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Rhodesia Railways classes 20 and 20A
Rhodesia | 1954 | 61 produced
20A No. 747 in July 1990 at the coaling station in Dete station
20A No. 747 in July 1990 at the coaling station in Dete station
H.G.Graser
General
Built1954-1958
ManufacturerBeyer, Peacock & Co.
Axle config4-8-2+2-8-4T (Double Mountain (Garratt)) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length103 ft 2 in
Service weight500,416 lbs
Adhesive weight305,312 lbs
Axle load38,080 lbs
Water capacity9,608 us gal
Fuel capacity30,800 lbs (coal)
Power
Power sourcesteam
Estimated power2,125 hp (1,585 kW)
Optimal speed20 mph
Top speed43 mph
Starting effort69,333 lbf
Power Plant
Driver diameter51 in
Boiler pressure200 psi
Expansion typesimple
Cylindersfour, 20 x 26 in
Boiler
Grate area63.1 sq ft
Firebox area233 sq ft
Tube heating area2,791 sq ft
Evaporative heating area3,024 sq ft
Superheater area748 sq ft
Total heating area3,772 sq ft
Calculated Values
steam locomotive
freight
passenger
Garratt
last changed: 01 2024
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