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South African class MJ
South Africa | 1914 | 18 produced
No. 1651
No. 1651
SAR archivees / collection Frank Holland
Variantas builtrebuilt
General
Built1914-19211939
ManufacturerMaffei, North British
Axle config2-6-6-0 (Mogul Mallet) 
Gauge3 ft 6 in (Cape gauge)
Dimensions and Weights
Length67 ft 5 1/8 in
Wheelbase32 ft 8 in
Fixed wheelbase8 ft 4 in
Total wheelbase58 ft 11 1/2 in
Service weight188,160 lbs
Adhesive weight170,576 lbs
Total weight309,232 lbs
Axle load30,800 lbs
Water capacity5,104 us gal
Fuel capacity22,400 lbs (coal)
Power
Power sourcesteam
Estimated power1,250 hp (932 kW)
Optimal speed22 mph
Starting effort37,046 lbf
with start valve44,455 lbf
Power Plant
Driver diameter42.8 in
Boiler pressure200 psi
Expansion typecompound
Cylindersfour, HP: 16 1/2 x 24 in
and LP: 26 x 24 in
Boiler
Grate area40 sq ft
Firebox area130 sq ft133 sq ft
Tube heating area1,783 sq ft1,780 sq ft
Evaporative heating area1,913 sq ft
Superheater area343 sq ft350 sq ft
Total heating area2,256 sq ft2,263 sq ft
Calculated Values
steam locomotive
passenger
freight
Mallet
last changed: 10 2023
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