Milwaukee Road class F7
The F7s are major contenders for the fastest steam locomotives ever built, as they ran at over daily. One run in January 1941 recorded by a reporter for "Trains" magazine saw achieved twice—in the midst of a heavy snowstorm. Baron Gérard Vuillet, a French railroading expert, once recorded a run between Chicago and Milwaukee where the locomotive reached and sustained an average for . However, the British locomotive LNER Class A4 4468 "Mallard" is officially accepted to be the world's fastest, with a run recorded at but authenticated at 126 mph in 1938.
List of preserved steam locomotives in Germany
The low weight of this locomotive, which was based on the DRG Class 01, was achieved by using a light bar frame, smaller boiler and smaller cylinders. From running number 03 123 the pumps were located in the middle of the vehicle and from number 03 163 the locomotives had larger leading wheels. All locomotives had 2 cylinders.
The Class 03.10 was an evolutionary development of the Class 03, comparable to the locomotives of Class 01.10,which were derived from Class 01. Class 03.10 were three-cylinder locomotives equipped with full streamlining on delivering.
Class 05 locomotives were standard express train locomotives of the Deutsche Reichsbahn with full streamlining. Three engines were built, number 05 002 achieved a world speed record for rail vehicles at over 200 km/h.