South African Class 10C 4-6-2

Specifications
Specifications
Configuration:;
• Whyte	4-6-2 (Pacific)
• UIC	♠ 2'C1'n2 - ♥ 2'C1'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.	57 in (1,448 mm)
Trailing dia.	33 in (838 mm)
Tender wheels	ʘʘ 33+1⁄2 in (851 mm) as built; ʘʘ 34 in (864 mm) retyred
Wheelbase	52 ft 4+1⁄2 in (15,964 mm)
• Engine	28 ft 7+1⁄2 in (8,725 mm)
• Leading	6 ft (1,829 mm)
• Coupled	10 ft (3,048 mm)
• Tender	ʘ 14 ft 7 in (4,445 mm); ʘ 16 ft 9 in (5,105 mm)
• Tender bogie	ʘʘ 4 ft 7 in (1,397 mm)
Length:;
• Over couplers	ʘ 59 ft 3⁄4 in (18,002 mm); ʘ 62 ft 9 in (19,126 mm)
Height	♠♥ 12 ft 10 in (3,912 mm); ♣ 12 ft 11 in (3,937 mm)
Axle load	♠ 14 LT (14,220 kg); ♥ 14 LT 14 cwt (14,940 kg); ♣ 15 LT 6 cwt (15,550 kg)
• Leading	♠ 11 LT 11 cwt (11,740 kg); ♥ 13 LT 12 cwt (13,820 kg); ♣ 15 LT 6 cwt (15,550 kg)
• Coupled	♠ 14 LT (14,220 kg)
• 1st coupled	♥ 13 LT 19 cwt (14,170 kg); ♣ 14 LT 14 cwt (14,940 kg)
• 2nd coupled	♥ 14 LT 14 cwt (14,940 kg); ♣ 15 LT 6 cwt (15,550 kg)
• 3rd coupled	♥ 14 LT 2 cwt (14,330 kg); ♣ 14 LT 14 cwt (14,940 kg)
• Trailing	♠ 11 LT 4 cwt (11,380 kg); ♥ 11 LT 15 cwt (11,940 kg); ♣ 12 LT 6 cwt (12,500 kg)
• Tender bogie	Bogie 1:; ʘ 17 LT (17,270 kg); ʘ 24 LT 4 cwt (24,590 kg); Bogie 2:; ʘ 17 LT 16 cwt (18,090 kg); ʘ 25 LT 3 cwt (25,550 kg)
• Tender axle	ʘ 8 LT 18 cwt (9,043 kg); ʘ 12 LT 11 cwt 2 qtr (12,780 kg)
Adhesive weight	♠ 42 LT (42,670 kg); ♥ 42 LT 15 cwt (43,440 kg); ♣ 44 LT 14 cwt (45,420 kg)
Loco weight	♠ 64 LT 15 cwt (65,790 kg); ♥ 68 LT 2 cwt (69,190 kg); ♣ 72 LT 6 cwt (73,460 kg)
Tender weight	ʘ 34 LT 16 cwt (35,360 kg); ʘ 49 LT 7 cwt (50,140 kg)
Total weight	♠ʘ 99 LT 11 cwt (101,100 kg); ♠ʘ 114 LT 2 cwt (115,900 kg); ♥ʘ 102 LT 18 cwt (104,600 kg); ♥ʘ 117 LT 9 cwt (119,300 kg); ♣ʘ 121 LT 13 cwt (123,600 kg)
Tender type	XC (2-axle bogies); XM2 (2-axle bogies); XC, XC1, XD, XE, XE1, XF, XF1, XF2, XJ, XM, XM1, XM2, XM3, XM4, XP1, XS permitted
Fuel type	Coal
Fuel capacity	ʘ 5 LT (5.1 t); ʘ 10 LT (10.2 t)
Water cap.	ʘ 2,600 imp gal (11,800 L); ʘ 4,000 imp gal (18,200 L)
Generator	Pyle National turbo-generator
Firebox:
• Type	♠ Belpaire - ♣ Round-top
• Grate area	♠♥ 32 sq ft (3.0 m2); ♣ 36 sq ft (3.3 m2)
Boiler:;
• Model	♣ Watson Standard no. 1
• Pitch	♠♥ 7 ft 4 in (2,235 mm); ♣ 8 ft (2,438 mm)
• Diameter	♠♥ 4 ft 8+1⁄4 in (1,429 mm); ♣ 5 ft (1,524 mm)
• Tube plates	♠♥ 16 ft 6+1⁄2 in (5,042 mm); ♣ 17 ft 9 in (5,410 mm)
• Small tubes	♠ 183: 2+1⁄4 in (57 mm); ♥ 100: 2+1⁄4 in (57 mm); ♣ 76 2+1⁄2 in (64 mm)
• Large tubes	♥ 18: 5+1⁄2 in (140 mm); ♣ 24: 5+1⁄2 in (140 mm)
Boiler pressure	♠♥♣ 200 psi (1,379 kPa)
Safety valve	♠♥ Ramsbottom; ♣ Pop
Heating surface:
• Firebox	♠♥ 122 sq ft (11.3 m2); ♣ 123 sq ft (11.4 m2)
• Tubes	♠ 1,783 sq ft (165.6 m2); ♥ 1,403 sq ft (130.3 m2); ♣ 1,497 sq ft (139.1 m2)
• Total surface	♠ 1,905 sq ft (177.0 m2); ♥ 1,525 sq ft (141.7 m2); ♣ 1,620 sq ft (151 m2)
Superheater:;
• Heating area	♥ 345 sq ft (32.1 m2); ♣ 366 sq ft (34.0 m2)
Cylinders	Two
Cylinder size	♠♥♣ 18 in (457 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 10C as built with a Belpaire firebox; ♥ Class 10C, superheated; ♣ Class 10CR rebuilt with a Watson Standard boiler; ʘ Type XC tender - ʘ Type XM2 tender
Power type	Steam
Designer	Central South African Railways; (G.G. Elliot)
Builder	North British Locomotive Company
Serial number	19195-19206
Model	CSAR Class 10-C
Build date	1910
Total produced	12

