Nigel Gresley
Sir Herbert Nigel Gresley (19 June 1876 – 5 April 1941) was an English railway engineer. He was one of Britain's most famous steam locomotive engineers, who rose to become Chief Mechanical Engineer (CME) of the London and North Eastern Railway (LNER). He was the designer of some of the most famous steam locomotives in Britain, including the LNER Class A1 and LNER Class A4 4-6-2 Pacific engines. An A1 Pacific, "Flying Scotsman", was the first steam locomotive officially recorded over 100 mph in passenger service, and an A4, number 4468 "Mallard", still holds the record for being the fastest steam locomotive in the world (126 mph).
4-6-4
From 1921, 58 C28 class express passenger tank locomotives were built for the "Java Staatsspoorwegen" by three German manufacturers, Henschel & Son, Sächsische Maschinenfabrik and Maschinenfabrik Esslingen. The C28 class was one of the most popular in Indonesia, achieving speeds of up to . It was declared the world's fastest steam locomotive on gauge when it achieved . In addition, being a tank locomotive, it was able to travel at full speed in both directions.