Norwegian State Railways No. 37 to 39
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