Ffestiniog Railway No. 5 and 6 “Large England Class”
The No. 5 “Welsh Pony” and No. 6 “Little Giant” were ordered by the Ffestiniog Railway in 1867 when the existing four locomotives were no longer able to meet demand. They were also built by George England and had the same general layout with an additional tender that only carried coal, but were heavier. With their larger drivers and longer wheelbase that was still small at five feet, they ran more steady than the earlier locomotives. They became known as “Large England Class” to distinguish them from the other.
Additionally, they were fitted with a saddle tank from the start. They were overhauled over the years and got new boilers and cabs. No. 6 was withdrawn in 1932, followed by No. 5 in 1939. After decades of deterioration, No. 5 was repainted in 1984. After a second cosmetical restoration in 2013, it was completely overhauled and is in working order again since 2020.
Technical data
General
- Built
- 1867
- Manufacturers
- George England
- Wheel arrangement
- 0-4-0TT (Four-coupled)
- Gauge
- 597 mm
Dimensions and weights
- Wheelbase
- 1.52 m
- Service mass
- 10.2 t
- Adhesion mass
- 10.2 t
- Rigid wheelbase
- 1.52 m
- Axle load
- 5.1 t
- Water capacity
- 1,900 l
Boiler
- Grate area
- 0.372 m²
- Firebox surface
- 2.044 m²
- Tube heating surface
- 32.981 m²
- Evaporative heating surface
- 35.024 m²
- Total heating surface
- 35.0 m²
Power plant
- Driver diameter
- 610 mm
- Boiler pressure
- 10.3 bar
- Expansion type
- simple expansion
- Cylinders
- two, 206 x 305 mm
Power
- Power source
- steam
- Estimated power
- 67 kW (91 PS)
- Starting effort
- 18.7 kN
Calculated values
- Factor of adhesion
- 1 : 5.32
- Optimal speed
- 23 km/h
- Power-to-weight ratio
- 6.6 kW/t
- Heating Surface Equivalent
- 45.2 m²
- Cylinder volume/HSE
- 1 : 450.69
- Adhesive weight/Total
- 1 : 1.00
- Tractive force/Heating surface
- 1 : 11.16
- Grate area/Heating surface
- 1 : 94.15
- Firebox/Tube surface
- 1 : 16.14