CSAR Class 10-C 4-6-2
South African Class 10C & 10CR 4-6-2
CSAR Class 10-C 4-6-2; South African Class 10C & 10CR 4-6-2
	Class 10CR no. 778 passing Woltemade No. 4, near present-day Thornton, c. 1940
Power type
Type and origin
	♠ Class 10C as built with a Belpaire firebox; ♥ Class 10C, superheated; ♣ Class 10CR rebuilt with a Watson Standard boiler; ʘ Type XC tender - ʘ Type XM2 tender
Power type	Steam
Designer	Central South African Railways; (G.G. Elliot)
Builder	North British Locomotive Company
Serial number	19195-19206
Model	CSAR Class 10-C
Build date	1910
Total produced	12
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-2 (Pacific)
• UIC	♠ 2'C1'n2 - ♥ 2'C1'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.	57 in (1,448 mm)
Trailing dia.	33 in (838 mm)
Tender wheels	ʘʘ 33+1⁄2 in (851 mm) as built; ʘʘ 34 in (864 mm) retyred
Wheelbase	52 ft 4+1⁄2 in (15,964 mm)
• Engine	28 ft 7+1⁄2 in (8,725 mm)
• Leading	6 ft (1,829 mm)
• Coupled	10 ft (3,048 mm)
• Tender	ʘ 14 ft 7 in (4,445 mm); ʘ 16 ft 9 in (5,105 mm)
• Tender bogie	ʘʘ 4 ft 7 in (1,397 mm)
Length:;
• Over couplers	ʘ 59 ft 3⁄4 in (18,002 mm); ʘ 62 ft 9 in (19,126 mm)
Height	♠♥ 12 ft 10 in (3,912 mm); ♣ 12 ft 11 in (3,937 mm)
Axle load	♠ 14 LT (14,220 kg); ♥ 14 LT 14 cwt (14,940 kg); ♣ 15 LT 6 cwt (15,550 kg)
• Leading	♠ 11 LT 11 cwt (11,740 kg); ♥ 13 LT 12 cwt (13,820 kg); ♣ 15 LT 6 cwt (15,550 kg)
• Coupled	♠ 14 LT (14,220 kg)
• 1st coupled	♥ 13 LT 19 cwt (14,170 kg); ♣ 14 LT 14 cwt (14,940 kg)
• 2nd coupled	♥ 14 LT 14 cwt (14,940 kg); ♣ 15 LT 6 cwt (15,550 kg)
• 3rd coupled	♥ 14 LT 2 cwt (14,330 kg); ♣ 14 LT 14 cwt (14,940 kg)
• Trailing	♠ 11 LT 4 cwt (11,380 kg); ♥ 11 LT 15 cwt (11,940 kg); ♣ 12 LT 6 cwt (12,500 kg)
• Tender bogie	Bogie 1:; ʘ 17 LT (17,270 kg); ʘ 24 LT 4 cwt (24,590 kg); Bogie 2:; ʘ 17 LT 16 cwt (18,090 kg); ʘ 25 LT 3 cwt (25,550 kg)
• Tender axle	ʘ 8 LT 18 cwt (9,043 kg); ʘ 12 LT 11 cwt 2 qtr (12,780 kg)
Adhesive weight	♠ 42 LT (42,670 kg); ♥ 42 LT 15 cwt (43,440 kg); ♣ 44 LT 14 cwt (45,420 kg)
Loco weight	♠ 64 LT 15 cwt (65,790 kg); ♥ 68 LT 2 cwt (69,190 kg); ♣ 72 LT 6 cwt (73,460 kg)
Tender weight	ʘ 34 LT 16 cwt (35,360 kg); ʘ 49 LT 7 cwt (50,140 kg)
Total weight	♠ʘ 99 LT 11 cwt (101,100 kg); ♠ʘ 114 LT 2 cwt (115,900 kg); ♥ʘ 102 LT 18 cwt (104,600 kg); ♥ʘ 117 LT 9 cwt (119,300 kg); ♣ʘ 121 LT 13 cwt (123,600 kg)
Tender type	XC (2-axle bogies); XM2 (2-axle bogies); XC, XC1, XD, XE, XE1, XF, XF1, XF2, XJ, XM, XM1, XM2, XM3, XM4, XP1, XS permitted
Fuel type	Coal
Fuel capacity	ʘ 5 LT (5.1 t); ʘ 10 LT (10.2 t)
Water cap.	ʘ 2,600 imp gal (11,800 L); ʘ 4,000 imp gal (18,200 L)
