NER B1 Class
LNER Class N8 |
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LNER N8 class No. 9375 at Hull Dairycotes Locomotive Depot 21 September 1947. |
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| Specifications |
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Configuration:
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| • Whyte | 0-6-2 |
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| Gauge | 4 ft 8+1⁄2 in (1,435 mm) |
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| Driver dia. | 5 ft 1.25 in (1.556 m) |
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| Loco weight | originally 56 LT 5 cwt (57.2 t) |
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| Fuel type | Coal |
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| Boiler pressure | 160 lbf/in2 (1.10 MPa) |
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| Cylinders | Two, inside |
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| Cylinder size | originally 18 in × 24 in (457 mm × 610 mm) |
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| Valve gear | originally Joy |
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| Career |
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| Withdrawn | 1929-1956 |
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| Disposition | All scrapped |
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The NER B and B1 Classes (later London and North Eastern Railway [LNER] Classes N8) were two classes of 0-6-2 tank locomotives designed by Thomas William Worsdell for heavy freight and mineral on the North Eastern Railway, introduced in 1886. They were tank engine versions of the NER C1 Class 0-6-0, using both simple expansion (Class B1) and also the von Borries configuration for two-cylinder compound locomotives (Class B). Both types were later rebuilt using superheated steam and the compounds were also rebuilt as simple expansion locomotives, and eventually formed a single class (albeit with variations in dimensions). Many of the superheated locomotives were also later returned to saturated steam as their original boilers wore out. As a result the classes have had a very complex mechanical history.
