loco-info.com - Canadian National class U-1f

Dimensions and Weights
Rigid wheelbase	19 ft
Service weight	365,700 lbs
Adhesive weight	236,950 lbs
Total weight	647,540 lbs
Axle load	59,238 lbs
Water capacity	11,000 us gal
Fuel capacity	5,000 us gal (oil)

Boiler
Grate area	70.2 sq ft
Firebox area	386 sq ft
Tube heating area	3,198 sq ft
Evaporative heating area	3,584 sq ft
Superheater area	1,570 sq ft
Total heating area	5,154 sq ft

Power Plant
Driver diameter	73 in
Boiler pressure	260 psi
Expansion type	simple
Cylinders	two, 24 x 30 in

Power
Power source	steam
Estimated power	3,450 hp (2,573 kW)
Optimal speed	42 mph
Starting effort	52,313 lbf

Calculated Values
Factor of adhesion	1 : 4.53
Power-to-weight ratio	0.0094 hp/lb
Heating Area Equivalent	8,654 sq ft
Cylinder volume/HAE	1 : 553.24
Adhesive weight/Total	1 : 1.54
Tractive force/Heating area	1 : 2281.80
Grate area/Heating area	1 : 67.92
Firebox/Tube area	1 : 12.35
Total/Superheater	1 : 2.28

steam locomotive

passenger

express

freight

last changed: 11 2023

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