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Pennsylvania class I

After Baldwin's first Consolidation locomotives were not well received by American railroads, this wheel arrangement had a breakthrough in 1875 when the PRR made it its standard freight locomotive. It started with cla...

Pennsylvania class IRemove
Variant Standard
Built ab 1875
Manufacturers Altoona
Wheel arrangement 1D
Gauge 1257 mm
Length 17796 mm
Service mass 42048 kg
Top speed
Power
Engine

General

Property Pennsylvania class I
Standard
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Built ab 1875
Manufacturers Altoona
Wheel arrangement 2-8-0 (Consolidation)
Gauge 1,257 mm

Dimensions and weights

Property Pennsylvania class I
Standard
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Length 17.80 m
Wheelbase 6.73 m
Total wheelbase 14.89 m
Empty mass 38.6 t
Service mass 42 t
Adhesion mass 36.5 t
Total mass 72.7 t
Rigid wheelbase 4.17 m
Axle load 10.1 t
Water capacity 11,356 l
Fuel capacity 5.4 t (coal)

Boiler

Property Pennsylvania class I
Standard
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Grate area 2.137 m²
Firebox surface 8.547 m²
Tube heating surface 108.325 m²
Evaporative heating surface 116.872 m²
Total heating surface 116.9 m²

Power plant

Property Pennsylvania class I
Standard
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Driver diameter 1,270 mm
Boiler pressure 8.6 bar
Expansion type simple expansion
Cylinders two, 508 x 610 mm

Power

Property Pennsylvania class I
Standard
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Power source steam
Estimated power 354 kW (481 PS)
Starting effort 90.7 kN

Calculated values

Property Pennsylvania class I
Standard
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Factor of adhesion 1 : 3.95
Optimal speed 24 km/h
Power-to-weight ratio 8.4 kW/t
Heating Surface Equivalent 159.6 m²
Cylinder volume/HSE 1 : 1,548.25
Adhesive weight/Total 1 : 1.15
Tractive force/Heating surface 1 : 16.22
Grate area/Heating surface 1 : 54.69
Firebox/Tube surface 1 : 12.67
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