Bowaters Lloyd Pulp & Paper Mills Articulated Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class Monarch (Locobase 6266)

Data from Allan C Baker's article on the Bagnall Articulateds originally published in The Industrial Railway Record (No 16 - December 1967) and archived online at [link] 22 July 2004). Works number was 3024 in 1953.

See Locobase 6265 for a full discussion of the Bagnall articulated design. This particular locomotive served the Sittingbourne works for a time, but was sold off to the Welshpool & Llanfair Light Railway after only infrequent use.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassMonarch
Locobase ID6266
RailroadBowaters Lloyd Pulp & Paper Mills
CountryGreat Britain
Whyte0-4+4-0
Number in Class1
Road Numbers
Gauge2'6"
Number Built1
BuilderWG Bagnall
Year1953
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 3.25 / 0.99
Engine Wheelbase (ft / m)18.25 / 5.56
Ratio of driving wheelbase to overall engine wheelbase 0.18
Overall Wheelbase (engine & tender) (ft / m)18.25 / 5.56
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)63,840 / 28,957
Engine Weight (lbs / kg)63,840 / 28,957
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)600 / 2.27
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)27 / 13.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)24 / 610
Boiler Pressure (psi / kPa)185 / 1280
High Pressure Cylinders (dia x stroke) (in / mm)9" x 12" / 229x305 (4)
Tractive Effort (lbs / kg)12,737 / 5777.41
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.01
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)36 / 3.35
Grate Area (sq ft / m2)11.50 / 1.07
Evaporative Heating Surface (sq ft / m2)432 / 40.15
Superheating Surface (sq ft / m2)70 / 6.51
Combined Heating Surface (sq ft / m2)502 / 46.66
Evaporative Heating Surface/Cylinder Volume244.46
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2128
Same as above plus superheater percentage2425
Same as above but substitute firebox area for grate area7592
Power L15201
Power MT718.44

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