Data from "4-2-2 Locomotive, Shanghai-Nanking Railway", Locomotive Magazine, Volume 15 (15 August 1910), p. 159-160.
Showing even taller drivers than its predecessor 4-4-0s, this "bogie single" had the largest boiler ever put on a single built in Britain. "From all accounts," says Nock (RWC III, pl 109),"these engines did very well, running freely and economically." They appear to have had a virtually identical Belpaire boiler and motion to those of the three classes delivered just a few years before, but they were painted bright yellow instead of the more typical green.
Several articles in contemporary journals noted with pride that the first of the four locomotives was ready for testing in steam within 47 days of the order with others only days behind.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | D |
| Locobase ID | 2665 |
| Railroad | Shanghai-Nanking |
| Country | China |
| Whyte | 4-2-2 |
| Number in Class | 4 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 4 |
| Builder | North British |
| Year | 1910 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 25.17 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 48.75 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 125,552 |
| Tender Loaded Weight (lbs / kg) | 95,536 |
| Total Engine and Tender Weight (lbs / kg) | 221,088 |
| Tender Water Capacity (gals / ML) | 4200 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 7.70 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 84 / 2134 |
| Boiler Pressure (psi / kPa) | 184.20 / 1270 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 26" / 457x660 |
| Tractive Effort (lbs / kg) | 15,702 / 7122.32 |
| 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) | 13.25 |
| Firebox Area (sq ft / m2) | 182.61 |
| Grate Area (sq ft / m2) | 28 / 2.60 |
| Evaporative Heating Surface (sq ft / m2) | 1650 / 153.35 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1650 / 153.35 |
| Evaporative Heating Surface/Cylinder Volume | 215.47 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5158 |
| Same as above plus superheater percentage | 5158 |
| Same as above but substitute firebox area for grate area | 33,637 |
| Power L1 | 8631 |
| Power MT | |