London & South Western 0-4-2 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class Jubilee (Locobase 2242)

Data from E L Ahrons, The British Railway Locomotive, 1825-1925 (London: Locomotive Publishing Company, 1927); and from "The History of the London & South Western Ry. Locomotives", The Locomotive Magazine, Volume XIV [14] (15 July 1908), pp. 118-119.

Designed by Adams and introduced in the 50th year of Queen Victoria's reign, hence the name. Nine Elms built 50 and Neilson produced 40 for mixed-traffic work. LM reports that they were used for heavy excursion and troop special services, Central and North Devon passenger trains, and fast goods services from London to the West of England, Southampton, and Weymouth.

Glover (1967) notes the use of inside cylinders, atypical of South Western practice, stemmed from the wheel arrangement in which outside cylinders would have set up too much of a boxing motion. Ahrons notes that the steam chests were under the cylinders in the first 60, inside (toward the centerline) in later engines. Some of the engines had 218 tubes and a total heating surface of 1,248 sq ft (115.94 sq m).

Principal Dimensions by Steve Llanso of Middle Run Media
ClassJubilee
Locobase ID2242
RailroadLondon & South Western
CountryGreat Britain
Whyte0-4-2
Number in Class90
Road Numbers527-556
GaugeStd
Number Built90
Builderseveral
Year1887
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44
Engine Wheelbase (ft / m)16.83 / 5.13
Ratio of driving wheelbase to overall engine wheelbase 0.48
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)64,960 / 29,465
Engine Weight (lbs / kg)94,640 / 42,928
Tender Loaded Weight (lbs / kg)71,680 / 32,514
Total Engine and Tender Weight (lbs / kg)166,320 / 75,442
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)54 / 27
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)73 / 1854
Boiler Pressure (psi / kPa)160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)18" x 26" / 457x660
Tractive Effort (lbs / kg)15,694 / 7118.69
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.14
Heating Ability
Tubes (number - dia) (in / mm)216 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.33
Firebox Area (sq ft / m2)110 / 10.22
Grate Area (sq ft / m2)17 / 1.58
Evaporative Heating Surface (sq ft / m2)1231 / 114.41
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1231 / 114.41
Evaporative Heating Surface/Cylinder Volume160.75
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2720
Same as above plus superheater percentage2720
Same as above but substitute firebox area for grate area17,600
Power L14528
Power MT307.34

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