Clogher Valley Railway 0-4-2 Locomotives in Ireland


Class Details by Steve Llanso of Sweat House Media

Class Caledon (Locobase 5080)

Data from [link]. . (July 2002, last accessed 20 October 2011). See also "The Clogher Valley Railway", Locomotive Magazine, Volume 19 (15 December 1913), pp. 277. 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. Works numbers were 3369-3374.

The Clogher Valley was incorporated on 26 May 1884 and opened three years later. It offered 37 track miles (60 km) in County Tyrone between Tynan and Maguiresbridge, both of which had stations on the GNR. Never a big money-maker, the line closed 31 December 1941.

Principal power on the CVR were these six tanks delivered in 1886-1887 After Caledon came Errigal, Blackwater, Fury, Colebrooke, and Erne. The cylinders were inclined on a 1 in 15 angle, possibly to clear the front driving axle. All of the running gear was sheathed by plates suspended from the running board to protect nearby human and animal traffic. The class was rated at 70 tons maximum load on the road's ruling gradient.

Fury was scrapped first in 1929, Colebrooke in 1936 and the other four after the line closed.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassCaledon
Locobase ID5080
RailroadClogher Valley Railway
CountryIreland
Whyte0-4-2T
Number in Class6
Road Numbers1-6
Gauge3'
Number Built6
BuilderSharp, Stewart
Year1886
Valve GearJoy
Locomotive Length and Weight
Driver Wheelbase (ft / m) 4.75 / 1.45
Engine Wheelbase (ft / m)10.33 / 3.15
Ratio of driving wheelbase to overall engine wheelbase 0.46
Overall Wheelbase (engine & tender) (ft / m)10.33
Axle Loading (Maximum Weight per Axle) (lbs / kg)18,368 / 8332
Weight on Drivers (lbs / kg)36,176 / 16,409
Engine Weight (lbs / kg)53,312 / 24,182
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)720 / 2.73
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.10 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)30 / 15
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 914
Boiler Pressure (psi / kPa)140 / 970
High Pressure Cylinders (dia x stroke) (in / mm)13.5" x 18" / 343x457
Tractive Effort (lbs / kg)10,844 / 4918.76
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.34
Heating Ability
Tubes (number - dia) (in / mm)127 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 7.75 / 2.36
Firebox Area (sq ft / m2)48 / 4.46
Grate Area (sq ft / m2)10 / 0.93
Evaporative Heating Surface (sq ft / m2)514 / 47.75
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)514 / 47.75
Evaporative Heating Surface/Cylinder Volume172.36
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1400
Same as above plus superheater percentage1400
Same as above but substitute firebox area for grate area6720
Power L12124
Power MT258.88

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