Data from Richard Marsden's LNER Encyclopedia [] . Among the rarest of wheel arrangements must be this tank engine, which was the result of converting a duo of 2-2-2 tender engines. As the dimensions show, this was not a tiny locomotive (the boiler was 11' 9" long), although the weight distribution was about as unbalanced as could be found. Still, the two-engine class persisted into the 1930s as LNER Class X3.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Class 190 / X3 |
| Locobase ID | 3245 |
| Railroad | North Eastern |
| Country | Great Britain |
| Whyte | 2-2-4T |
| Number in Class | 2 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 2 |
| Builder | |
| Year | 1894 |
| Valve Gear | 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) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 31,360 / 14,225 |
| Engine Weight (lbs / kg) | 101,192 / 45,900 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 52 / 26 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 78.50 / 1994 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 22" / 406x559 |
| Tractive Effort (lbs / kg) | 9757 / 4425.71 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.21 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 21 / 1.95 |
| Evaporative Heating Surface (sq ft / m2) | 1006 / 93.49 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1006 / 93.49 |
| Evaporative Heating Surface/Cylinder Volume | 196.50 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3360 |
| Same as above plus superheater percentage | 3360 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |