The KUR EC3 class, later known as the EAR 57 class, was a class of 1,000mm (3ft3+3⁄8in) gauge 4-8-4+4-8-4 Garratt-type articulated steam locomotives. The twelve members of the class were built by Beyer, Peacock & Co. in Manchester, England, for the Kenya-Uganda Railway (KUR). They entered service between 1939 and 1941, and were later operated by the KUR's successor, the East African Railways (EAR).[1]
Kenya-Uganda Railway EC3 class
East African Railways 57 class
No. 5712 Kigezi with a freight train at Mombasa, Kenya, in 1969
Type and origin
Power type
Steam
Designer
Beyer, Peacock & Co.
K.C. Strahan
H.B. Stoyle
Builder
Beyer, Peacock & Co.
Serial number
6905–6910, 6970–6975
Build date
1939, 1940
Total produced
12
Specifications
Configuration:
•Whyte
4-8-4+4-8-4 (Garratt)
•UIC
(2′D2′)(2′D2′) h4
Gauge
1,000mm (3ft3+3⁄8in)
Driver dia.
54in (1,372mm)
Width
114in (2,900mm)
Height
149.5in (3,800mm)
Adhesive weight
97 long tons (99t)
Loco weight
186.2 long tons (189.2t)
Fuel type
Coal
Fuel capacity
12 long tons (12t)
Water cap.
6,000impgal (27,000l; 7,200USgal)
Firebox: •Firegrate area
48.5sqft (4.51m2)
Boiler pressure
220psi (1.52MPa)
(225psi (1.55MPa))
Heating surface
2,561sqft (237.9m2)
•Tubes
1,963sqft (182.4m2)
•Firebox
169sqft (15.7m2)
Superheater:
•Type
Inside
•Heating area
429sqft (39.9m2)
Cylinders
4 (Garratt)
Cylinder size
16in ×26in (406mm ×660mm)
Valve gear
Walschaerts
Valve type
Trunk type
Valve travel
5in (130mm)
Loco brake
Westinghouse type
Train brakes
Westinghouse type
Safety systems
3 Ross muffled pop valves
Performance figures
Tractive effort
47,200lbf (209.96kN)
Career
Operators
Kenya-Uganda Railway (KUR)
→ East African Railways (EAR)
Class
KUR: EC3 class
EAR: 57 class
Number in class
12
Numbers
KUR: 77–88
EAR: 5701–5712
First run
1939
Withdrawn
1967
Preserved
KUR 87 (EAR 5711)
Disposition
11 scrapped, one preserved
Class list
The numbers, build dates and names of each member of the class were as follows:[2]
Durrant, A E (1981). Garratt Locomotives of the World (rev. and enl.ed.). Newton Abbot, Devon, UK; North Pomfret, Vt, USA: David & Charles. ISBN0-7153-7641-1. OCLC9326294.
Durrant, A E; Lewis, C P; Jorgensen, A A (1981). Steam in Africa. London: Hamlyn. ISBN978-0-600-34946-4. OCLC9014344. OL15088099M. WikidataQ111363476.
Patience, Kevin (1976), Steam in East Africa: a pictorial history of the railways in East Africa, 1893-1976, Nairobi: Heinemann Educational Books (E.A.) Ltd, OCLC3781370, WikidataQ111363477
Ramaer, Roel (1974). Steam Locomotives of the East African Railways. David & Charles Locomotive Studies. Newton Abbot, North Pomfret: David & Charles. ISBN978-0-7153-6437-6. OCLC832692810. OL5110018M. WikidataQ111363478.
Ramaer, Roel (2009). Gari la Moshi: Steam Locomotives of the East African Railways. Malmö: Stenvalls. ISBN978-91-7266-172-1. OCLC502034710. WikidataQ111363479.
Staff writer (February 1955). ""57" Class Locomotives"(PDF). East African Railways and Harbours Magazine. East African Railways and Harbours. 2 (1): 22. Retrieved 8 December 2014.
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