Data from [] (first accessed 17 June 2003, most recently accessed at [
], 24 August 2017); and "Standard Goods Engine and Tender for the Buenos Ayres [sic] Great Southernl Railway", Vulcan Foundry Locomotive Catalogue, No. 51, found on Flicker's Historical Locomotive Images website at [
]. See also the Indian Railways Fan Club website at[
], last accessed 8 August 2021. (Many thanks to Jorge Cerezo Toledo for his 26 June 2021 email containing links to several sites including the Vulcan Catalogue referred to above.) Vulcan works numbers were 4146-4157 in 1928.
Data from [], a reprint of the Vulcan magazine for Winter 1949, which describes Vulcan's delivery of 44 of these Mikados.
Principal Dimensions by Steve Llanso of Sweat House Media | ||
---|---|---|
Class | IRS/XE | IRS/YD |
Locobase ID | 4274 | 4275 |
Railroad | Indian Railway | Indian Railway |
Country | India | India |
Whyte | 2-8-2 | 2-8-2 |
Number in Class | 93 | 24 |
Road Numbers | ||
Gauge | 5'6" | Metre |
Number Built | 93 | 24 |
Builder | several | several |
Year | 1928 | 1949 |
Valve Gear | Walschaert | Walschaert |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 17.25 / 5.26 | 13.42 / 4.09 |
Engine Wheelbase (ft / m) | 36.42 / 11.10 | 27.75 / 8.46 |
Ratio of driving wheelbase to overall engine wheelbase | 0.47 | 0.48 |
Overall Wheelbase (engine & tender) (ft / m) | 69 / 21.03 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 49,604 / 22,500 | |
Weight on Drivers (lbs / kg) | 200,038 / 90,736 | 88,900 / 40,324 |
Engine Weight (lbs / kg) | 265,657 / 120,500 | 126,784 / 57,508 |
Tender Loaded Weight (lbs / kg) | 171,960 / 78,000 | 87,836 / 39,842 |
Total Engine and Tender Weight (lbs / kg) | 437,617 / 198,500 | 214,620 / 97,350 |
Tender Water Capacity (gals / ML) | 7200 / 27.27 | 3600 / 13.64 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 15.40 / 14 | 9 / 8 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 83 / 41.50 | 37 / 18.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 61.50 / 1562 | 48 / 1219 |
Boiler Pressure (psi / kPa) | 210 / 14.50 | 180 / 12.40 |
High Pressure Cylinders (dia x stroke) (in / mm) | 23.5" x 30" / 597x762 | 17" x 24" / 432x610 |
Tractive Effort (lbs / kg) | 48,086 / 21811.47 | 22,109 / 10028.49 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.16 | 4.02 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 163 - 2.25" / 57 | 92 - 2.25" / 57 |
Flues (number - dia) (in / mm) | 36 - 5.5" / 140 | 21 - 5.25" / 133 |
Flue/Tube length (ft / m) | 18.50 / 5.64 | |
Firebox Area (sq ft / m2) | 286 / 26.57 | 147 / 13.66 |
Grate Area (sq ft / m2) | 60 / 5.57 | 26 / 2.42 |
Evaporative Heating Surface (sq ft / m2) | 3014 / 280.01 | 1395 / 129.65 |
Superheating Surface (sq ft / m2) | 763 / 70.88 | 310 / 28.81 |
Combined Heating Surface (sq ft / m2) | 3777 / 350.89 | 1705 / 158.46 |
Evaporative Heating Surface/Cylinder Volume | 200.13 | 221.25 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 12,600 | 4680 |
Same as above plus superheater percentage | 15,120 | 5522 |
Same as above but substitute firebox area for grate area | 72,072 | 31,223 |
Power L1 | 16,166 | 11,237 |
Power MT | 712.66 | 1114.66 |