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The reference for locomotives and railcars

Milwaukee Road class H8

1904 9 produced
White Sulfur Springs & Yellowstone Park Railway No. 99 in 1947 at White Sulphur Springs Taylor Rush collection

In August 1904, Rogers built five relatively large 4-4-0 for the Southern Indiana Railroad. They carried the works numbers 6228 to 6232, had drivers of 68 inches and cylinders of 18 by 26 inches. In August of the following year, four largely identical locomotives were delivered to the Chicago Southern. Their builder was now called ALCO-Rogers and works numbers were 37559 to 37562. One change was that the drivers now only measured 67 inches.

Later the two railroads formed the Chicago, Terre Haute & Southeastern, what in turn was leased by the Milwaukee Road in 1921. The locomotives were originally numbered 206 to 214 and later 900 to 908. Six of the nine locomotives were retired in November 1934, while the others were used by subsidiaries of the Milwaukee Road on branch lines. After three additional renumberings, they became 97 to 99 in 1945. For example, No. 99 shown in the photo was used by the White Sulfur Springs & Yellowstone Park Railway in its last years. This one was scrapped in September 1949, the other two were scrapped in 1947 and 1951.

Technical data

General

Built
1904-1905
Manufacturers
Rogers
Wheel arrangement
4-4-0 (American)
Gauge
1,435 mm (Standard gauge)

Dimensions and weights

Wheelbase
6.96 m
Total wheelbase
15.22 m
Service mass
59.4 t
Adhesion mass
38.8 t
Total mass
110.2 t
Rigid wheelbase
2.44 m
Water capacity
18,927 l
Fuel capacity
9.1 t (coal)

Boiler

Grate area
2.49 m²
Firebox surface
13.75 m²
Tube heating surface
146.88 m²
Evaporative heating surface
160.63 m²
Total heating surface
160.6 m²

Power plant

Driver diameter
1,702 mm
Boiler pressure
12.4 bar
Expansion type
simple expansion
Cylinders
two, 457 x 660 mm

Power

Power source
steam
Estimated power
671 kW (912 PS)
Starting effort
85.6 kN

Calculated values

Factor of adhesion
1 : 4.45
Optimal speed
48 km/h
Power-to-weight ratio
11.3 kW/t
Heating Surface Equivalent
229.4 m²
Cylinder volume/HSE
1 : 945.33
Adhesive weight/Total
1 : 1.53
Tractive force/Heating surface
1 : 11.13
Grate area/Heating surface
1 : 64.51
Firebox/Tube surface
1 : 10.68
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