Data from "Liskeard & Looe Ry," The Locomotive Magazine, Vol XIII (15 October 1907), pp. 184.
This was the last of the LLR's purchases before it was merged into the Great Western in 1909. (The LLR had taken over the operation of the mineral line Looe & Caradon in 1895.) Lady Margaret was a passenger engine and ran between the two named towns. By 1907, the total rail mileage over which the LM ran was 23. The LM had a average-sized boiler for the work it was called to do, but its firebox had more heating surface than usual.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | Lady Margaret |
Locobase ID | 10627 |
Railroad | Liskeard & Looe |
Country | Great Britain |
Whyte | 2-4-0T |
Number in Class | 1 |
Road Numbers | |
Gauge | Std |
Number Built | 1 |
Builder | Andrew Barclay |
Year | 1904 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 18.37 / 5.60 |
Engine Wheelbase (ft / m) | 18.37 / 5.60 |
Ratio of driving wheelbase to overall engine wheelbase | 1 |
Overall Wheelbase (engine & tender) (ft / m) | 41.17 / 12.55 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | |
Engine Weight (lbs / kg) | 62,720 / 28,449 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 672 / 2.55 |
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) | 160 / 1100 |
High Pressure Cylinders (dia x stroke) (in / mm) | 14.5" x 22" / 368x559 |
Tractive Effort (lbs / kg) | 13,106 / 5944.79 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
Heating Ability | |
Tubes (number - dia) (in / mm) | |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | |
Firebox Area (sq ft / m2) | 68.50 / 6.37 |
Grate Area (sq ft / m2) | 11.60 / 1.08 |
Evaporative Heating Surface (sq ft / m2) | 651 / 60.50 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 651 / 60.50 |
Evaporative Heating Surface/Cylinder Volume | 154.83 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 1856 |
Same as above plus superheater percentage | 1856 |
Same as above but substitute firebox area for grate area | 10,960 |
Power L1 | 3024 |
Power MT |