Swiss Locomotive & Machine Works Metropolitan-Vickers Werkspoor Robert Stephenson & Hawthorns
Serial number
SLM 2875-2934, 3655-3676 WS 747-766 RSH 7181-7190
Model
Metrovick 1E
Build date
1923-1944
Total produced
172
Rebuilder
South African Railways
Number rebuilt
35 to Classes 1ES and ES
Specifications
Configuration:
• AAR
B-B
• UIC
Bo+Bo
• Commonwealth
Bo+Bo
Gauge
3 ft 6 in (1,067 mm) Cape gauge
Wheel diameter
1,219 mm (48 in)
Minimum curve
91.45 m (300 ft)
Wheelbase
9,423 mm (30 ft 11 in)
• Bogie
2,819 mm (9 ft 3 in)
Pivot centres
6,604 mm (21 ft 8 in)
Panto shoes
8,039 mm (26 ft 4+1⁄2 in)
Length:
• Over couplers
13,310 mm (43 ft 8 in)
• Over beams
12,395 mm (40 ft 8 in)
Width
2,800 mm (9 ft 2+1⁄4 in)
Height:
• Pantograph
3,962 mm (13 ft 0 in)
• Body height
3,480 mm (11 ft 5 in)
Axle load
17,018.75 kg (37,519.9 lb)
Adhesive weight
68,075 kg (150,080 lb)
Loco weight
68,075 kg (150,080 lb)
Electric system/s
3 kV DC catenary
Current pickup(s)
Pantographs
Traction motors
Four MV 182R
• Rating 1 hour
224 kW (300 hp)
Gear ratio
17:75
MU working
4 maximum
Loco brake
Air, Rheostatic & Regenerative
Train brakes
Air & Vacuum
Couplers
Johnston link-and-pin AAR knuckle (1930s)
Performance figures
Maximum speed
72 km/h (45 mph)
Power output:
• 1 hour
896 kW (1,202 hp)
Tractive effort:
• Starting
176 kN (40,000 lbf)
• 1 hour
94 kN (21,000 lbf)
• Continuous
73 kN (16,000 lbf)
Career
Operators
South African Railways
Class
Class 1E, Class 1ES
Number in class
172
Numbers
E1-E95, E98-E122, E139-E190
Delivered
1925-1945
First run
1925
Withdrawn
c. 1990
The South African Railways Class 1E of 1925 was an electric locomotive.
Between 1925 and 1945, the South African Railways purchased 172 Class 1E electric locomotives, spread over seven orders. They were the first mainline electric locomotives to be introduced in South Africa.[1][2]
^Espitalier, T.J.; Day, W.A.J. (1946). The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued). South African Railways & Harbours Magazine, March 1946. pp. 205-208.
^South African Railways Index and Diagrams Electric and Diesel Locomotives, 610 mm and 1065 mm Gauges, Ref LXD 14/1/100/20, 28 January 1975, as amended
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