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Page views since 2023-01-26: 437560

South Africa | 1914 | 18 produced

No. 1651

No. 1651

SAR archivees / collection Frank Holland

Variant	as built	rebuilt

General
Built	1914-1921	1939
Manufacturer	Maffei, North British
Axle config	2-6-6-0 (Mogul Mallet)
Gauge	3 ft 6 in (Cape gauge)

Dimensions and Weights
Length	67 ft 5 1/8 in
Wheelbase	32 ft 8 in
Rigid wheelbase	8 ft 4 in
Total wheelbase	58 ft 11 1/2 in
Service weight	188,160 lbs
Adhesive weight	170,576 lbs
Total weight	309,232 lbs
Axle load	30,800 lbs
Water capacity	5,104 us gal
Fuel capacity	22,400 lbs (coal)

Boiler
Grate area	40 sq ft
Firebox area	130 sq ft	133 sq ft
Tube heating area	1,783 sq ft	1,780 sq ft
Evaporative heating area	1,913 sq ft
Superheater area	343 sq ft	350 sq ft
Total heating area	2,256 sq ft	2,263 sq ft

Variant	as built	rebuilt

Power Plant
Driver diameter	42.8 in
Boiler pressure	200 psi
Expansion type	compound
Cylinders	four, HP: 16 1/2 x 24 in and LP: 26 x 24 in

Power
Power source	steam
Estimated power	1,250 hp (932 kW)
Optimal speed	22 mph
Starting effort	37,046 lbf
with start valve	44,455 lbf

Calculated Values
Factor of adhesion	1 : 3.84
Power-to-weight ratio	0.0066 hp/lb
Heating Area Equivalent	3,249 sq ft	3,278 sq ft
Cylinder volume/HAE	1 : 1249.00	1 : 1237.95
Adhesive weight/Total	1 : 1.10
Tractive force/Heating area	1 : 4429.92	1 : 4416.22
Grate area/Heating area	1 : 53.15	1 : 53.25
Firebox/Tube area	1 : 16.35	1 : 16.02
Total/Superheater	1 : 5.58	1 : 5.47
HP/LP cylinders	1 : 2.48

steam locomotive

passenger

freight

Mallet

last changed: 10 2023

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