South African Class 16C 4-6-2

Specifications
Specifications
Configuration:;
• Whyte	4-6-2 (Pacific)
• UIC	2'C1'h2
Driver	2nd coupled axle
Gauge	3 ft 6 in (1,067 mm) Cape gauge
Leading dia.	30 in (762 mm)
Coupled dia.	♠♥ 60 in (1,524 mm); ʘ 63 in (1,600 mm)
Trailing dia.	33 in (838 mm)
Tender wheels	34 in (864 mm)
Wheelbase	55 ft 11+3⁄4 in (17,062 mm)
• Engine	29 ft 5+1⁄2 in (8,979 mm)
• Leading	6 ft 2 in (1,880 mm)
• Coupled	10 ft 9 in (3,277 mm)
• Tender	16 ft 9 in (5,105 mm)
• Tender bogie	4 ft 7 in (1,397 mm)
Length:;
• Over couplers	64 ft 4+1⁄8 in (19,612 mm)
Height	♠ 12 ft 10 in (3,912 mm); ʘ 12 ft 11+1⁄2 in (3,950 mm); ♥ 12 ft 11+1⁄4 in (3,943 mm)
Frame type	Plate
Axle load	♠♥ 17 LT 14 cwt (17,980 kg); ʘ 18 LT 3 cwt (18,440 kg)
• Leading	♠ʘ 16 LT 1 cwt (16,310 kg); ♥ 16 LT 12 cwt (16,870 kg)
• Coupled	♠ 17 LT 14 cwt (17,980 kg)
• 1st coupled	ʘ 18 LT 1 cwt (18,340 kg); ♥ 17 LT 11 cwt (17,830 kg)
• 2nd coupled	ʘ 18 LT 3 cwt (18,440 kg); ♠♥ 17 LT 14 cwt (17,980 kg)
• 3rd coupled	ʘ 18 LT 1 cwt (18,340 kg); ♥ 17 LT 11 cwt (17,830 kg)
• Trailing	♠ʘ 13 LT 4 cwt (13,410 kg); ♥ 13 LT 7 cwt (13,560 kg)
• Tender bogie	Bogie 1: 27 LT 10 cwt (27,940 kg); Bogie 2: 23 LT 11 cwt (23,930 kg)
• Tender axle	13 LT 15 cwt (13,970 kg)
Adhesive weight	♠ 53 LT 2 cwt (53,950 kg); ʘ 54 LT 5 cwt (55,120 kg); ♥ 52 LT 16 cwt (53,650 kg)
Loco weight	♠ 82 LT 7 cwt (83,670 kg); ʘ 83 LT 10 cwt (84,840 kg); ♥ 82 LT 15 cwt (84,080 kg)
Tender weight	51 LT 1 cwt (51,870 kg)
Total weight	♠ 133 LT 8 cwt (135,500 kg); ʘ 134 LT 11 cwt (136,700 kg); ♥ 133 LT 16 cwt (135,900 kg)
Tender type	MP1 (2-axle bogies); MP, MP1, MR, MS, MT, MT1, MT2, MX, MY, MY1 permitted
Fuel type	Coal
Fuel capacity	10 LT (10.2 t)
Water cap.	4,250 imp gal (19,300 L)
Firebox:
• Type	♠ Belpaire; ♥ Round-top
• Grate area	♠♥ 37 sq ft (3.4 m2)
Boiler:;
• Model	Watson Standard no. 2B
• Pitch	♠ 7 ft 9 in (2,362 mm); ʘ 7 ft 10+1⁄2 in (2,400 mm); ♥ 8 ft (2,438 mm)
• Diameter	♠ 5 ft 4+3⁄8 in (1,635 mm); ♥ 5 ft 7+1⁄2 in (1,714 mm)
• Tube plates	♠ 15 ft 10+1⁄2 in (4,839 mm); ♥♣ 18 ft 4 in (5,588 mm); ♥♦ 18 ft 3+5⁄8 in (5,578 mm)
• Small tubes	♠ 113: 2+1⁄4 in (57 mm); ♥ 87: 2+1⁄2 in (64 mm)
• Large tubes	♠ 21: 5+1⁄2 in (140 mm); ♥ 30: 5+1⁄2 in (140 mm)
Boiler pressure	♠♥ 190 psi (1,310 kPa); ʘ 200 psi (1,379 kPa)
Safety valve	♠ Ramsbottom - ♥ Pop
Heating surface:
• Firebox	♠ 178 sq ft (16.5 m2); ♥ 142 sq ft (13.2 m2)
• Tubes	♠ 1,534 sq ft (142.5 m2); ♥ 1,836 sq ft (170.6 m2)
• Total surface	♠ 1,712 sq ft (159.1 m2); ♥ 1,978 sq ft (183.8 m2)
Superheater:;
• Type	Robinson
• Heating area	♠ 313 sq ft (29.1 m2); ♥ 472 sq ft (43.9 m2)
Cylinders	Two
Cylinder size	22 in (559 mm) bore; 26 in (660 mm) stroke
Valve gear	Walschaerts
Valve type	Piston
Couplers	Johnston link-and-pin; AAR knuckle (1930s)

