South Eastern & Chatham 0-4-4 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class 710 (Locobase 10169)

Data from "Bogie Tank Locomotive, SE&CR," The Locomotive Magazine, Volume VI (February 1901), p. 21.

Designed by Harry Wainwright, these were put into service on the Metropolitan suburban section. They had exhaust steam condensers that recycled the vapor into the side tanks.


Class H (Locobase 20529)

Data from "Bogie Tank Locomotive, SE&CR," The Locomotive Magazine, Volume VI (February 1901), p. 21; and Wikipedia's "SECR H class" entry at [link]; and the Southern Railway E-Group entry "Wainwright H class 0-4-4T" at [link] , both last accessed 28 March 2019.

Harry Wainwright identified an "urgent need" for a medium-sized passenger tank locomotive in the early years of the 20th Century, says the SEMG's entry. He only had to look at A/A1/A2 class originally built for London, Chatham & Dover beginning in 1875.

The first 64 were completed between 1904 and 1905 with Wainwright adding two more in 1915.

Principal Dimensions by Steve Llanso of Middle Run Media
Class710H
Locobase ID10169 20529
RailroadSouth Eastern & ChathamSouth Eastern & Chatham
CountryGreat BritainGreat Britain
Whyte0-4-4T0-4-4T
Number in Class66
Road Numbers710540+
GaugeStdStd
Number Built66
BuilderSECRAshford
Year19001904
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13
Engine Wheelbase (ft / m)21.83 / 6.65
Ratio of driving wheelbase to overall engine wheelbase 0.32
Overall Wheelbase (engine & tender) (ft / m)21.83 / 6.65
Axle Loading (Maximum Weight per Axle) (lbs / kg)35,840 / 16,25737,632 / 17,070
Weight on Drivers (lbs / kg)70,112 / 31,80275,264 / 34,139
Engine Weight (lbs / kg)115,248 / 52,276121,856 / 55,273
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)115,248 / 52,276121,856 / 55,273
Tender Water Capacity (gals / ML)1320 / 51620 / 6.14
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.80 / 3 1.65 / 1.50
Minimum weight of rail (calculated) (lb/yd / kg/m)58 / 2963 / 31.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)66 / 167666 / 1676
Boiler Pressure (psi / kPa)160 / 1100160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)17.5" x 24" / 445x61018" x 26" / 457x660
Tractive Effort (lbs / kg)15,145 / 6869.6617,359 / 7873.92
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.63 4.34
Heating Ability
Tubes (number - dia) (in / mm)116 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)100.60 / 9.35102.25 / 9.50
Grate Area (sq ft / m2)16.25 / 1.5116.67 / 1.55
Evaporative Heating Surface (sq ft / m2)1072 / 99.631105 / 102.66
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1072 / 99.631105 / 102.66
Evaporative Heating Surface/Cylinder Volume160.45144.30
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation26002667
Same as above plus superheater percentage26002667
Same as above but substitute firebox area for grate area16,09616,360
Power L141493715
Power MT260.92217.64

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