Generator	Pyle National turbo-generator
Firebox:
• Type	♠ Belpaire - ♣ Round-top
• Grate area	♠♥ 32 sq ft (3.0 m2); ♣ 36 sq ft (3.3 m2)
Boiler:;
• Model	♣ Watson Standard no. 1
• Pitch	♠♥ 7 ft 4 in (2,235 mm); ♣ 8 ft (2,438 mm)
• Diameter	♠♥ 4 ft 8+1⁄4 in (1,429 mm); ♣ 5 ft (1,524 mm)
• Tube plates	♠♥ 16 ft 6+1⁄2 in (5,042 mm); ♣ 17 ft 9 in (5,410 mm)
• Small tubes	♠ 183: 2+1⁄4 in (57 mm); ♥ 100: 2+1⁄4 in (57 mm); ♣ 76 2+1⁄2 in (64 mm)
• Large tubes	♥ 18: 5+1⁄2 in (140 mm); ♣ 24: 5+1⁄2 in (140 mm)
Boiler pressure	♠♥♣ 200 psi (1,379 kPa)
Safety valve	♠♥ Ramsbottom; ♣ Pop
Heating surface:
• Firebox	♠♥ 122 sq ft (11.3 m2); ♣ 123 sq ft (11.4 m2)
• Tubes	♠ 1,783 sq ft (165.6 m2); ♥ 1,403 sq ft (130.3 m2); ♣ 1,497 sq ft (139.1 m2)
• Total surface	♠ 1,905 sq ft (177.0 m2); ♥ 1,525 sq ft (141.7 m2); ♣ 1,620 sq ft (151 m2)
Superheater:;
• Heating area	♥ 345 sq ft (32.1 m2); ♣ 366 sq ft (34.0 m2)
Cylinders	Two
Cylinder size	♠♥♣ 18 in (457 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	♠♥♣ 22,170 lbf (98.6 kN) @ 75%
Operators
Career
Operators	Central South African Railways; South African Railways
Class	CSAR Class 10-C, SAR Class 10C
Number in class	12
Numbers	CSAR 1003-1014, SAR 767-778
Delivered	1910-1911
First run	1910
Withdrawn	1973

The South African Railways Class 10C 4-6-2 of 1910 was a steam locomotive from the pre-Union era in Transvaal.

In 1910, the Central South African Railways placed twelve Class 10-C 4-6-2 Pacific type steam locomotives in service. In 1912, these locomotives were renumbered and designated Class 10C on the South African Railways roster.^[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. pp. 14–17, 140. 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. South African Railways and Harbours Magazine, April 1945. pp. 274-275.
^ Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. p. 53. ISBN 0869772112.
^ Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer's Office, Pretoria, January 1912, pp. 9, 12, 15, 35 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)

[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. pp. 14–17, 140. ISBN 978-0-7153-5427-8.

[SAR&H_Apr_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. South African Railways and Harbours Magazine, April 1945. pp. 274-275.

[Paxton-Bourne-3] Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. p. 53. ISBN 0869772112.

[SAR_Renumber-4] Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer's Office, Pretoria, January 1912, pp. 9, 12, 15, 35 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)

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