South African type XS tender

South African type XS tender

Type XS tender on CSAR Superheated Mallet

Type and origin Locomotive CSAR Superheated Mallet Designer American Locomotive Company Builder American Locomotive Company In service 1911

Specifications Configuration 2-axle bogies Gauge 3 ft 6 in (1,067 mm) Cape gauge Length 26 ft 1 1⁄4 in (7,957 mm) Wheel dia. 34 in (864 mm) Wheelbase 17 ft 11 in (5,461 mm)  • Bogie 4 ft 7 in (1,397 mm) Axle load 13 LT 16 cwt (14,020 kg) average  • Bogie 27 LT 12 cwt (28,040 kg) each Weight empty 51,248 lb (23,246 kg) Weight w/o 55 LT 4 cwt (56,090 kg) Fuel type Coal Fuel cap. 10 LT (10.2 t) Water cap. 5,000 imp gal (22,700 l) Stoking Manual Couplers Drawbar & Johnston link-and-pin

Career Operators Central South African Railways South African Railways Numbers SAR 1619-1627

The South African type XS tender was a steam locomotive tender from the pre-Union era in Transvaal.

Type XS tenders entered service in 1911, as tenders to the 2-6-6-2 Superheated Mallet type steam locomotives which were acquired by the Central South African Railways in that year. These locomotives were designated Class MF on the South African Railways in 1912.

Type XS tenders were built in 1911 by the American Locomotive Company (ALCO).

In 1911, the Central South African Railways (CSAR) placed nine 2-6-6-2 Mallet articulated compound steam locomotives in service, built by ALCO. These locomotives were designated Class MF on the South African Railways (SAR) in 1912. The Type XS entered service as tenders to these engines.

The tender had a coal capacity of 10 long tons (10.2 tonnes), a water capacity of 5,000 imperial gallons (22,700 litres) and an average maximum axle load of 13 long tons 16 hundredweight (14,020 kilograms).

In the SAR years, tenders were numbered for the engines they were delivered with. In most cases, an oval number plate, bearing the engine number and often also the tender type, would be attached to the rear end of the tender. During the classification and renumbering of locomotives onto the SAR roster in 1912, no separate classification and renumbering list was published for tenders, which should have been renumbered according to the locomotive renumbering list.

Only the first batch of nine Class MF locomotives of 1911 were delivered new with Type XS tenders. In 1912, they were renumbered in the SAR number range from 1619 to 1627.

Since many tender types are interchangeable between different locomotive classes and types, a tender classification system was adopted by the SAR. The first letter of the tender type indicates the classes of engines to which it could be coupled. The "X_" tenders could be used with the following locomotive classes:

The second letter indicates the tender's water capacity. The "_S" tenders had a capacity of 5,000 imperial gallons (22,700 litres; 6,000 US gallons).