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The reference for locomotives and railcars

Norwegian State Railways No. 37 to 39

Norway 1897 3 produced
No.37 Locomotive Magazine, May 1899

In 1897 and 1898, Baldwin built three small 4-4-0 passenger locomotives for the Drammen Randsfjordbanen in the south of Norway which belonged to the manufacturer's type 8-18C. Works numbers were 15640, 16204 and 16205, while the NSB numbered them 37, 38 and 39. Their outside appearance clearly told who built them, but these Cape gauge locomotives weighed less than 24 tons. The cylinders had a stroke of 20 inches, but a diameter of only twelve inches. Driver diameter was 55 inches or 1.397 mm. The three-axle tender had a fixed axle at the front and a two-axle truck at the rear. Although the Randsfjordbanen was converted to standard gauge in 1909, records say that these locomotives were only retired in the late twenties. This indicates that they were used on another line for the rest of their career.

Technical data

General

Built
1897-1898
Manufacturers
Baldwin
Wheel arrangement
4-4-0 (American)
Gauge
1,067 mm (Cape gauge)

Dimensions and weights

Wheelbase
5.44 m
Total wheelbase
10.36 m
Service mass
21.7 t
Adhesion mass
13.8 t
Total mass
34.9 t
Rigid wheelbase
1.91 m
Axle load
6.9 t
Water capacity
3,785 l
Fuel capacity
1.4 t (coal)

Boiler

Grate area
0.818 m²
Firebox surface
6.782 m²
Tube heating surface
40.32 m²
Evaporative heating surface
47.102 m²
Total heating surface
47.1 m²

Power plant

Driver diameter
1,397 mm
Boiler pressure
11 bar
Expansion type
simple expansion
Cylinders
two, 305 x 508 mm

Power

Power source
steam
Estimated power
134 kW (182 PS)
Starting effort
31.7 kN

Calculated values

Factor of adhesion
1 : 4.26
Optimal speed
26 km/h
Power-to-weight ratio
6.2 kW/t
Heating Surface Equivalent
81.0 m²
Cylinder volume/HSE
1 : 915.09
Adhesive weight/Total
1 : 1.58
Tractive force/Heating surface
1 : 14.05
Grate area/Heating surface
1 : 57.58
Firebox/Tube surface
1 : 5.95
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