Lancashire & Yorkshire 0-4-0 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class Class 21 Pug / 0F (Locobase 12252)

Data from J F Gairns, "Locomotives for Special Service on British Railways", Engineering Magazine, Volume 26, No 5 (Februay 1904), p. 711 .

Used for shunting (switching) within the larger marshalling yards.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassClass 21 Pug / 0F
Locobase ID12252
RailroadLancashire & Yorkshire
CountryGreat Britain
Whyte0-4-0ST
Number in Class57
Road Numbers
GaugeStd
Number Built57
BuilderHorwich
Year1891
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 5.75 / 1.75
Engine Wheelbase (ft / m) 5.75 / 1.75
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 5.75 / 1.75
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)47,600 / 21,591
Engine Weight (lbs / kg)47,600 / 21,591
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)47,600 / 21,591
Tender Water Capacity (gals / ML)540 / 2.05
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.80 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)40 / 20
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36.40 / 925
Boiler Pressure (psi / kPa)160 / 8.30
High Pressure Cylinders (dia x stroke) (in / mm)13" x 18" / 330x457
Tractive Effort (lbs / kg)11,366 / 5155.54
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.19
Heating Ability
Tubes (number - dia) (in / mm)104 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.25 / 2.51
Firebox Area (sq ft / m2)43 / 4
Grate Area (sq ft / m2) 7.20 / 0.67
Evaporative Heating Surface (sq ft / m2)433 / 40.24
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)433 / 40.24
Evaporative Heating Surface/Cylinder Volume156.59
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1152
Same as above plus superheater percentage1152
Same as above but substitute firebox area for grate area6880
Power L12275
Power MT210.74

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