Type and origin
Type and origin
	♠ Class 16C as built with a Belpaire firebox; ♥ Class 16CR rebuilt with a Watson Standard boiler; ʘ Larger 63 inch coupled wheels; ♣ Steel firebox - ♦ Copper firebox
Power type	Steam
Designer	South African Railways; (D. A. Hendrie)
Builder	North British Locomotive Company
Serial number	21708-21717 (812-821); 22716-22735 (822-841)
Model	Class 16C
Build date	1919-1922
Total produced	30

South African Class 16C & 16CR 4-6-2
South African Class 16C & 16CR 4-6-2
	Class 16C no. 825, as built, with Belpaire firebox
Power type
Type and origin
	♠ Class 16C as built with a Belpaire firebox; ♥ Class 16CR rebuilt with a Watson Standard boiler; ʘ Larger 63 inch coupled wheels; ♣ Steel firebox - ♦ Copper firebox
Power type	Steam
Designer	South African Railways; (D. A. Hendrie)
Builder	North British Locomotive Company
Serial number	21708-21717 (812-821); 22716-22735 (822-841)
Model	Class 16C
Build date	1919-1922
Total produced	30
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-2 (Pacific)
• UIC	2'C1'h2
Driver	2nd coupled axle
Gauge	3 ft 6 in (1,067 mm) Cape gauge
Leading dia.	30 in (762 mm)
Coupled dia.	♠♥ 60 in (1,524 mm); ʘ 63 in (1,600 mm)
Trailing dia.	33 in (838 mm)
Tender wheels	34 in (864 mm)
Wheelbase	55 ft 11+3⁄4 in (17,062 mm)
• Engine	29 ft 5+1⁄2 in (8,979 mm)
• Leading	6 ft 2 in (1,880 mm)
• Coupled	10 ft 9 in (3,277 mm)
• Tender	16 ft 9 in (5,105 mm)
• Tender bogie	4 ft 7 in (1,397 mm)
Length:;
• Over couplers	64 ft 4+1⁄8 in (19,612 mm)
Height	♠ 12 ft 10 in (3,912 mm); ʘ 12 ft 11+1⁄2 in (3,950 mm); ♥ 12 ft 11+1⁄4 in (3,943 mm)
Frame type	Plate
Axle load	♠♥ 17 LT 14 cwt (17,980 kg); ʘ 18 LT 3 cwt (18,440 kg)
• Leading	♠ʘ 16 LT 1 cwt (16,310 kg); ♥ 16 LT 12 cwt (16,870 kg)
• Coupled	♠ 17 LT 14 cwt (17,980 kg)
• 1st coupled	ʘ 18 LT 1 cwt (18,340 kg); ♥ 17 LT 11 cwt (17,830 kg)
• 2nd coupled	ʘ 18 LT 3 cwt (18,440 kg); ♠♥ 17 LT 14 cwt (17,980 kg)
• 3rd coupled	ʘ 18 LT 1 cwt (18,340 kg); ♥ 17 LT 11 cwt (17,830 kg)
• Trailing	♠ʘ 13 LT 4 cwt (13,410 kg); ♥ 13 LT 7 cwt (13,560 kg)
• Tender bogie	Bogie 1: 27 LT 10 cwt (27,940 kg); Bogie 2: 23 LT 11 cwt (23,930 kg)
• Tender axle	13 LT 15 cwt (13,970 kg)
Adhesive weight	♠ 53 LT 2 cwt (53,950 kg); ʘ 54 LT 5 cwt (55,120 kg); ♥ 52 LT 16 cwt (53,650 kg)
Loco weight	♠ 82 LT 7 cwt (83,670 kg); ʘ 83 LT 10 cwt (84,840 kg); ♥ 82 LT 15 cwt (84,080 kg)
Tender weight	51 LT 1 cwt (51,870 kg)
Total weight	♠ 133 LT 8 cwt (135,500 kg); ʘ 134 LT 11 cwt (136,700 kg); ♥ 133 LT 16 cwt (135,900 kg)
Tender type	MP1 (2-axle bogies); MP, MP1, MR, MS, MT, MT1, MT2, MX, MY, MY1 permitted
Fuel type	Coal
Fuel capacity	10 LT (10.2 t)
Water cap.	4,250 imp gal (19,300 L)
Firebox:
• Type	♠ Belpaire; ♥ Round-top
• Grate area	♠♥ 37 sq ft (3.4 m2)
Boiler:;
• Model	Watson Standard no. 2B
• Pitch	♠ 7 ft 9 in (2,362 mm); ʘ 7 ft 10+1⁄2 in (2,400 mm); ♥ 8 ft (2,438 mm)
• Diameter	♠ 5 ft 4+3⁄8 in (1,635 mm); ♥ 5 ft 7+1⁄2 in (1,714 mm)
• Tube plates	♠ 15 ft 10+1⁄2 in (4,839 mm); ♥♣ 18 ft 4 in (5,588 mm); ♥♦ 18 ft 3+5⁄8 in (5,578 mm)
• Small tubes	♠ 113: 2+1⁄4 in (57 mm); ♥ 87: 2+1⁄2 in (64 mm)
• Large tubes	♠ 21: 5+1⁄2 in (140 mm); ♥ 30: 5+1⁄2 in (140 mm)
Boiler pressure	♠♥ 190 psi (1,310 kPa); ʘ 200 psi (1,379 kPa)
Safety valve	♠ Ramsbottom - ♥ Pop
Heating surface:
• Firebox	♠ 178 sq ft (16.5 m2); ♥ 142 sq ft (13.2 m2)
• Tubes	♠ 1,534 sq ft (142.5 m2); ♥ 1,836 sq ft (170.6 m2)
• Total surface	♠ 1,712 sq ft (159.1 m2); ♥ 1,978 sq ft (183.8 m2)
Superheater:;
• Type	Robinson
• Heating area	♠ 313 sq ft (29.1 m2); ♥ 472 sq ft (43.9 m2)
Cylinders	Two
Cylinder size	22 in (559 mm) bore; 26 in (660 mm) stroke
Valve gear	Walschaerts
Valve type	Piston
Couplers	Johnston link-and-pin; AAR knuckle (1930s)
Tractive effort
Performance figures
Tractive effort	♠♥ 29,890 lbf (133.0 kN) @ 75%; ʘ 29,960 lbf (133.3 kN) @ 75%
Operators
Career
Operators	South African Railways
Class	Class 16C & 16CR
Number in class	30
Numbers	812-841
Delivered	1919-1922
First run	1919
Withdrawn	1976
	As built, the 2nd coupled axle had flangeless wheels

