Welshpool & Llanfair Light Railway 0-6-0 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class The Countess (Locobase 13803)

Data from "Welshpool & Llanfair Light Railway," Railway Magazine, Volume 13, (July 1903), p. 64-68. See also the Railroad Glory Days website article on the WLLR at [link], last accessed 31 January 2012. Works numbers were 3496-3497 in 1902.

"The Earl" and "The Countess" were named for the Earl of Powys and his Countess. The 9-mile (14.5 km) line from Welshpool to Llanfair began construction in May 1901 and completed 9 months later in February 1902. Its first two miles climbed on the average of 150 ft/mile (2.8%).

The RGD summary of the WLLR is hard to beat. "This is rural country, not mountainous like farther west. The gently rolling landscape is dotted with small farms and pasture land. It was in fact agriculture that brought the railway here. Unlike all the other Welsh narrow gauges I visited, the W&L was built not for mining, but to haul agricultural goods and perhaps a few rural citizens to and from the small market town of Welshpool or to the standard gauge connection there with the Cambrian Railways."

When the Great Western Railway took over operation of the W & LLR, God's Wonderful Railway renumbered the 1 & 2 as 822-823.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassThe Countess
Locobase ID13803
RailroadWelshpool & Llanfair Light Railway
CountryGreat Britain
Whyte0-6-0T
Number in Class2
Road Numbers1-2 / 822-823
Gauge2'6"
Number Built2
BuilderBeyer, Peacock
Year1902
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)10 / 3.05
Engine Wheelbase (ft / m)10 / 3.05
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)10 / 3.05
Axle Loading (Maximum Weight per Axle) (lbs / kg)24,080 / 10,923
Weight on Drivers (lbs / kg)43,680 / 19,813
Engine Weight (lbs / kg)43,680 / 19,813
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)43,680 / 19,813
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)24 / 12
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)11.5" x 16" / 292x406
Tractive Effort (lbs / kg)8720 / 3955.33
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.01
Heating Ability
Tubes (number - dia) (in / mm)119 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 7.33 / 2.23
Firebox Area (sq ft / m2)37 / 3.44
Grate Area (sq ft / m2)
Evaporative Heating Surface (sq ft / m2)433 / 40.23
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)433 / 40.23
Evaporative Heating Surface/Cylinder Volume225.11
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation
Same as above plus superheater percentage
Same as above but substitute firebox area for grate area5920
Power L12827
Power MT428.05

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