The Great Central Railway (GCR) Class 9F was a class of 0-6-2T The Great Central Railway (GCR) was a railway company in England which came into being when the Manchester, Sheffield and Lincolnshire Railway changed its name in 1897 on the completion of its London Extension. ... In Whyte notation, a 0-6-2 is a railroad steam locomotive that has six coupled driving wheels followed by two trailing wheels, with no leading wheels . ...
It was the first British design to use the Belpaire firebox. A PRR N1s. ...
Parker introduced the 0-6-2T arrangement to the Manchester Sheffield and Lincolnshire Railway (MSandLR, later GCR) in 1889 as the N4.
This length trial period appears to have proved useful because a weakness in the valve gear layout was identified.
In common with most of the GCR locomotives, the original chimneys were replaced with shorter chimneys and domes to fit within the LNER Composite Loading Gauge.
A similar class, but with the 2-10-0 wheel formation, was also produced for use on lightly laid track which could not support the weight of the 2-8-0s.
The class9F was turned out with a similar, but not identical, boiler to the Britannia Pacifics, and with 5 foot diameter driving wheels (a little larger than the conventional heavy freight loco) proved that they had a good turn of speed as well as the high tractive effort needed for heavy load haulage.
It is, therefore, quite appropriate that a member of the class should be restored at Loughborough even though this particular locomotive was always stationed on the Western Region.
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