Duke of Sutherland's Railway “Dunrobin” (II)
Great Britain 1895 5 produced
The Dukes of Sutherland operated a 17-mile-long railway in the north of Scotland, which, among other things, connected to mines. The third Duke had already received a small 2-4-0T tank locomotive from Kitson in 1871, which he used for private journeys. When the fourth Duke of Sutherland took office, he wanted a new locomotive.
This now had the wheel arrangement 0-4-4T and was delivered by Sharp, Stewart & Co. in 1895. Since its predecessor's locomotive had already been sold to the Highland Railway, the new one was again given the name “Dunrobin”, after the castle with the same name. It had a spacious cab to accommodate guests, some of whom also came from the royal family.
Technical data
General
- Built
- 1895
- Manufacturers
- Sharp, Stewart & Co.
- Wheel arrangement
- 0-4-4T (Forney)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Wheelbase
- 5.52 m
- Service mass
- 31.8 t
- Rigid wheelbase
- 1.91 m
- Water capacity
- 3,184 l
Boiler
- Grate area
- 1.022 m²
- Firebox surface
- 6.317 m²
- Tube heating surface
- 48.031 m²
- Evaporative heating surface
- 54.348 m²
- Total heating surface
- 54.3 m²
Power plant
- Driver diameter
- 1,372 mm
- Boiler pressure
- 10.3 bar
- Expansion type
- simple expansion
- Cylinders
- two, 330 x 457 mm
Power
- Power source
- steam
- Estimated power
- 164 kW (223 PS)
- Starting effort
- 31.9 kN
Calculated values
- Optimal speed
- 32 km/h
- Power-to-weight ratio
- 5.2 kW/t
- Heating Surface Equivalent
- 85.9 m²
- Cylinder volume/HSE
- 1 : 911.21
- Tractive force/Heating surface
- 1 : 12.28
- Grate area/Heating surface
- 1 : 53.18
- Firebox/Tube surface
- 1 : 7.60
