Dublin & Drogheda 2-2-2 Locomotives in Ireland

Class Details by Steve Llanso of Sweat House Media

Class Victoria (Locobase 10457)

Data from "The First Locomotive Built in Ireland", The Locomotive Magazine, (15 August 1904), p.136.

Not until 1845 did someone try to build a locomotive in Ireland - this was the first. Designers Greendon and Mackay crafted an engine with an enormous dome well forward, just behind the stack. A high running board cleared both auxiliary wheels and provided only a slender slice of slotted splasher on the drivers. Naturally the footboard was utterly unprotected.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID10457
RailroadDublin & Drogheda
Number in Class1
Road Numbers
Number Built1
BuilderDrogheda Ironworks
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)11 / 3.35
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)22.08 / 6.73
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)100 / 6.90
High Pressure Cylinders (dia x stroke) (in / mm)9" x 12" / 229x305
Tractive Effort (lbs / kg)1721 / 780.63
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)80 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.50 / 2.59
Firebox Area (sq ft / m2)39 / 3.62
Grate Area (sq ft / m2) 6.20 / 0.58
Evaporative Heating Surface (sq ft / m2)351 / 32.61
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)351 / 32.61
Evaporative Heating Surface/Cylinder Volume397.25
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation620
Same as above plus superheater percentage620
Same as above but substitute firebox area for grate area3900
Power L14944
Power MT

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