TR DL class

The TR DL class, later known as the EAR 23 class, was a class of 1,000 mm (3 ft 3 ³⁄₈ in) gauge 4-8-0 steam locomotives derived from the Nigerian Railways Emir class. The six members of the DL/23 class were built by Beyer, Peacock & Co. in Gorton, Manchester, England, for the Tanganyika Railway (TR). They entered service on the TR in 1923, and were later operated by the TR's successor, the East African Railways (EAR).[2]

Tanganyika Railway DL class East African Railways 23 class
TR 301 at Nairobi Railway Museum, 2010
Type and origin Power type Steam Builder Beyer, Peacock & Co. Serial number 6128–6133 Build date 1923 Total produced 6
Specifications Configuration: ​  • Whyte 4-8-0  • UIC 2′D1' h2 Gauge 1,000 mm (3 ft 3 3⁄8 in) Driver dia. 43 in (1,092 mm) Adhesive weight 37.7 long tons (38.3 t) Loco weight 49.8 long tons (50.6 t) Fuel type Oil Fuel capacity 2,019 imp gal (9,180 l; 2,425 US gal) Water cap 2,500 imp gal (11,000 l; 3,000 US gal) Firebox:  • Firegrate area 18.3 sq ft (1.70 m2) Boiler pressure 160 psi (1.10 MPa) (165 psi (1.14 MPa)) Heating surface 1,323 sq ft (122.9 m2)  • Tubes   945 sq ft (87.8 m2)  • Firebox 129 sq ft (12.0 m2) Superheater: ​  • Heating area 249 sq ft (23.1 m2) Cylinders 2 Cylinder size 18 in × 23 in (457 mm × 584 mm)
Performance figures Tractive effort 24,300 lbf (108.09 kN)
Career Operators Tanganyika Railway (TR) → East African Railways (EAR) Class TR: DL class EAR: 23 class Number in class 6 Numbers TR: 200–205/300–305 EAR: 2301–2306 Delivered 1923
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