The South African Railways Class 16C 4-6-2 of 1919 was a steam locomotive.

During 1919, the South African Railways placed ten Class 16C steam locomotives with a 4-6-2 Pacific type wheel arrangement in mainline passenger service. Another twenty entered service in 1922. Unlike the earlier Classes 16 and 16B, these locomotives had combustion chambers.^[1]^[2]^[3]^[4]

^ Holland, D. F. (1972). Steam Locomotives of the South African Railways. Vol. 2: 1910-1955 (1st ed.). Newton Abbott, England: David & Charles. p. 38. ISBN 978-0-7153-5427-8.
^ Espitalier, T.J.; Day, W.A.J. (1945). The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued). South African Railways and Harbours Magazine, September 1945. pp. 674-675.
^ North British Locomotive Company works list, compiled by Austrian locomotive historian Bernhard Schmeiser
^ Durrant, AE (1989). Twilight of South African Steam (1st ed.). Newton Abbott: David & Charles. pp. 92–93. ISBN 0715386387.

[Holland_2-1] Holland, D. F. (1972). Steam Locomotives of the South African Railways. Vol. 2: 1910-1955 (1st ed.). Newton Abbott, England: David & Charles. p. 38. ISBN 978-0-7153-5427-8.

[SAR&H_Sep_1945-2] Espitalier, T.J.; Day, W.A.J. (1945). The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued). South African Railways and Harbours Magazine, September 1945. pp. 674-675.

[NBL-3] North British Locomotive Company works list, compiled by Austrian locomotive historian Bernhard Schmeiser

[Durrant-4] Durrant, AE (1989). Twilight of South African Steam (1st ed.). Newton Abbott: David & Charles. pp. 92–93. ISBN 0715386387.

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