Shropshire & Montgomeryshire No. 5 and 6
The only locomotives ordered new by the Shrophire & Montgomeryshire Railway were two 0-6-2T designed by H.F. Stephens. They were built in 1911 by Hawthorn, Leslie & Co. and were run as No. 5 “Pyramus” and No. 6 “Thisbe”, named after an antique saga. These locomotives weighed less than 40 tons and had drivers of three and a half feet. They had outside cylinders and inside Stephenson valve gear, and had combined steam and vacuum brakes.
As early as 1916, both were sold to the government and their numbers and names were re-used for two ex LSWR 0-6-0 class 282 “Ilfracombe Goods” locomotives. No. 5 came to the Cannock Chase Military Railway and served there until 1921, when it was sold for industrial use. No. 6 came to the Woolmer Instructional Military Railway and was in service until 1931.
Technical data
General
- Built
- 1911
- Manufacturers
- Hawthorn, Leslie & Co.
- Wheel arrangement
- 0-6-2T (Webb)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Wheelbase
- 4.72 m
- Service mass
- 36.6 t
- Water capacity
- 5,455 l
- Fuel capacity
- 2 t (coal)
Boiler
- Grate area
- 1.115 m²
- Evaporative heating surface
- 67.262 m²
- Total heating surface
- 67.3 m²
Power plant
- Driver diameter
- 1,067 mm
- Boiler pressure
- 11.7 bar
- Expansion type
- simple expansion
- Cylinders
- two, 356 x 559 mm
Power
- Power source
- steam
- Estimated power
- 224 kW (305 PS)
- Starting effort
- 66.0 kN
Calculated values
- Optimal speed
- 21 km/h
- Power-to-weight ratio
- 6.1 kW/t
- Tractive force/Heating surface
- 1 : 20.49
- Grate area/Heating surface
- 1 : 60.32