The reference for locomotives and railcars


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Wabash classes F-4 and F-5
originally class I
United States | 1899 | 38 produced
No. 571 in August 1939 in Decatur, Illinois
No. 571 in August 1939 in Decatur, Illinois
Paul W. Prescott / collection Taylor Rush

The Wabash Railroad had a total of 38 Moguls built in 1899, which came from three manufacturers and were initially classed as class I. 18 locomotives were built by the Richmond Locomotive Works and Baldwin and had a large firebox for their time and a relatively small boiler. 15 other locomotives came from the Rhode Island Locomotive Works and had a larger boiler. All of these simple-expansion locomotives were later classified as F-4. Also built in Rhode Island and Richmond were five two-cylinder compound locomotives which later became the class F-5.

VariantF-4 Richmond, BaldwinF-4 Rhode IslandF-5
ManufacturerRichmond, BaldwinRhode IslandRhode Island, Richmond
Axle config2-6-0 (Mogul) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase22 ft 4 in22 ft 7 in
Fixed wheelbase14 ft
Total wheelbase48 ft 6 in48 ft 8 in
Service weight123,525 lbs128,000 lbs123,525 lbs
Adhesive weight105,525 lbs
Total weight219,825 lbs224,300 lbs219,825 lbs
Axle load37,590 lbs
Water capacity4,500 us gal
Fuel capacity20,000 lbs (coal)
Power sourcesteam
Estimated power900 hp (671 kW)910 hp (679 kW)940 hp (701 kW)
Optimal speed23 mph27 mph
Starting effort25,230 lbf22,147 lbf
with start valve26,576 lbf
Power Plant
Driver diameter63 in
Boiler pressure185 psi195 psi
Expansion typesimplecompound
Cylinderstwo, 19 x 28 intwo, HP: 20 1/2 x 28 in
and LP: 32 1/2 x 28 in
Grate area32 sq ft31.2 sq ft32 sq ft
Firebox area154 sq ft153.2 sq ft164 sq ft
Tube heating area1,453 sq ft1,563.8 sq ft1,443 sq ft
Evaporative heating area1,607 sq ft1,717 sq ft1,607 sq ft
Total heating area1,607 sq ft1,717 sq ft1,607 sq ft
Calculated Values
steam locomotive
last changed: 04/2023

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