The reference for locomotives and railcars
Canadian Pacific class T4a
Canada | 1931 | only one produced
ManufacturerAngus Shops
Axle config2-10-4 (Texas) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length98 ft 9 1/16 in
Service weight495,040 lbs
Total weight796,320 lbs
Water capacity12,000 us gal
Fuel capacity4,100 lbs (oil)
Power sourcesteam
Estimated power5,000 hp (3,729 kW)
Optimal speed32 mph
Starting effort99,145 lbf
with start valve118,974 lbf
Power Plant
Driver diameter63 in
Boiler pressure870 psi
Expansion typecompound
Cylindersthree, HP: 15 1/2 x 28 in
and LP: 24 x 30 in
Grate area77 sq ft
Firebox area520 sq ft
Tube heating area3,746 sq ft
Evaporative heating area4,266 sq ft
Superheater area753.5 sq ft
Total heating area5,019.5 sq ft
Calculated Values
steam locomotive
high pressure
last changed: 08 2023

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