Data from Henley's Encyclopedia of Practical Engineering and Allied Trades: A ... By Joseph Gregory Horner (London: N W Henley, 1907), p 132 and Richard Marsden's LNER Encyclopedia ([], accessed 11 November 2007).
Data from "0-8-2T Superheater Tank Locomotives: Great Northern Ry", Locomotive Magazine, Volume XXIII [23], No 303 (15 November 1917), pp 217-219. See also "The Ivatt R1 0-8-2 Tank Locomotives" in Richard Marsden's LNER Encyclopedia website at [], last accessed 21 May 2019.
Data from"8-coupled Tank Engine for Suburban Traffic: Great Northern Railway", Railway Engineer, Volume 24, No 12 (December 1903), p. 401; and "Heavy Tank Locomotive for the Great Northern", Engineer, Volume 76 (25 December 1903), p. 865. Richard Marsden's LNER Encyclopedia ([], accessed 11 November 2007).
Principal Dimensions by Steve Llanso of Sweat House Media | |||
---|---|---|---|
Class | L1 | L1 - superheated/R1 | L1 / R1 |
Locobase ID | 8890 | 20554 | 2657 |
Railroad | Great Northern | Great Northern | Great Northern |
Country | Great Britain | Great Britain | Great Britain |
Whyte | 0-8-2T | 0-8-2T | 0-8-2T |
Number in Class | 40 | 7 | 1 |
Road Numbers | 117-156 | 136 | 116 |
Gauge | Std | Std | Std |
Number Built | 40 | 7 | 1 |
Builder | Doncaster | Doncaster | Doncaster |
Year | 1904 | 1916 | 1903 |
Valve Gear | Stephenson | Stephenson | Stephenson |
Locomotive Length and Weight | |||
Driver Wheelbase (ft / m) | 17.67 / 5.39 | 17.67 / 5.39 | 17.67 / 5.39 |
Engine Wheelbase (ft / m) | 25.17 / 7.67 | 25.17 / 7.67 | 25.17 / 7.67 |
Ratio of driving wheelbase to overall engine wheelbase | 0.70 | 0.70 | 0.70 |
Overall Wheelbase (engine & tender) (ft / m) | 25.17 / 7.67 | 25.17 / 7.67 | 25.17 / 7.67 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 34,160 / 15,495 | 38,080 / 17,273 | |
Weight on Drivers (lbs / kg) | 130,480 / 59,185 | 135,296 / 61,369 | 147,840 / 67,059 |
Engine Weight (lbs / kg) | 157,360 / 71,377 | 161,728 / 73,359 | 176,960 / 80,268 |
Tender Loaded Weight (lbs / kg) | |||
Total Engine and Tender Weight (lbs / kg) | 157,360 / 71,377 | 161,728 / 73,359 | 176,960 / 80,268 |
Tender Water Capacity (gals / ML) | 1800 / 6.82 | 1800 / 6.82 | 24,000 / 90.91 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 | 3.30 / 3 | 4.40 / 4 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 | 56 / 28 | 62 / 31 |
Geometry Relating to Tractive Effort | |||
Driver Diameter (in / mm) | 54 / 1372 | 56 / 1422 | 55.50 / 1410 |
Boiler Pressure (psi / kPa) | 175 / 12.10 | 170 / 11.70 | 175 / 12.10 |
High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 26" / 457x660 | 19.75" x 26" / 502x660 | 20" x 26" / 508x660 |
Tractive Effort (lbs / kg) | 23,205 / 10525.62 | 26,169 / 11870.07 | 27,874 / 12643.45 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.62 | 5.17 | 5.30 |
Heating Ability | |||
Tubes (number - dia) (in / mm) | 104 - 2" / 51 | 191 - 2" / 51 | |
Flues (number - dia) (in / mm) | 18 - 5.25" / 133 | ||
Flue/Tube length (ft / m) | 11.75 / 3.58 | 13 / 3.96 | 13 / 3.96 |
Firebox Area (sq ft / m2) | 107.70 / 10.01 | 135.50 / 12.59 | 136.74 / 12.73 |
Grate Area (sq ft / m2) | 17.80 / 1.65 | 24.50 / 2.28 | 24.50 / 2.28 |
Evaporative Heating Surface (sq ft / m2) | 1044 / 97.03 | 1163 / 108.05 | 1439 / 133.69 |
Superheating Surface (sq ft / m2) | 254 / 23.60 | ||
Combined Heating Surface (sq ft / m2) | 1044 / 97.03 | 1417 / 131.65 | 1439 / 133.69 |
Evaporative Heating Surface/Cylinder Volume | 136.33 | 126.15 | 152.21 |
Computations Relating to Power Output (More Information) | |||
Robert LeMassena's Power Computation | 3115 | 4165 | 4288 |
Same as above plus superheater percentage | 3115 | 4915 | 4288 |
Same as above but substitute firebox area for grate area | 18,848 | 27,181 | 23,930 |
Power L1 | 3255 | 7102 | 3635 |
Power MT | 219.99 | 462.90 | 216.82 |