The reference for locomotives and railcars
Camden & Amboy Railroad “John Bull”
United States | 1831 | only one produced
“John Bull” after installing the leading truck, but still without the driver's cab
“John Bull” after installing the leading truck, but still without the driver's cab
Library of Congress
Variantas builtrebuilt
ManufacturerRobert Stephenson & Co.
Axle config0-4-0 (Four-coupled) 4-2-0 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase4 ft 11 in
Fixed wheelbase4 ft 11 in
Service weight20,000 lbs
Fuel capacitywood
Power sourcesteam
Estimated power50 hp (37 kW)
Optimal speed31 mph
Starting effort1,020 lbf
Power Plant
Driver diameter54 in
Boiler pressure40 psi
Expansion typesimple
Cylinderstwo, 9 x 20 in
Grate area10.1 sq ft
Firebox area34.8 sq ft
Tube heating area262.2 sq ft
Evaporative heating area297 sq ft
Total heating area297 sq ft
Calculated Values
steam locomotive
last changed: 10 2023

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