South African Class 14C 4-8-2

South African Class 14C, 14CM, 14CR & 14CRM 4-8-2, 4th batch
Class 14CM, fourth batch, possibly no. 2028, c. 1945
Type and origin ♠ Class 14C, standard, as built with a Belpaire firebox ♥ Class 14CM, rebalanced for mainline working ♣ Class 14CR, standard, Watson Standard boiler ♦ Class 14CRM, mainline, Watson Standard boiler ʘ 22 in (559 mm) bore - ʘ 21 3⁄4 in (552 mm) bore Power type Steam Designer Montreal Locomotive Works Builder Montreal Locomotive Works Serial number 63075-63087 Model Class 14C Build date 1922 Total produced 13
Specifications Configuration: ​  • Whyte 4-8-2 (Mountain)  • UIC 2′D1’h2 Driver 2nd coupled axle Gauge 3 ft 6 in (1,067 mm) Cape gauge Leading dia. 28 1⁄2 in (724 mm) Coupled dia. 48 in (1,219 mm) Trailing dia. 33 in (838 mm) Tender wheels 34 in (864 mm) Wheelbase 59 ft 1⁄4 in (17,990 mm)  • Engine 30 ft 8 in (9,347 mm)  • Leading 6 ft 2 in (1,880 mm)  • Coupled 12 ft 9 in (3,886 mm)  • Tender 17 ft 11 in (5,461 mm)  • Tender bogie 4 ft 7 in (1,397 mm) Length: ​  • Over couplers 66 ft 10 1⁄8 in (20,374 mm) Height ♠♥ 12 ft 9 3⁄8 in (3,896 mm) ♣♦ 13 ft 3⁄4 in (3,981 mm) Frame type Bar Axle load ♠♥ 16 LT 16 cwt (17,070 kg) ♣♦ 16 LT 15 cwt (17,020 kg)  • Leading ♠♥ 15 LT 16 cwt (16,050 kg) ♣♦ 16 LT 2 cwt (16,360 kg)  • 1st coupled ♠♥ 15 LT 8 cwt (15,650 kg) ♣♦ 16 LT 8 cwt (16,660 kg)  • 2nd coupled ♠♥ 16 LT (16,260 kg) ♣♦ 15 LT 15 cwt (16,000 kg)  • 3rd coupled ♠♥ 16 LT 16 cwt (17,070 kg) ♣♦ 16 LT 10 cwt (16,760 kg)  • 4th coupled ♠♥ 16 LT 16 cwt (17,070 kg) ♣♦ 16 LT 15 cwt (17,020 kg)  • Trailing ♠♥ 10 LT 8 cwt (10,570 kg) ♣♦ 9 LT 1 cwt (9,195 kg)  • Tender axle 12 LT 14 cwt 2 qtr (12,930 kg) av. Adhesive weight ♠♥ 65 LT (66,040 kg) ♣♦ 65 LT 8 cwt (66,450 kg) Loco weight ♠♥ 91 LT 4 cwt (92,660 kg) ♣♦ 90 LT 11 cwt (92,000 kg) Tender weight 50 LT 18 cwt (51,720 kg) Total weight ♠♥ 142 LT 2 cwt (144,400 kg) ♣♦ 141 LT 9 cwt (143,700 kg) Tender type LP (2-axle bogies) Fuel type Coal Fuel capacity 10 LT (10.2 t) Water cap 4,250 imp gal (19,300 l) Firebox type ♠♥ Belpaire - ♣♦ Round-top  • Firegrate area ♠♥♣♦ 37 sq ft (3.437 m2) Boiler: ​  • Model ♣♦ Watson Standard no. 2  • Pitch ♠♥ 7 ft 7 in (2,311 mm) ♣♦ 8 ft 1 1⁄2 in (2,476 mm)  • Diameter ♠♥♣♦ 5 ft 7 1⁄2 in (1,714 mm)  • Tube plates ♠♥ 19 ft 3⁄8 in (5,801 mm) ♣♦ 19 ft 4 in (5,893 mm) steel ♣♦ 19 ft 3 5⁄8 in (5,883 mm) copper  • Small tubes ♠♥ 139: 2 1⁄4 in (57 mm) ♣♦ 87: 2 1⁄2 in (64 mm)  • Large tubes ♠♥ 24: 5 1⁄2 in (140 mm) ♣♦ 30: 5 1⁄2 in (140 mm) Boiler pressure ♠♥♣♦ʘ 190 psi (1,310 kPa) ♠♣ʘ 195 psi (1,344 kPa) ♦ʘ 193 psi (1,331 kPa) Safety valve ♠♥ Ramsbottom- ♣♦ Pop Heating surface ♠♥ 2,350 sq ft (218 m2) ♣♦ 2,075 sq ft (192.8 m2)  • Tubes ♠♥ 2,212 sq ft (205.5 m2) ♣♦ 1,933 sq ft (179.6 m2)  • Firebox ♠♥ 138 sq ft (12.8 m2) ♣♦ 142 sq ft (13.2 m2) Superheater: ​  • Heating area ♠♥ 526 sq ft (48.9 m2) ♣♦ 492 sq ft (45.7 m2) Cylinders Two Cylinder size ♠♥♣♦ 22 in (559 mm) bore ♠♣♦ 21 3⁄4 in (552 mm) bore ♠♥♣♦ 26 in (660 mm) stroke Valve gear Walschaerts Valve type Piston Couplers Johnston link-and-pin AAR knuckle (1930s)
Performance figures Tractive effort ♠♥♣ʘ 37,360 lbf (166 kN) @ 75% ♠♣ʘ 37,480 lbf (166.7 kN) @ 75% ♦ʘ 37,090 lbf (165 kN) @ 75% ♦ʘ 37,950 lbf (168.8 kN) @ 75%
Career Operators South African Railways Class Class 14C, 14CM, 14CR, 14CRM Number in class 13 Numbers 2026-2038 Delivered 1922 First run 1922 Withdrawn 1980s
The leading coupled axle had flangeless wheels

