South African Class NG G14 2-6-2+2-6-2

Class NG G14 no. NG84, circa 1931

Type and origin
Power type	Steam
Designer	Hannoversche Maschinenbau AG South African Railways
Builder	Hannoversche Maschinenbau AG
Serial number	10747
Model	Class NG G14
Build date	1930
Total produced	1

Specifications
Configuration	2-6-2+2-6-2 "Double Prairie" Garratt
Gauge	2 ft (610 mm) narrow gauge
Leading dia	21 in (533 mm)
Driver diameter	30 in (762 mm)
Trailing dia	21 in (533 mm)
Wheelbase	Total: 40 ft 6 in (12,344 mm) Engine units: 5 ft 9 in (1,753 mm) coupled 13 ft 3 in (4,039 mm) total
Length	46 ft 2.375 in (14,081 mm)
Height	10 ft (3,048 mm)
Frame	Bar frame, 21 ft (6,401 mm) between pivot centres
Axle load	4 long tons (4.1 t) on 4th driver
Adhesive weight	24.1375 long tons (24.5 t)
Loco weight	37.7375 long tons (38.3 t) w/o
Fuel type	Coal
Fuel capacity	2 long tons (2.0 t)
Water cap	800 imp gal (3,600 l) front 200 imp gal (910 l) rear
Firebox: • Firegrate area	10.5 sq ft (0.975 m²)
Boiler	3 ft 6.375 in (1,076 mm) inside diameter 8 ft 5.875 in (2,588 mm) inside length 5 ft 3 in (1,600 mm) pitch
Boiler pressure	180 psi (1,240 kPa)
Heating surface	423.5 sq ft (39.344 m²)
• Tubes	73 tubes 1.75 in (44 mm) diameter 10 tubes 5.25 in (133 mm) diameter 378.5 sq ft (35.164 m²)
• Firebox	45 sq ft (4.181 m²)
Superheater: • Heating area	97.5 sq ft (9.058 m²)
Cylinders	Four
Cylinder size	9 in (229 mm) bore 16 in (406 mm) stroke
Valve gear	Walschaerts

Performance figures
Tractive effort	11,664 lbf (52 kN) at 75% pressure

Career
Operators	South African Railways
Class	Class NG G14
Number in class	1
Numbers	84
Delivered	1931
First run	1931
Withdrawn	1952

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The South African Railways Class NG G14 2-6-2+2-6-2 of 1931 is an articulated narrow gauge steam locomotive.

In 1931 the South African Railways placed a single light Class NG G14 Garratt articulated steam locomotive with a 2-6-2+2-6-2 Double Prairie type wheel arrangement in service.^[1]

Manufacturer

The locomotive was built for the South African Railways (SAR) by Hannoversche Maschinenbau AG (Hanomag) in 1930. It was only slightly larger than the Class NG G12, the smallest Garratt to ever enter service on the SAR. Upon delivery it was classified as Class NG G14 and allocated number NG84.^[1]^[2]^[3]

It had a 2-6-2+2-6-2 Double Prairie type wheel arrangement like all the narrow gauge SAR Garratts except the first, the 2-6-0+0-6-2 Class NG G11. It was very similar to the predecessor Class NG G12, but it had cylinders with a ¹⁄₂ inch (13 millimetres) larger bore which not only resulted in more power, but also an increase in axle loading. Like the Class NG G12, it also had an outside bar frame and a round top firebox, and it was superheated.^[1]^[2]

Service

The Class NG G14 was placed in service on the narrow gauge line from Fort Beaufort to Seymour, where it became stable mate to Class NG G12 no. NG57. Its service life was similar to that of no. NG57, being occasionally temporarily assigned to narrow gauge branches in other areas of the country to assist with seasonal demands on those branches.^[1]

In 1940, when the Seymour branch was regauged to Cape gauge, the Class NG G14 and Class NG G12 no. NG57 were both transferred to the Kakamas branch, where they joined Class NG G12 no. NG56 working out of Upington. All three remained there until 1949, when the Kakamas line was also widened to Cape Gauge and they were transferred to South West Africa for a brief period.^[1]

From there, no. NG56 was allocated to Port Shepstone in Natal and numbers NG57 and NG84 to Humewood Road in Port Elizabeth, where they all remained until they were withdrawn from service in 1952.^[1]

References

1 2 3 4 5 6 Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 10–11, 107. ISBN 0869772112.
1 2 Hamilton, Gavin N., The Garratt Locomotive - Garratt Locomotives from Other Builders, retrieved 10 November 2012
↑ South African Railways and Harbours Locomotive Diagram Book, 2’0” & 3’6” Gauge Steam Locomotives, 15 August 1941, as amended

Wikimedia Commons has media related to South African Class NG G14 (2-6-2+2-6-2).

