Data from "The Locomotives of the Great Eastern Railway", The Locomotive, Volume 16 (15 December 1910), p. 261. Road numbers 20 in May 1877, 21-22, 23-25 in June, 7 and 9 in December, 8 in February 1878, 10 in April, and 22 in May.
These were the only engines built at the GER's Stratford Works during William Adams' superintendence. They had a bit more heating surface area than the 50 0-4-4Ts shown in Locobase 16021. The frst five had two plates butt-joined; they were recognized by their dome on the front course. The latter five used a three-plate boiler that put the dome over the center plate. The LM author notes the economical recycling that led to reusing old Gooch-era drivers, suitably cut down, for the leading drivers ahead of the trailing drivers, which had been the leading drivers of Sinclair-designed four-coupled. Bromley's tank engines provided drivers for the second five. They pulled light local passenger trains on the GER's branch lines.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | K9 |
| Locobase ID | 16020 |
| Railroad | Great Eastern (GER) |
| Country | Great Britain |
| Whyte | 0-4-2T |
| Number in Class | 10 |
| Road Numbers | 20-21, 23-25, 7, 9, 8, 10, 22 |
| Gauge | Std |
| Number Built | 10 |
| Builder | Stratford works |
| Year | 1877 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.17 / 2.19 |
| Engine Wheelbase (ft / m) | 14 / 4.27 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.51 |
| Overall Wheelbase (engine & tender) (ft / m) | 14 / 4.27 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 29,708 / 13,475 |
| Weight on Drivers (lbs / kg) | 59,444 / 26,963 |
| Engine Weight (lbs / kg) | 86,380 / 39,181 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 86,380 / 39,181 |
| Tender Water Capacity (gals / ML) | 1020 / 3.86 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 50 / 25 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 58 / 1473 |
| Boiler Pressure (psi / kPa) | 140 / 9.70 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 22" / 381x559 |
| Tractive Effort (lbs / kg) | 10,156 / 4606.69 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.85 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 203 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.41 / 2.87 |
| Firebox Area (sq ft / m2) | 75.43 / 7.01 |
| Grate Area (sq ft / m2) | 12.30 / 1.14 |
| Evaporative Heating Surface (sq ft / m2) | 950 / 88.26 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 950 / 88.26 |
| Evaporative Heating Surface/Cylinder Volume | 211.13 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1722 |
| Same as above plus superheater percentage | 1722 |
| Same as above but substitute firebox area for grate area | 10,560 |
| Power L1 | 3992 |
| Power MT | 296.11 |