Data from [] (30 June 2003). See also Leslie S Robertson, Secretary, Report of the Locomotive Committee on Standard Locomotives for Indian Railways (London: Crosby Lockwood & Son, 2nd Ed, November 1905). See also Cyril Hitchcock, "The Standardisation of Locomotives in India, 1910", Engineer, Volume 110 (28 October 1910), pp. 475; The Engineer's editors presented an emphatic dismissal of the notion of standarisation of types (e.g.: "Standard Goods", "Atlantic Passenger") in the same issue at p. 468. "LS"'s rebuttal appeared in the 11 November 1910 Engineer at p. 511.
Data from "The Work of the British Engineering Standards Association as Applied to Locomotives and Rolling Stock: The Standardization of Locomotives for Indian Railways", Locomotive Magazine, Volume XXV [25] (15 August 1919), pp. 120-123.
Locobase 4255 included a sharply disparaging 1910 comment from "LS" concerning SP 4-4-0's feeble design and performance. In the same year, the British Engineering Standards Association concluded that heavier rail and more substantial permanent ways allowed the installation of a larger boiler and firebox. The differences provided more reserve in See the 4-6-0 HP (Locobase 4241) for full description of the BESA intention and varying views of its utility.
Principal Dimensions by Steve Llanso of Sweat House Media | ||
---|---|---|
Class | BESA/SP | BESA/SP (1910) |
Locobase ID | 4255 | 20736 |
Railroad | ||
Country | India | India |
Whyte | 4-4-0 | 4-4-0 |
Number in Class | ||
Road Numbers | ||
Gauge | 5'6" | 5'6" |
Number Built | ||
Builder | ||
Year | 1903 | 1910 |
Valve Gear | Stephenson | Stephenson |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 9.50 / 2.90 | 9.50 / 2.90 |
Engine Wheelbase (ft / m) | 22.92 / 6.99 | 22.92 / 6.99 |
Ratio of driving wheelbase to overall engine wheelbase | 0.41 | 0.41 |
Overall Wheelbase (engine & tender) (ft / m) | ||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 37,520 / 17,019 | |
Weight on Drivers (lbs / kg) | 76,160 / 34,546 | 78,400 / 35,562 |
Engine Weight (lbs / kg) | 116,480 / 52,835 | 122,080 / 55,375 |
Tender Loaded Weight (lbs / kg) | 90,272 | 90,272 / 40,947 |
Total Engine and Tender Weight (lbs / kg) | 206,752 / 52,835 | 212,352 / 96,322 |
Tender Water Capacity (gals / ML) | 3600 | 3600 / 13.64 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8.30 | 8.30 / 8 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 63 / 31.50 | 65 / 32.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 74 / 1880 | 74 / 1880 |
Boiler Pressure (psi / kPa) | 180 / 12.40 | 180 / 12.40 |
High Pressure Cylinders (dia x stroke) (in / mm) | 18.5" x 26" / 470x660 | 18.5" x 26" / 470x660 |
Tractive Effort (lbs / kg) | 18,398 / 8345.20 | 18,398 / 8345.20 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.14 | 4.26 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 236 - 1.75" / 0 | 279 - 1.75" / 44 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 11.37 | 11.37 / 3.47 |
Firebox Area (sq ft / m2) | 128 / 11.90 | 150 / 13.94 |
Grate Area (sq ft / m2) | 25.30 / 2.35 | 27 / 2.51 |
Evaporative Heating Surface (sq ft / m2) | 1358 / 126.21 | 1603 / 148.92 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 1358 / 126.21 | 1603 / 148.92 |
Evaporative Heating Surface/Cylinder Volume | 167.88 | 198.17 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 4554 | 4860 |
Same as above plus superheater percentage | 4554 | 4860 |
Same as above but substitute firebox area for grate area | 23,040 | 27,000 |
Power L1 | 5483 | 6458 |
Power MT | 317.44 | 363.20 |