Locomotives of South Africa

Steam

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4' 8½" gauge	Cape 0-4-0T Blackie Cape 0-4-2 Cape 2-4-0T CGR 0-4-0ST Aid Natal 0-4-0ST Durban Natal 0-4-0WT Natal Natal 4-4-0T Perseverance

3' 6" gauge Tank engines	CGR 0-4-0ST 1873 CGR 0-4-0ST 1874 CGR 0-4-0ST 1881 Coffee Pot CGR 0-6-0ST 1902 CGR 0-6-0T 1876 Back-to-Back CGR 2-6-0ST 1900 CGR 2-6-0ST 1902 CGR 1st Class 0-4-0ST 1875 CGR 1st Class 0-4-0ST 1876 CGR 1st Class 2-6-0ST 1876 CGR 1st Class 4-4-0T 1875 CGR 2nd Class 4-4-0T 1882 CGR 3rd Class 2-6-0T CGR Railmotor CSAR Class C CSAR Class E CSAR Rack CSAR Railmotor DSWA Eight-Coupled Tank 2-8-0T Durban's Congella Durban's Edward Innes Durban's John Milne Durban's Sir Albert Port Elizabeth Harbour 0-4-0ST Kowie Railway 0-6-0T Kowie Railway 4-4-0T Metropolitan & Suburban 4-6-2T NGR 2-6-0T Durban & Pietermaritzburg NGR Class I 2-6-2T NGR Class K 0-4-0ST NGR Class K 0-6-0ST NGR Class K 2-6-0T NZASM 10 Tonner NZASM 14 Tonner NZASM 18 Tonner NZASM 19 Tonner NZASM 32 Tonner NZASM 40 Tonner PPR 26 Tonner PPR 35 Tonner Portuguese SAR 0-4-0ST 1903 SAR 0-4-0T no. 69 SAR Class A SAR Class B SAR Class C SAR Class C1 SAR Class C2 SAR Class D SAR Class E SAR Class F SAR Class G SAR Class H SAR Class H1 SAR Class H2 SAR Class J SAR Class K SAR Clayton Railmotor

3' 6" gauge Tender engines	CGR 1st Class 2-6-0 1876 Beyer, Peacock CGR 1st Class 2-6-0 1876 Kitson CGR 1st Class 2-6-0 1879 CGR 1st Class 2-6-0 1891 CGR 1st Class 4-4-0 1879 CGR 1st Class 4-4-0TT 1881 CGR 2nd Class 2-6-2TT 1875 CGR 3rd Class 4-4-0 1883 CGR 3rd Class 4-4-0 1884 CGR 3rd Class 4-4-0 1889 CGR 3rd Class 4-4-0 1898 CGR 3rd Class 4-4-0 1901 CGR 3rd Class 4-4-0 1903 CGR 4th Class 4-4-2 CGR 4th Class 4-6-0TT 1880 CGR 4th Class 4-6-0TT 1882 CGR 4th Class 4-6-0TT 1884 CGR 5th Class 4-6-0 1890 CGR 5th Class 4-6-0 1891 DSWA Eight-Coupled Tender 2-8-0 NGR Havelock NGR Class I SAR Class Exp 1 SAR Class Exp 2 SAR Class Exp 3 SAR Class Exp 4 SAR Class Exp 5 SAR Class Exp 6 SAR Class S SAR Class S1 SAR Class S2 SAR Class 1 SAR Class 1A SAR Class 1B SAR Class 2 SAR Class 2C SAR Class 3 SAR Class 3A SAR Class 3B SAR Class 4 SAR Class 4A SAR Class 5 SAR Class 5A SAR Class 5B SAR Class 6 SAR Class 6A SAR Class 6B SAR Class 6C SAR Class 6D SAR Class 6E SAR Class 6F SAR Class 6G SAR Class 6H SAR Class 6J SAR Class 6K SAR Class 6L SAR Class 6Y SAR Class 6Z SAR Class 7 SAR Class 7A SAR Class 7B SAR Class 7C SAR Class 7D SAR Class 7E SAR Class 7F SAR Class 8 SAR Class 8A SAR Class 8B SAR Class 8C SAR Class 8D SAR Class 8E SAR Class 8F SAR Class 8R SAR Class 8X SAR Class 8Y SAR Class 8Z SAR Class 9 SAR Class 10 SAR Class 10A SAR Class 10B SAR Class 10C SAR Class 10D SAR Class 11 SAR Class 12 SAR Class 12A SAR Class 12B SAR Class 13 SAR Class 14 SAR Class 14A SAR Class 14B SAR Class 14C SAR Class 15 SAR Class 15A SAR Class 15B SAR Class 15C SAR Class 15CA SAR Class 15E SAR Class 15F SAR Class 16 SAR Class 16A SAR Class 16B SAR Class 16C SAR Class 16D SAR Class 16DA SAR Class 16E SAR Class 17 SAR Class 18 SAR Class 19 SAR Class 19A SAR Class 19B SAR Class 19C SAR Class 19D SAR Class 20 SAR Class 21 SAR Class 23 SAR Class 24 SAR Class 25 SAR Class 25NC SAR Class 26 Red Devil