The South African Railways Class 14C 4-8-2 of 1922 was a steam locomotive.

In 1922, the South African Railways placed the fourth and last batch of thirteen Class 14C steam locomotives with a 4-8-2 Mountain type wheel arrangement in service to bring the total in the class to 73. All four batches had different maximum axle loadings. Through reboilerings, rebalancings and cylinder bushings during its service life, this single class eventually ended up as six distinct locomotive classes with two boiler types and a multitude of axle loading and boiler pressure configurations.

In 1922, the last thirteen Class 14C locomotives were ordered from the Montreal Locomotive Works (MLW) in Canada. They were delivered in that same year and numbered in the range from 2026 to 2038. Of the four batches built which all differed in terms of maximum axle loading, weight on driving wheels and engine weight, the engines of 1922 were the heaviest.

The Class 14C was ordered at a time when further orders of the earlier Class 14 models were unobtainable from manufacturers in the United Kingdom. The Canadian manufacturer undertook to supply engines of equivalent power, wheelbase and weight, but to their own design. As a result, bar frames substituted plate frames and several other important modifications were made.

As built, the locomotives of the fourth batch were heavier than all three previous batches, 6 long tons 7 hundredweight (6,452 kilograms) heavier than the first, 7 long tons 11 hundredweight (7,671 kilograms) heavier than the second and 5 long tons 17 hundredweight (5,944 kilograms) heavier than the third. All four batches were delivered with Type LP tenders with a coal capacity of 10 long tons (10.2 tonnes) and a water capacity of 4,250 imperial gallons (19,300 litres).

During the 1930s, many serving locomotives were reboilered with a standard boiler type designed by A.G. Watson, CME of the SAR at the time, as part of his standardisation policy. Such Watson Standard reboilered locomotives were reclassified by adding an "R" suffix to their classification.

All thirteen locomotives were eventually reboilered with Watson Standard no. 2 boilers and reclassified to Class 14CR. Only slight alterations were necessary to the engine frames. With the new boilers, the side running boards and platforms were attached to the engine frames instead of to the boilers as in the original design. In the process, the boiler pitch was raised from 7 feet 7 inches (2,311 millimetres) to 8 feet 1 ¹⁄₂ inches (2,476 millimetres), which raised the chimney height from 12 feet 9 ³⁄₈ inches (3,896 millimetres) to 13 feet ³⁄₄ inch (3,981 millimetres). This exceeded the loading gauge height of 13 feet (3,962 millimetres) above the railhead.