The NBR K Class is a class of 4-4-0 steam locomotive of the North British Railway. The first batch (later LNER Class D26) was designed by Matthew Holmes in 1902 and had 6-foot-6-inch (1.981 m) driving wheels for express passenger work. Three more batches (later LNER Classes D32, D33, and D34) were designed by William P. Reid with 6-foot-0-inch (1.829 m) driving wheels for mixed traffic work. This included perishable goods, such as fish from Mallaig and Aberdeen. They had inside cylinders and Stephenson valve gear. The D34 locomotives, commonly known as Glen Class, were built with superheaters. The LNER later fitted superheaters to all D26, D32, and D33 engines as well. All engines of the K class are sometimes known as Glen Class, although the designation is strictly reserved to the fourth (D34) batch.
Quick Facts NBR K Class LNER Class D26 / D32 / D33 / D34, Type and origin ...
NBR K Class LNER Class D26 / D32 / D33 / D34 |
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62477 Glen Dochart on Eastfield Locomotive Depot, Glasgow, September 1957 |
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Specifications |
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Configuration:
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• Whyte | 4-4-0 |
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Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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Leading dia. | 3 ft 6 in (1.067 m) |
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Driver dia. | D26, 6 ft 6 in (1.981 m) D32/D33/D34, 6 ft 0 in (1.829 m) |
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Length | D34, 17.068 m (56.00 ft) D26,17.145 m (56.25 ft) |
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Loco weight | D26, 52 long tons (53 t; 58 short tons) D32/1, 53 long tons (54 t; 59 short tons) D32/2, 53.7 long tons (54.6 t) D33, 54.05 long tons (54.92 t; 60.54 short tons) D34, 57.2 long tons (58.1 t; 64.1 short tons) |
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Tender weight | D26/D32, 40 long tons (41 t; 45 short tons) D33, 44.6 long tons (45.3 t) D34, 46.65 long tons (47.40 t) |
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Fuel type | Coal |
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Boiler pressure | D26/D32/1/D33, 190 psi (1.3 MPa) D32/2/D34, 180 psi (1.2 MPa) |
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Cylinders | Two inside |
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Cylinder size | D26/D32/D33, 19 in × 26 in (483 mm × 660 mm) D34, 20 in × 26 in (508 mm × 660 mm) |
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Performance figures |
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Tractive effort | D26, 19,434 lbf (86.45 kN) D32/1/D33, 21,053 lbf (93.65 kN) D32/2, 19,945 lbf (88.72 kN) D34, 22,100 lbf (98 kN) |
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Career |
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Operators | NBR » LNER » BR |
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Power class | BR: 3P (except D26) |
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Nicknames | Glen class (D34 only), Intermediates (D32 and D33 only) |
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Disposition | One preserved, remainder scrapped |
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