South African Class 39-200

South African Class 39-200

No. 39-242 at Pyramid South, Pretoria, 14 May 2013
Type and origin
Power type Diesel-electric
Designer Electro-Motive Diesel
Builder Transnet Rail Engineering
Model EMD GT26CU-3
Build date 2009-2010
Total produced 50
Specifications
AAR wheel arr. C-C
UIC classification Co'Co'
Gauge 3 ft 6 in (1,067 mm) Cape gauge
Bogies 3.632 m (11 ft 11 in) wheelbase
Wheel diameter 1,016 mm (40 in)
Wheelbase 14.732 m (48 ft 4 in)
Length 19.202 m (63 ft 0 in)
Width 3 m (9 ft 10 in)
Height 3.924 m (12 ft 10.5 in)
Axle load 21,000 kg (20.7 long tons)
Locomotive weight 126,000 kg (124.0 long tons)[1]
Fuel type Fuel oil
Fuel capacity 7,400 litres (2,000 US gal)
Prime mover EMD 645-E3B 2 stroke V16
Engine type Diesel
Displacement 10.570 litres (645 cu in) per cylinder
169.12 litres (10,320 cu in) total
Traction motors Six EMD D43 DC
Performance figures
Power output 2,460 kW (3,300 hp)
Tractive effort 350 kN (79,000 lbf) starting
305 kN (69,000 lbf) continuous
Factor of
adhesion
25% starting
20% continuous
Locomotive brake Air & Dynamic braking
Train brakes Air & Vacuum
Safety systems EM2000 control system
Career
Operator(s) Transnet Freight Rail
Class Class 39-200
Number in class 50
Number(s) 39-201 to 39-250
Delivered 2009-2010
First run 2009

The South African Class 39-200 of 2009 is a South African diesel-electric locomotive from the Transnet Freight Rail era.

Near the end of 2009 the first of fifty Class 39-200 Electro-Motive Diesel type GT26CU-3 diesel-electric locomotives were placed in service by Transnet Freight Rail. The locomotives were built new after an earlier project to rebuild older locomotives to Class 39-000 locomotives was aborted.[2]

Manufacture

The Class 39-000 project

In 2005 Transwerk, later renamed Transnet Rail Engineering (TRE) and, in 2013, Transnet Engineering, commenced a project of rebuilding existing locomotives to Class 39-000 locomotives for Spoornet. The Electro-Motive Diesel type EMD GT26CU-3 diesel-electric locomotives were to be rebuilt from Classes 34-600 and 34-800 type GT26MC and Class 37-000 type GT26M2C locomotives. The original locomotives had all been designed by General Motors Electro-Motive Division (GM-EMD) and had been built by General Motors South Africa (GMSA) in Port Elizabeth between 1974 and 1981. Suitable frames from wrecked locomotives were used.[3]

The rebuilding was done at the Transwerk shops in Bloemfontein. It was intended to produce one hundred Class 39-000s, but in spite of the technical success of the TRE part of the project, rebuilding was halted after completing only five locomotives, allegedly due to higher than anticipated cost. It was decided, instead of rebuilding one hundred old locomotives, to rather continue the program by building fifty new Class 39-200 locomotives.[2]

The new Class 39-200

The Class 39-200 locomotives were built new from imported and locally produced components at the Koedoespoort TRE shops east of Pretoria, in collaboration with EMD. By October 2009 more than twenty locomotives had been built and were undergoing road testing, and by April 2010 the last of the fifty locomotives came off the production line, thereby completing the building project in twelve months. They were numbered in the range from 39-201 to 39-250.[4]

Features

Characteristics that distinguish the Class 39-200 from the existing TFR diesel-electric locomotive fleet, which was more than three decades old at the time, are features such as EM2000 microprocessor control, 26% more maximum continuous tractive effort and 15% more tractive horsepower compared to a Class 37-000, and a Knorr-Bremse electronic brake rack (EBR) instead of the old pneumatic braking controls.[5]

The EM2000 control system featured in the Class 39-200 is a proprietary EMD microprocessor-based system that offers improved performance and reliability compared with older locomotives. It manages all critical operating functions and greatly improves tractive effort, while its creep control attains high and low speed adhesion advantages.[6]

Service

The Class 39-200 locomotives were placed in service on the line between the Mpumalanga Lowveld and northern KwaZulu-Natal, working from Lydenburg via Swaziland and Golela to the coal export harbour at Richards Bay.[4][7] In 2013 some Class 39-200s were also observed at the Pyramid South locomotive depot north of Pretoria, along with the predecessor Class 39-000s.

Sides illustrated

All the Class 39-200 locomotives were delivered in the Transnet Freight Rail livery.

See also

References