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Page views since 2023-01-26: 436884

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 CC BY-SA: Attribution-ShareAlike

General
Built	1954-1958
Manufacturer	Beyer, Peacock & Co.
Axle config	4-8-2+2-8-4T (Double Mountain (Garratt))
Gauge	4 ft 8 1/2 in (Standard gauge)

Dimensions and Weights
Length	103 ft 2 in
Service weight	500,416 lbs
Adhesive weight	305,312 lbs
Axle load	38,080 lbs
Water capacity	9,608 us gal
Fuel capacity	30,800 lbs (coal)

Boiler
Grate area	63.1 sq ft
Firebox area	233 sq ft
Tube heating area	2,791 sq ft
Evaporative heating area	3,024 sq ft
Superheater area	748 sq ft
Total heating area	3,772 sq ft

Power Plant
Driver diameter	51 in
Boiler pressure	200 psi
Expansion type	simple
Cylinders	four, 20 x 26 in

Power
Power source	steam
Estimated power	2,125 hp (1,585 kW)
Optimal speed	20 mph
Top speed	43 mph
Starting effort	69,333 lbf

Calculated Values
Factor of adhesion	1 : 4.41
Power-to-weight ratio	0.0042 hp/lb
Heating Area Equivalent	5,685 sq ft
Cylinder volume/HAE	1 : 1013.74
Adhesive weight/Total	1 : 1.64
Tractive force/Heating area	1 : 4132.20
Grate area/Heating area	1 : 56.09
Firebox/Tube area	1 : 15.19
Total/Superheater	1 : 4.04

steam locomotive

freight

passenger

Garratt

last changed: 01 2024

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