Data from "Recent English Locomotives, Compound and Non-Compound", Railway Age and Railway Review, Volume 18 (20 August 1886), pp. 576-577.
This simple-expansion locomotive was delivered by Dubs at the same time as a Webb compound began trials on the O&R. Tests in January 1886 showed that this engine had run 1,770 miles and consumed 47.27 lb of coal per mile (13.32 kg/km). The compound had run farther--2,448 miles--and averaged 37.24 lb/mile (10.49 kg/km), thus saving 10.03 lb/mile (2.83 kg/km).
"Taking the cost of coal per net ton at $5," the RA&RR report continued," the saving per engine per annum would be $734, a sum that would probably equal the extra first cost of the compound engine."
Data from "Recent English Locomotives, Compound and Non-Compound", Railway Age and Railway Review, Volume 18 (20 August 1886), pp. 576-577.
Built to the same dimensions as the simple-expansion engine shown in Locobase 20571, this trio tested the claims that a Webb compound would offer better fuel economy. Tests in January 1886 showed that three of the compounds had run-2,448 miles (3,942 km) and averaged 37.24 lb/mile (10.49 kg/km) while the non-compound had amassed 1,770 miles (2,850 km) and consumed 47.27 lb of coal per mile (13.32 kg/km). The compound showed a saving of 10.03 lb/mile (2.83 kg/km).
"Taking the cost of coal per net ton at $5," the RA&RR report continued," the saving per engine per annum would be $734, a sum that would probably equal the extra first cost of the compound engine."
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | unknown | unknown |
| Locobase ID | 20571 | 20572 |
| Railroad | Oudh & Rohilkhand | Oudh & Rohilkhand |
| Country | India | India |
| Whyte | 2-4-0 | 2-4-0 |
| Number in Class | 3 | |
| Road Numbers | ||
| Gauge | 5'6" | 5'6" |
| Number Built | 10 | |
| Builder | Dnbs & Co | Dnbs & Co |
| Year | 1885 | 1885 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | ||
| Engine Wheelbase (ft / m) | ||
| Ratio of driving wheelbase to overall engine wheelbase | ||
| Overall Wheelbase (engine & tender) (ft / m) | 34.75 / 10.59 | 34.75 / 10.59 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | ||
| Engine Weight (lbs / kg) | 78,176 / 35,460 | 84,200 / 38,193 |
| Tender Loaded Weight (lbs / kg) | 47,800 / 21,682 | |
| Total Engine and Tender Weight (lbs / kg) | 132,000 / 59,875 | |
| Tender Water Capacity (gals / ML) | 1440 / 5.45 | 1440 / 5.45 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
| Minimum weight of rail (calculated) (lb/yd / kg/m) | ||
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 72 / 1829 | 72 / 1829 |
| Boiler Pressure (psi / kPa) | 120 / 830 | 120 / 830 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 | 12" x 24" / 305x610 |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 24" x 24" / 610x610 (1) | |
| Tractive Effort (lbs / kg) | 9826 / 4457.00 | 5875 / 2664.86 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | ||
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | ||
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | ||
| Firebox Area (sq ft / m2) | 120.20 / 11.17 | 120.20 / 11.17 |
| Grate Area (sq ft / m2) | 15.13 / 1.41 | 15.13 / 1.41 |
| Evaporative Heating Surface (sq ft / m2) | 1032 / 95.88 | 1032 / 95.88 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 1032 / 95.88 | 1032 / 95.88 |
| Evaporative Heating Surface/Cylinder Volume | 163.68 | 328.50 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 1816 | 1816 |
| Same as above plus superheater percentage | 1816 | 1816 |
| Same as above but substitute firebox area for grate area | 14,424 | 14,424 |
| Power L1 | 3730 | 3743 |
| Power MT | ||