Data from R M Livesey, "Rolling-Stock on the Principal Irish Narrow-Gauge Railways", Proceedings of the Institute of Mechanical Engineers (London: IME, 1912), pp. 609; reproduced in, Engineering, Volume 94, (2 August 1912), pp. 169-176, table on p. 175. Works numbers were 6103-6104 in 1902.
These little engines -- the other was named Hercules, after a director of the company -- were rated at 325 tons on the flat. Their bulk meant a high axle loadi such that that they operated only on the 60-65-lb (30-32.5 kg/metre) rail between Londonderry and Stranorlar, said RWA Salter in Railway Magazine in Feb 1931 (see []).
They served County Donegal until they were scrapped in 1933.
However, SJ Carse, writing in the Railway Preservation Society of Ireland (RPSI)'s excellent journal 5 Foot Three (appearing on [], visited in November 2002), reveals that the design was a mismatch for requirements from the start. They had the lowest tractive effort of any CR engines and gave a lot of trouble. Put out of service sometime in the 1920s, they were scrapped in 1935.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | Class 3 |
Locobase ID | 2689 |
Railroad | County Donegal |
Country | Ireland |
Whyte | 4-4-4T |
Number in Class | 2 |
Road Numbers | 10-11 |
Gauge | 3' |
Number Built | 2 |
Builder | Neilson, Reid |
Year | 1902 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 7.25 / 2.21 |
Engine Wheelbase (ft / m) | 26.12 / 7.96 |
Ratio of driving wheelbase to overall engine wheelbase | 0.28 |
Overall Wheelbase (engine & tender) (ft / m) | 26.12 / 7.96 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 23,856 / 10,821 |
Weight on Drivers (lbs / kg) | 46,648 / 21,159 |
Engine Weight (lbs / kg) | 86,324 / 39,156 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 1200 / 4.55 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.80 / 3 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 39 / 19.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 48 / 1219 |
Boiler Pressure (psi / kPa) | 150 / 1030 |
High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 20" / 356x508 |
Tractive Effort (lbs / kg) | 10,413 / 4723.26 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.48 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 142 - 1.75" / 44 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 9.83 / 3 |
Firebox Area (sq ft / m2) | 76 / 6.97 |
Grate Area (sq ft / m2) | 11.50 / 1.07 |
Evaporative Heating Surface (sq ft / m2) | 713 / 66.24 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 713 / 66.24 |
Evaporative Heating Surface/Cylinder Volume | 200.09 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 1725 |
Same as above plus superheater percentage | 1725 |
Same as above but substitute firebox area for grate area | 11,400 |
Power L1 | 3681 |
Power MT | 347.93 |