Railway Operating Division 4-6-4 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 20089)

Data from 1946 Beyer, Peacock catalogue hosted on Martyn Bane's website at [link] (accessed 21 May 2006). See also "4-6-4 Tank Engines, Netherlands State Railways", Locomotive Magazine, Volume 19 (15 December 1913), pp. 272-273. Works numbers were 5856-5858, 5862-5866, 5868-5873 in 1916.

As reported in Locobase 7510, fourteen of the 40 locomotives ordered for the Staatsspoorwegen in the Netherlands were cancelled in 1914 because of reduced traffic. The British War Department's ROD requisitioned the undelivered set and used them to haul both military ambulance and troop trains and regular civilian passenger trains in France until the end of the war.

Having no particular need for the class, the ROD sold them to France's Chemin de Fer du Nord, which numbered them 3.871 to 3.884. SNCF's creation in 1938 led to their designation as class 232.TB and new numbers 232.TB 1 to 14. Two were retired in 1946, the rest withdrawn in 1950-1951.

Principal Dimensions by Steve Llanso of Middle Run Media
Class1
Locobase ID20089
RailroadRailway Operating Division
CountryGreat Britain
Whyte4-6-4T
Number in Class14
Road Numbers1-12, 14-15
GaugeStd
Number Built14
BuilderBeyer, Peacock
Year1916
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.78 / 4.20
Engine Wheelbase (ft / m)39.21 / 11.95
Ratio of driving wheelbase to overall engine wheelbase 0.35
Overall Wheelbase (engine & tender) (ft / m)39.21 / 11.95
Axle Loading (Maximum Weight per Axle) (lbs / kg)33,620 / 15,250
Weight on Drivers (lbs / kg)100,800 / 45,722
Engine Weight (lbs / kg)208,319 / 94,492
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)208,319 / 94,492
Tender Water Capacity (gals / ML)2402 / 9.10
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)56 / 28
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)72.10 / 1831
Boiler Pressure (psi / kPa)169.70 / 1170
High Pressure Cylinders (dia x stroke) (in / mm)20" x 25.98" / 508x660
Tractive Effort (lbs / kg)20,790 / 9430.20
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.85
Heating Ability
Tubes (number - dia) (in / mm)138 - 1.89" / 48
Flues (number - dia) (in / mm)21 - 5.236" / 133
Flue/Tube length (ft / m)13.29 / 4.05
Firebox Area (sq ft / m2)143.16 / 13.30
Grate Area (sq ft / m2)25.83 / 2.40
Evaporative Heating Surface (sq ft / m2)1419 / 131.80
Superheating Surface (sq ft / m2)331 / 30.75
Combined Heating Surface (sq ft / m2)1750 / 162.55
Evaporative Heating Surface/Cylinder Volume150.21
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4383
Same as above plus superheater percentage5216
Same as above but substitute firebox area for grate area28,910
Power L111,039
Power MT724.31

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