Data from "The West Lancashire Railway and Locomotives", Locomotive Magazine, Volume XXIV [24] (15 June 1918) p.96. Works numberr was 854 in 1882.
The 1 1/2 mile (2.4 km) branch from Hesketh Bank on the western bank of the River Douglas conveyed freight from the Leeds & Liverpool Canal's Tarleton Locks to the WL's main line. MW's typical shunter design was enlarged to fill the bill.
Like the earlier WL engines, however, the Tarleton (renumbered 10) had only a very short lifetime and was scrapped before the 1897 merger with the Lancashire & Yorkshire.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Tarleton |
| Locobase ID | 20659 |
| Railroad | West Lancashire |
| Country | Great Britain |
| Whyte | 0-6-0ST |
| Number in Class | 1 |
| Road Numbers | 4 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Manning Wardle |
| Year | 1882 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12 / 3.66 |
| Engine Wheelbase (ft / m) | 12 / 3.66 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 12 / 3.66 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 67,536 / 30,634 |
| Engine Weight (lbs / kg) | 67,536 / 30,634 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 67,536 / 30,634 |
| Tender Water Capacity (gals / ML) | 960 / 3.64 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 38 / 19 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 45 / 1143 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 22" / 381x559 |
| Tractive Effort (lbs / kg) | 13,090 / 5937.53 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.16 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 70 / 6.50 |
| Grate Area (sq ft / m2) | 10 / 0.93 |
| Evaporative Heating Surface (sq ft / m2) | 752 / 69.86 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 752 / 69.86 |
| Evaporative Heating Surface/Cylinder Volume | 167.12 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1400 |
| Same as above plus superheater percentage | 1400 |
| Same as above but substitute firebox area for grate area | 9800 |
| Power L1 | 2572 |
| Power MT | 251.88 |