Operational Details
The 9F turned out to be the best of the Standard classes, and one of the finest steam locomotive designs ever designed in Britain in terms of its capacity to haul heavy loads over long distances. It was highly effective at its designed purpose, hauling heavy, fast freight trains, and was used all over the British railway network. This was exemplified when in September 1982, preserved engine 92203 Black Prince set the record for the heaviest train ever hauled by a steam locomotive in Britain, when it started a 2,178-ton train at a Foster Yeoman quarry in Somerset, UK.
The 9F also proved its worth as a passenger locomotive, adept at fast running despite its small driving wheels, and for a time was a frequent sight on the Somerset and Dorset Railway, where its power and high proportion of adhesive weight were well suited to coping with the 1 in 50 ruling gradient on the Bath extension. On one occasion, a 9F was set to haul an express passenger train, in place of the normal LNER "Pacific", from Grantham to King's Cross. An enthusiast aboard the train timed the run and noted that twice the speed exceeded 90 mph. The driver was afterwards told that he was only supposed to keep time, "not break the bloody sound barrier!" He replied that the engine had no speedometer, and that it ran so smoothly at high speeds that he just let it run as fast as felt safe. Nor was this the only instance of 9Fs reaching high speeds. However, concerns that the high rotational speeds involved in fast running could cause excessive wear and tear to the plain-bearing running gear prompted the British Railways management to stop the utilisation of 9Fs on express passenger trains
Read more about this topic: BR Standard Class 9F
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