Sudan Railways 250 class

Sudan Railways 250
Rhodesia Railways 17th class

Type and origin
Power type	Steam
Builder	Beyer, Peacock and Company
Order number	1186, 1193
Serial number	6798–6801, 6870–6875
Build date	1936–1937
Total produced	10

Specifications
Configuration	4-6-4+4-6-4
UIC class	2′C2′+2′C2′ h4
Gauge	3 ft 6 in (1,067 mm) Cape gauge
Driver dia.	57 in (1,448 mm)
Length	89 ft 11 in (27.41 m)
Axle load	12 long tons 10 cwt (28,000 lb or 12.7 t)
Adhesive weight	75 long tons 12 cwt (169,300 lb or 76.8 t)
Loco weight	168 long tons 16 cwt (378,100 lb or 171.5 t)
Firebox: • Firegrate area	43 sq ft (4 m²)
Boiler pressure	200 psi (1.38 MPa)
Heating surface: • Tubes and flues	1,776 sq ft (165 m²)
• Firebox	190 sq ft (17.7 m²)
Superheater:
• Heating area	440.2 sq ft (40.9 m²)
Cylinders	Four
Cylinder size	16.75 in × 26 in (425 mm × 660 mm)
Train brakes	Vacuum

Performance figures
Tractive effort	43,510 lbf (193.5 kN)

Career
Operators	Sudan Railways Rhodesia Railways Caminhos de Ferro de Moçambique
Class	SR: 250 RR: 17th CFM:
Numbers	SR: 250–259 RR: 271–280 CFM: 921–930
Disposition	Unknown, probably all scrapped

The Sudan Railways 250 class was a class of ten 4-6-4+4-6-4 Garratt locomotives. It was one of only two classes of "Double Baltic" Garratts. – the other class being the Rhodesia Railways 15th class.

The ten locomotives were built in two batches by Beyer, Peacock and Company in 1936–1937. They were the only class of Garratts on the Sudan Railways and were numbered 250–259. They were used on Port Sudan to Atbara and Atbara to Wad Madani routes, until they were made redundant by diesel locomotives.

In 1949, they were sold to the Rhodesia Railways where they were numbered 271 to 280 and classified as 17th class. On the RR they were used alongside the 15th and 15A classes.

In 1964 all ten locomotive were sold to the Caminhos de Ferro de Moçambique who numbered them 921 to 930. They were then used on the Beira railway from the port city of Beira to the Rhodesian (now Zimbabwean) border at Umtali (now Mutare).

They were still in use into the 1980s, but post-civil war, their fate is unclear; they are presumed all scrapped.

References

Durrant, A. E. Garratt-Lokomotiven der Welt. Birkhäuser Verlag. ISBN 3-7643-1481-8.

Locomotives of Rhodesia and Zimbabwe

Steam	6th 6A 7th 8th 9th 9A 9B 10th 11th 11A 12th 12A 13th 14th 14A 15th 15A 16th 16A 17th 18th 19th 20th 20A

Diesel	DE1 DE2 DE3 DE4 DE5 DE6 DE7 DE8 DE8A DE8B DE9 DE9A DH1 DE10 DE10A DE10B

Electric	EL1

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