Dublin & South Eastern / Dublin, Wicklow & Wexford 2-4-2 Locomotives in Ireland


Class Details by Steve Llanso of Sweat House Media

Class St Aiden (Locobase 10656)

Data from "Railway Notes, Dublin & South Eastern Ry", The Locomotive Magazine, Vol XIV (15 June 1908), p. 55.

All Locobase knows is that this was a small home-built passenger tank engine with a Belpaire firebox.


Class St Patrick (Locobase 10104)

Data from "Four-Coupled Bogie Express Engine for the Dublin, Wicklow & Wexford Railway.," The Locomotive & Railway Carriage & Wagon Review, Vol III (November 1898), p. 165.

This apparently was a one-off tank engine built at the home shops.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassSt AidenSt Patrick
Locobase ID10656 10104
RailroadDublin & South Eastern (DSE)Dublin, Wicklow & Wexford (DSE)
CountryIrelandIreland
Whyte2-4-2T2-4-2T
Number in Class11
Road Numbers27
Gauge5'3"5'3"
Number Built11
BuilderDWW
Year19081898
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.83 / 2.39
Engine Wheelbase (ft / m)20.33 / 6.20
Ratio of driving wheelbase to overall engine wheelbase 0.39
Overall Wheelbase (engine & tender) (ft / m)20.33 / 6.20
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)120,960 / 54,867116,480 / 52,835
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)120,960 / 54,867116,480 / 52,835
Tender Water Capacity (gals / ML)1800 / 6.821800 / 6.82
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)66 / 167666 / 1676
Boiler Pressure (psi / kPa)175 / 12.10160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x61017" x 24" / 432x610
Tractive Effort (lbs / kg)15,632 / 7090.5614,292 / 6482.75
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)171 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.50 / 3.20
Firebox Area (sq ft / m2)128 / 11.90
Grate Area (sq ft / m2)17 / 1.5815 / 1.39
Evaporative Heating Surface (sq ft / m2)958 / 89.03951 / 88.38
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)958 / 89.03951 / 88.38
Evaporative Heating Surface/Cylinder Volume151.94150.83
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation29752400
Same as above plus superheater percentage29752400
Same as above but substitute firebox area for grate area20,480
Power L14441
Power MT

All material Copyright © SteamLocomotive.com
Wes Barris