Wikipedia

KUR EC class

The KUR EC class was a class of 1,000 mm (3 ft 3+3⁄8 in) gauge 4-8-2+2-8-4 Garratt-type articulated steam locomotives built by Beyer, Peacock & Co. in Manchester, England, for the Kenya-Uganda Railway (KUR).[2]

Kenya-Uganda Railway EC class
Works photo of KUR EC no. 41
Works photo of KUR EC no. 41
Type and origin
Power typeSteam
BuilderBeyer, Peacock & Co.
Serial number6300–6303
Build date1926
Total produced4
Specifications
Configuration:
​
 • Whyte4-8-2+2-8-4 (Garratt)
 • UIC(2′D1′)(1′D2′) h4
Gauge1,000 mm (3 ft 3+3⁄8 in)
Driver dia.43 in (1,092 mm)
Adhesive weight79.4 long tons (80.7 t)
Loco weight125.4 long tons (127.4 t)
Fuel type
  • Eucalyptus wood
  • → Coal
Fuel capacity6 long tons (6.1 t)
Water cap.4,250 imp gal (19,300 L; 5,100 US gal)
Firebox:​
 • Grate area43.6 sq ft (4.05 m2)
Boiler pressure170 psi (1.17 MPa)
Heating surface:​
 • Firebox174 sq ft (16.2 m2)
 • Tubes 
1,863 sq ft (173.1 m2)
 • Total surface2,417 sq ft (224.5 m2)
Superheater:
​
 • TypeInside
 • Heating area380 sq ft (35 m2)
Cylinders4 (Garratt)
Cylinder size16.5 in × 22 in (419 mm × 559 mm)
Valve gearWalschaerts
Loco brakeWestinghouse type
Train brakesWestinghouse type
Performance figures
Tractive effort40,252 lbf (179.05 kN)
Career
Operators
ClassKUR: EC class
Number in class4
Numbers
  • KUR: 41–44
  • Indo-China: 201–204
First run1926
Withdrawn
  • KUR: August 1939
  • Indo-China: not known
DispositionNot known
[1]

Background

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In 1901, the rails laid for the KUR's predecessor, the Uganda Railway (UR), reached their final destination at Lake Victoria, and in 1903 construction of the associated buildings, tunnels bridges and viaducts was completed.[3] By 1910, the UR had a critical requirement for further motive power, and that year, the UR's management ordered sixteen 0-6-6-0 Mallet-type articulated locomotives from the North British Locomotive Company.[4]

After the Mallet locomotives entered service as the UR M class, they developed a poor reputation, due to mechanical problems and an excessive need for maintenance.[4]

When a decision was made to order further new locomotives in 1926, the year the UR was renamed as the KUR, the railway committee therefore opted for Garratt-type engines instead. These were the first Garratts to be ordered and acquired by the railway, and were designated as the EC class.[2][5]

Design

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The new Garratt locomotives were, in essence, two 4-8-2 Mountain-type engines facing back to back and powered by single boiler. By comparison with conventional rigid-chassis locomotives, they had an increased tractive effort combined with a light axle loading.[6]

Service history

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The four members of the EC class entered service in 1926.[7][8] A significant initial difficulty with them was that they were fired by Eucalyptus wood. When logs of Eucalyptus were thrown into a blazing EC class firebox, they virtually exploded. Firing a wood-burning EC class engine was therefore very inefficient, especially when it was working a heavy gradient. The KUR solved this problem by converting the EC class to burn coal instead of wood.[8]

In other respects, the EC class's innovative configuration proved to be extremely successful.[7][8] In 1928, the KUR therefore ordered 20 more Garratt locomotives, which became the KUR EC1 class.[8]

After a relatively short career with the KUR, the EC class locomotives were sold, and exported to Indo-China in August 1939.[7]

See also

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References

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Notes

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  1. ^ Ramaer 1974, pp. 45–46, 86.
  2. ^ a b Ramaer 1974, p. 45.
  3. ^ Patience 1996, p. 19.
  4. ^ a b Patience 1996, p. 24.
  5. ^ Patience 1996, p. 27.
  6. ^ Patience 1996, pp. 27–28.
  7. ^ a b c Durrant 1981, p. 177.
  8. ^ a b c d Patience 1996, p. 28.

Bibliography

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  • Durrant, A E (1981). Garratt Locomotives of the World (rev. and enl. ed.). Newton Abbot, England: David & Charles. ISBN 0-7153-7641-1. OCLC 9326294.
  • 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, OCLC 3781370, Wikidata Q111363477
  • Patience, Kevin (1996). Steam Twilight: The last years of steam on Kenya Railways. Bahrain: Kevin Patience. OCLC 37615720.
  • Ramaer, Roel (1974). Steam Locomotives of the East African Railways. David & Charles Locomotive Studies. Newton Abbot, North Pomfret: David & Charles. ISBN 978-0-7153-6437-6. OCLC 832692810. OL 5110018M. Wikidata Q111363478.
  • Ramaer, Roel (2009). Gari la Moshi: Steam Locomotives of the East African Railways. Malmö: Stenvalls. ISBN 978-91-7266-172-1. OCLC 502034710. Wikidata Q111363479.
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