Data from Kerr, Stuart & Company's own web page at []; and A R Bennett, "Locomotives of the Little Orme Quarry, Llandudno", Locomotive Magazine, Volume XXIII [23] (15 September 1917), p. 185-186. Works numbers included 1257 in 1914.
Principal Dimensions by Steve Llanso of Sweat House Media | |
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Class | Garth |
Locobase ID | 4877 |
Railroad | Little Orme Quarry |
Country | Great Britain |
Whyte | 0-4-2ST |
Number in Class | 2 |
Road Numbers | |
Gauge | 3'6" |
Number Built | 2 |
Builder | Kerr, Stuart & Co |
Year | 1914 |
Valve Gear | |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 3.75 / 1.14 |
Engine Wheelbase (ft / m) | 9 |
Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
Overall Wheelbase (engine & tender) (ft / m) | 9 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | |
Engine Weight (lbs / kg) | 28,560 / 12,955 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | 28,560 / 12,955 |
Tender Water Capacity (gals / ML) | 324 / 1.23 |
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) | 30 / 762 |
Boiler Pressure (psi / kPa) | 160 / 11 |
High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 15" / 229x381 |
Tractive Effort (lbs / kg) | 5508 / 2498.39 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
Heating Ability | |
Tubes (number - dia) (in / mm) | 70 - 1.75" / 44 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | |
Firebox Area (sq ft / m2) | 34.40 / 3.20 |
Grate Area (sq ft / m2) | 5.42 / 0.50 |
Evaporative Heating Surface (sq ft / m2) | 252 / 23.42 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 252 / 23.42 |
Evaporative Heating Surface/Cylinder Volume | 228.16 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 867 |
Same as above plus superheater percentage | 867 |
Same as above but substitute firebox area for grate area | 5504 |
Power L1 | 3071 |
Power MT |