at 126 mph (203 km/h) during a trial run of a new, quick-acting brake, known as the Westinghouse QSA brake. The speed was achieved during the downward grade of Stoke Bank, south of Grantham at milepost 90¼, between Little Bytham and Essendine stations. That record still stands.
