Skip to content

Navigation

loco-info.com

The reference for locomotives and railcars

Compare locomotives

Add a locomotive

Soo Line classes H-3 and H-21 to H-23

H-23 No. 2719 in September 2007 at Two Harbors, Montana

In 1911 Soo Line and its Wisconsin Central subsidiary began manufacturing a series of Pacifics ranging from the H-3 to the H-23 of 1923. It started with eleven H-3s and ten H-21s, which differed almost only in the boi...

	Soo Line classes H-3 and H-21 to H-23 Remove
Variant	H-23 H-3 H-21 H-22 H-23
Built	1923
Manufacturers	ALCO
Wheel arrangement	2C1
Gauge	1435 mm
Length	25165 mm
Service mass	127496 kg
Top speed
Power
Engine

General

Property	Soo Line classes H-3 and H-21 to H-23 H-23 H-3 H-21 H-22 H-23 Remove
Built	1923
Manufacturers	ALCO
Wheel arrangement	4-6-2 (Pacific)
Gauge	1,435 mm

Dimensions and weights

Property	Soo Line classes H-3 and H-21 to H-23 H-23 H-3 H-21 H-22 H-23 Remove
Length	25.17 m
Length loco	14.21 m
Wheelbase	10.54 m
Total wheelbase	21.67 m
Service mass	127.5 t
Adhesion mass	78.2 t
Total mass	225 t
Rigid wheelbase	4.12 m
Axle load	26.8 t
Water capacity	45,425 l
Fuel capacity	15.9 t (coal)

Boiler

Property	Soo Line classes H-3 and H-21 to H-23 H-23 H-3 H-21 H-22 H-23 Remove
Grate area	4.901 m²
Firebox surface	19.231 m²
Tube heating surface	294.689 m²
Evaporative heating surface	313.92 m²
Superheater surface	78.039 m²
Total heating surface	392.0 m²

Power plant

Property	Soo Line classes H-3 and H-21 to H-23 H-23 H-3 H-21 H-22 H-23 Remove
Driver diameter	1,905 mm
Boiler pressure	13.8 bar
Expansion type	simple expansion
Cylinders	two, 635 x 660 mm

Power

Property	Soo Line classes H-3 and H-21 to H-23 H-23 H-3 H-21 H-22 H-23 Remove
Power source	steam
Estimated power	1,491 kW (2,027 PS)
Starting effort	163.8 kN

Calculated values

Property	Soo Line classes H-3 and H-21 to H-23 H-23 H-3 H-21 H-22 H-23 Remove
Factor of adhesion	1 : 4.68
Optimal speed	56 km/h
Power-to-weight ratio	11.7 kW/t
Heating Surface Equivalent	566.2 m²
Cylinder volume/HSE	1 : 738.82
Adhesive weight/Total	1 : 1.63
Tractive force/Heating surface	1 : 8.73
Grate area/Heating surface	1 : 79.98
Firebox/Tube surface	1 : 15.32
Total/Superheater	1 : 4.02

Auf Deutsch umschalten