Data from "Locomotives Built by Messrs William Beardmore & Co, Ltd", Locomotive Magazine, Volume XXVI [28] (15 July 1920), pp. 161-162. See also "Beardmore Locomotives", Railway Gazette (UK), Volume XXXVII [37], No 8 (25 August 1922), pp. 258-259. Works numbers were 130-154 in 1920.
As suggested by its class ID, these Belpaire-firebox engines were built along the lines of the standard design of broad-gauge superheated goods locomotives (Locobase 4253). For the Glasgow-based steel, ordnance, and shipbuilding colossus, steam locomotives seemed a logical extension. Beginning in 1920, the company's Dalmuir Works managed to produce about 400 locomotives over the next 10 years.
The two sources cited above show different areas for the superheater elements. LM's figure appears in Locobase's data. Beardmore's measurement of "steam contact", however, appeared as 270 sq ft (25.08 sq m), 31% less.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | HGS |
| Locobase ID | 20789 |
| Railroad | East Indian |
| Country | India |
| Whyte | 2-8-0 |
| Number in Class | 35 |
| Road Numbers | 1520-1554/26729-26763 |
| Gauge | 5'6" |
| Number Built | 35 |
| Builder | Beardmore |
| Year | 1920 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 16 / 4.88 |
| Engine Wheelbase (ft / m) | 25 / 7.62 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.64 |
| Overall Wheelbase (engine & tender) (ft / m) | 50.73 / 15.46 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 35,168 / 15,952 |
| Weight on Drivers (lbs / kg) | 143,172 / 64,942 |
| Engine Weight (lbs / kg) | 163,856 / 74,324 |
| Tender Loaded Weight (lbs / kg) | 103,600 / 46,992 |
| Total Engine and Tender Weight (lbs / kg) | 267,456 / 121,316 |
| Tender Water Capacity (gals / ML) | 4800 / 18.18 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8.25 / 7.50 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 60 / 30 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 56.50 / 1435 |
| Boiler Pressure (psi / kPa) | 160 / 1090 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 22" x 26" / 559x660 |
| Tractive Effort (lbs / kg) | 30,291 / 13739.78 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.73 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 134 - 2.25" / 57 |
| Flues (number - dia) (in / mm) | 26 - 5.25" / 133 |
| Flue/Tube length (ft / m) | 13 / 3.96 |
| Firebox Area (sq ft / m2) | 172 / 15.98 |
| Grate Area (sq ft / m2) | 32 / 2.97 |
| Evaporative Heating Surface (sq ft / m2) | 1770 / 164.44 |
| Superheating Surface (sq ft / m2) | 389 / 36.14 |
| Combined Heating Surface (sq ft / m2) | 2159 / 200.58 |
| Evaporative Heating Surface/Cylinder Volume | 154.73 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5120 |
| Same as above plus superheater percentage | 6042 |
| Same as above but substitute firebox area for grate area | 32,474 |
| Power L1 | 8075 |
| Power MT | 497.37 |