3' 6" gauge Articulated engines	CGR Fairlie CGR Kitson-Meyer SAR Class FC SAR Class FD SAR Class GA SAR Class GB SAR Class GC SAR Class GCA SAR Class GD SAR Class GDA SAR Class GE SAR Class GEA SAR Class GF SAR Class GG SAR Class GH SAR Class GK SAR Class GL SAR Class GM SAR Class GMA SAR Class GO SAR Class HF SAR Class KM SAR Class MA SAR Class MB SAR Class MC SAR Class MC1 SAR Class MD SAR Class ME SAR Class MF SAR Class MG SAR Class MH SAR Class MJ SAR Class MJ1 SAR Class U

2' 6" gauge	Cape Copper 0-6-0T 1871 Cape Copper Britannia Cape Copper Caledonia Cape Copper Clara Class Cape Copper Condenser Cape Copper Scotia Class Namaqua Copper Pioneer

2' & 600mm gauges	ACR Class NG-G16A CGR NG 0-6-0T CGR NG 4-6-2T CGR Type A 2-6-4T CGR Type C 0-4-0T DSWA Class Ha DSWA Class Hb DSWA Class Hc DSWA Class Hd DSWA Jung DSWA Zwillinge NGR Class N 4-6-2T SAR NG 0-4-0T 1899 SAR Class NG1 SAR Class NG2 SAR Class NG3 SAR Class NG4 SAR Class NG5 SAR Class NG6 SAR Class NG7 SAR Class NG8 SAR Class NG9 SAR Class NG10 SAR Class NG-G11 SAR Class NG-G12 SAR Class NG-G13 SAR Class NG-G14 SAR Class NG15 SAR Class NG-G16

Electric

Amcoal Class E38

Diesel

3' 6" gauge Diesel-electric	PRASA Class Afro 4000 SAR Class DS SAR Class DS1 SAR Class 31-000 SAR Class 32-000 SAR Class 32-200 SAR Class 33-000 SAR Class 33-200 SAR Class 33-400 SAR Class 34-000 SAR Class 34-200 SAR Class 34-400 SAR Class 34-500 SAR Class 34-600 SAR Class 34-800 SAR Class 34-900 SAR Class 35-000 SAR Class 35-200 SAR Class 35-400 SAR Class 35-600 SAR Class 36-000 SAR Class 36-200 SAR Class 37-000 Spoornet Class 39-000 TFR Class 35-800 TFR Class 39-200 TFR Class 43-000 TFR Class 44-000

2' gauge Diesel-electric	SAR Class 91-000

3' 6" gauge Diesel-hydraulic	SAR Class 61-000

3' 6" gauge Electro-diesel	Spoornet Class 38-000

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