Data from Park Benjamin (Ed), Appleton's Cyclopedia of Applied Mechanics (New York: D Appleton & Company, 1884), p. 342-345; and "Locomotives at the Paris Exhibition", Engineering, Volume III [3] (January-June 1867), p.310.. Boiler pressure is an estimate as is the construction date.
According to Steamindex ([], last accessed 28 March 2009), this builder didn't produce any locomotives until 1866. From then to 1888, it turned out mostly industrial locomotives as well as some for "internal use". Apparently, the latter included at last one express single, which is illustrated on p. 337 of the Cyclopedia. It may have been a trial horse that attracted no buyers.
A 1980 postcard shows the Paris Exhibition engine, which doesn't suggest any dramatic departures from typical British singles designs except for the short, rounded cab apparently outfitted with side portholes.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 10025 |
| Railroad | North British |
| Country | Great Britain |
| Whyte | 2-2-2 |
| Number in Class | |
| Road Numbers | |
| Gauge | Std |
| Number Built | |
| Builder | Lilleshall |
| Year | 1866 |
| Valve Gear | Allan |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 16.50 / 5.03 |
| 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) | 27,500 / 12,474 |
| Engine Weight (lbs / kg) | 69,680 / 31,606 |
| 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) | 46 / 23 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 84 / 2134 |
| Boiler Pressure (psi / kPa) | 135 / 930 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 21" / 406x533 |
| Tractive Effort (lbs / kg) | 7344 / 3331.19 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.74 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 186 - 1.813" / 46 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.15 / 3.40 |
| Firebox Area (sq ft / m2) | 96.80 / 9 |
| Grate Area (sq ft / m2) | 18 / 1.67 |
| Evaporative Heating Surface (sq ft / m2) | 1076 / 100 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1076 / 100 |
| Evaporative Heating Surface/Cylinder Volume | 220.18 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2430 |
| Same as above plus superheater percentage | 2430 |
| Same as above but substitute firebox area for grate area | 13,068 |
| Power L1 | 6033 |
| Power MT | 483.65 |