Wirral Railway 0-6-4 Locomotives in Great_Britain
Class Details by Steve Llanso of Sweat House Media
Class 12 (Locobase 6474)
Data from [
] (accessed 8 April 2005).
These were the Wirral's largest locomotives. Fitted with Belpaire fireboxes and running at a relatively high boiler pressure, they generated the most power. But their boiler was relatively small and they likely served primarily as pushers. They were retired soon after the LMS took over the Wirral.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 12 |
| Locobase ID | 6474 |
| Railroad | Wirral Railway |
| Country | Great Britain |
| Whyte | 0-6-4T |
| Number in Class | 2 |
| Road Numbers | 12-13 |
| Gauge | Std |
| Number Built | 2 |
| Builder | Beyer, Peacock |
| Year | 1900 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 16 |
| Engine Wheelbase (ft / m) | 26.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.60 |
| Overall Wheelbase (engine & tender) (ft / m) | 26.50 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 35,728 |
| Weight on Drivers (lbs / kg) | 107,744 / 48,872 |
| Engine Weight (lbs / kg) | 139,104 / 63,097 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2280 / 8.64 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.90 / 4 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 60 / 30 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63 / 1600 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 26" / 457x660 |
| Tractive Effort (lbs / kg) | 19,322 / 8764.32 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.58 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 111 / 10.22 |
| Grate Area (sq ft / m2) | 21.50 / 2 |
| Evaporative Heating Surface (sq ft / m2) | 1174 / 109.11 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1174 / 109.11 |
| Evaporative Heating Surface/Cylinder Volume | 153.31 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3655 |
| Same as above plus superheater percentage | 3655 |
| Same as above but substitute firebox area for grate area | 18,870 |
| Power L1 | 4030 |
| Power MT | 247.38 |