Cavan & Leitrim 0-6-4 Locomotives in Ireland


Class Details by Steve Llanso of Sweat House Media

Class King Edward (Locobase 6401)

Data from Flanagan, The Cavan & Leitrim Railway (1968), p 87. See also R M Livesey, "Rolling-Stock on the Principal Irish Narrow-Gauge Railways", Engineering, Volume 94, (2 August 1912), pp. 169-176, table on p. 175. A full description of the C & L is given in Locobase 6400. Works number was 3136 in 1904.

Flanagan explains that the early success of the line, especially in livestock traffic and excursion trains, prompted an order to Stephenson for this tank. The railway paid 1,750 pounds and delivery came rapidly after the order, the locomotive first being steamed on 28 October 1904, not quite four months after the order.

It was an imposing locomotive with nearly the largest grate on an Irish narrow-gauge engine and a great deal of power, being able to haul 24 cattle cars. Alas, according to Flanagan, the design was a dud, "...a white elephant whose capabilities were rarely, if ever, shown to the full." Its relatively long wheelbase repeatedly, if informally, regauged the track. So persistent was this problem that by May 1907, Flanagan reports, "it was decreed that the engine should not be used except in case of absolute necessity, and that even then its use must be reported to the chairman."

Flanagan's account of King Edward's subsequent history shows that no real cure was ever found for this problem and that by 1922 it was essentially "more or less rusticated". No buyer could be found for it and so it repined for decades.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassKing Edward
Locobase ID6401
RailroadCavan & Leitrim
CountryIreland
Whyte0-6-4T
Number in Class1
Road Numbers9
Gauge3'
Number Built1
BuilderRobert Stephenson & Co
Year1904
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.42 / 2.26
Engine Wheelbase (ft / m)18.25 / 5.56
Ratio of driving wheelbase to overall engine wheelbase 0.41
Overall Wheelbase (engine & tender) (ft / m)18.25 / 5.56
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,784 / 25,757
Engine Weight (lbs / kg)82,432 / 37,391
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)840 / 3.18
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.70 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)32 / 16
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)39 / 991
Boiler Pressure (psi / kPa)145 / 1000
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)14,221 / 6450.54
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.99
Heating Ability
Tubes (number - dia) (in / mm)133 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.17 / 3.40
Firebox Area (sq ft / m2)68.75 / 6.39
Grate Area (sq ft / m2)14 / 1.30
Evaporative Heating Surface (sq ft / m2)750 / 69.68
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)750 / 69.68
Evaporative Heating Surface/Cylinder Volume183.35
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2030
Same as above plus superheater percentage2030
Same as above but substitute firebox area for grate area9969
Power L12520
Power MT293.51

All material Copyright © SteamLocomotive.com
Wes Barris