Cambrian Railways No. 3 “Milford”
Great Britain 1859 1 produced
No. 3 “Milford” was built by Sharp, Stewart & Co. in 1859 for the Cambrian Railways with the works number 1123. It was actually the second locomotive of this railway since No. 2 “Ruthin” was only delivered by Manning, Wardle & Co. in 1860. It was a saddle tank locomotive with two coupled axles in the front and a single trailing axle. Its main task was local passenger traffic for what it had drivers of four feet and nine inches or 1,448 mm. But in its first years of service, it was also used in the construction of the Cambrian Railway network. It was scrapped in 1895, what was much later than the other early Cambrian Railways locomotives.
Technical data
General
- Built
- 1859
- Manufacturers
- Sharp, Stewart & Co.
- Wheel arrangement
- 0-4-2ST
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Wheelbase
- 4.17 m
- Rigid wheelbase
- 4.17 m
- Water capacity
- 3,184 l
Boiler
- Grate area
- 0.948 m²
- Firebox surface
- 5.537 m²
- Tube heating surface
- 55.825 m²
- Evaporative heating surface
- 61.363 m²
- Total heating surface
- 61.4 m²
Power plant
- Driver diameter
- 1,448 mm
- Boiler pressure
- 8.3 bar
- Expansion type
- simple expansion
- Cylinders
- two, 356 x 508 mm
Power
- Power source
- steam
- Estimated power
- 112 kW (152 PS)
- Starting effort
- 31.2 kN
Calculated values
- Optimal speed
- 23 km/h
- Heating Surface Equivalent
- 89.0 m²
- Cylinder volume/HSE
- 1 : 1,133.15
- Tractive force/Heating surface
- 1 : 10.62
- Grate area/Heating surface
- 1 : 64.73
- Firebox/Tube surface
- 1 : 10.08
