Data from [], Steamindex's summary of Great Northern locomotive practice. See also George Frederick Bird, The Locomotives of the Great Northern Railway 1847-1910 (London: Locomotive Publishing Company, 1910), p. 44-45.
Principal Dimensions by Steve Llanso of Sweat House Media | |
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Class | 470 (Marquis) |
Locobase ID | 9662 |
Railroad | West Yorkshire (GNR) |
Country | Great Britain |
Whyte | 0-6-0T |
Number in Class | 2 |
Road Numbers | 470-471 |
Gauge | Std |
Number Built | 2 |
Builder | Manning Wardle |
Year | 1867 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 15.25 / 4.65 |
Engine Wheelbase (ft / m) | 15.25 / 4.65 |
Ratio of driving wheelbase to overall engine wheelbase | 1 |
Overall Wheelbase (engine & tender) (ft / m) | 15.25 / 4.65 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 60,480 / 27,433 |
Engine Weight (lbs / kg) | 60,480 / 27,433 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | 60,480 / 27,433 |
Tender Water Capacity (gals / ML) | 1000 / 3.79 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 50 / 1270 |
Boiler Pressure (psi / kPa) | 160 / 11 |
High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 22" / 381x559 |
Tractive Effort (lbs / kg) | 13,464 / 6107.17 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.49 |
Heating Ability | |
Tubes (number - dia) (in / mm) | |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | |
Firebox Area (sq ft / m2) | |
Grate Area (sq ft / m2) | 10.75 / 1 |
Evaporative Heating Surface (sq ft / m2) | 783 / 72.77 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 783 / 72.77 |
Evaporative Heating Surface/Cylinder Volume | 174.01 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 1720 |
Same as above plus superheater percentage | 1720 |
Same as above but substitute firebox area for grate area | |
Power L1 | |
Power MT |