Graham Davies (members.tripod.co.uk/Graham_Davies/index-51.html) takes a brave stab at sorting out the confusion created when an earlier Davies ordered 2-4-0s and 0-6-0s for both the P&T and for the Manchester & Milford at nearly the same time. As nearly as he can reconstruct it, the first 0-6-0 of the class (works number 1712) was named Lady Elizabeth. She swapped names with the 2-4-0 Owen, which had been meant for the P&T, but ended up on the M&M instead. Davies (works number 1844) arrived in 1868.
Comparison with the Cambrian 0-6-0s shown in Locobase 20131 confirms the report that Sharp, Stewart's trio duplicated other six-coupled "Sharp Goods" produced for Furness and Cambrian Railways at the same time.
As with the Pembroke 2-4-0, rebuilding in 1887 raised boiler pressure to 140 psi, but otherwise left the basic dimensions as shown here unchanged.
The Great Western took over the P&T in 1896 and renumbered these two freight engines as 1362-1363. Both were scrapped in 1902.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Owen |
| Locobase ID | 4899 |
| Railroad | Pembroke & Tenby |
| Country | Great Britain |
| Whyte | 0-6-0 |
| Number in Class | 2 |
| Road Numbers | 4-5 |
| Gauge | Std |
| Number Built | 2 |
| Builder | Sharp, Stewart |
| Year | 1865 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14.75 / 4.50 |
| Engine Wheelbase (ft / m) | 14.75 / 4.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 22,400 |
| Weight on Drivers (lbs / kg) | 58,240 / 26,417 |
| Engine Weight (lbs / kg) | 58,240 / 26,417 |
| Tender Loaded Weight (lbs / kg) | 30,352 / 13,767 |
| Total Engine and Tender Weight (lbs / kg) | 88,592 / 40,184 |
| Tender Water Capacity (gals / ML) | 1440 / 5.45 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 32 / 16 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 54 / 1372 |
| Boiler Pressure (psi / kPa) | 120 / 830 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 |
| Tractive Effort (lbs / kg) | 11,605 / 5263.95 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.02 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 156 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.67 |
| Firebox Area (sq ft / m2) | 81.50 / 7.57 |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | 952 / 88.48 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 952 / 88.48 |
| Evaporative Heating Surface/Cylinder Volume | 170.45 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | |
| Same as above plus superheater percentage | |
| Same as above but substitute firebox area for grate area | 9780 |
| Power L1 | 2629 |
| Power MT | 298.55 |