Skip to content

Navigation

loco-info.com

The reference for locomotives and railcars

Compare locomotives

Add a locomotive

Erie classes S-1 to S-4

S-4 No. 3397 in August 1936

The Erie was the American railroad that ordered the greatest number of 2-8-4 “Berkshire” locomotives. These 105 locomotives were not only delivered by all three major manufacturers, but also had the biggest heating su...

	Erie classes S-1 to S-4 Remove
Variant	S-3 S-1 S-2 S-3 S-4
Built	1928
Manufacturers	Baldwin
Wheel arrangement	1D2
Gauge	1435 mm
Length
Service mass	207519 kg
Top speed
Power
Engine

General

Property	Erie classes S-1 to S-4 S-3 S-1 S-2 S-3 S-4 Remove
Built	1928
Manufacturers	Baldwin
Wheel arrangement	2-8-4 (Berkshire)
Gauge	1,435 mm

Dimensions and weights

Property	Erie classes S-1 to S-4 S-3 S-1 S-2 S-3 S-4 Remove
Wheelbase	13.41 m
Total wheelbase	27.92 m
Service mass	207.5 t
Adhesion mass	129.1 t
Total mass	375.6 t
Rigid wheelbase	5.56 m
Axle load	32.5 t
Water capacity	78,547 l
Fuel capacity	24.5 t (coal)

Boiler

Property	Erie classes S-1 to S-4 S-3 S-1 S-2 S-3 S-4 Remove
Grate area	9.29 m²
Firebox surface	40.599 m²
Tube heating surface	488.113 m²
Evaporative heating surface	528.712 m²
Superheater surface	230.4 m²
Total heating surface	759.1 m²

Power plant

Property	Erie classes S-1 to S-4 S-3 S-1 S-2 S-3 S-4 Remove
Driver diameter	1,778 mm
Boiler pressure	15.5 bar
Expansion type	simple expansion
Cylinders	two, 724 x 813 mm

Power

Property	Erie classes S-1 to S-4 S-3 S-1 S-2 S-3 S-4 Remove
Power source	steam
Estimated power	3,579 kW (4,866 PS)
Starting effort	315.9 kN

Calculated values

Property	Erie classes S-1 to S-4 S-3 S-1 S-2 S-3 S-4 Remove
Factor of adhesion	1 : 4.01
Optimal speed	69 km/h
Power-to-weight ratio	17.2 kW/t
Heating Surface Equivalent	1,192.5 m²
Cylinder volume/HSE	1 : 561.05
Adhesive weight/Total	1 : 1.61
Tractive force/Heating surface	1 : 8.69
Grate area/Heating surface	1 : 81.71
Firebox/Tube surface	1 : 12.02
Total/Superheater	1 : 2.29

Auf Deutsch umschalten