Data from Graham Glover, British Locomotive Design 1825-1960 (London: George Allen & Unwin Ltd, 1967) and Ahrons (1927).
Very similar to his brother Patrick's Great Northern 0-4-2s, these engines by James Stirling were smaller in dimension (although the 1865 series had 17 x 24" cylinders and slightly larger 61" drivers). Note, however, although they were almost exactly the same diameter (48 3/4" in the G&SWs vs 48.5" in the GN), these boilers were larger in proportion to the grate than were those of Patrick's creations and provided more steam under similar circumstances, although the firebox heating surface was less at 78 sq ft than Patrick's engines' 92.4 sq ft.
Data from Graham Glover, British Locomotive Design 1825-1960 (London: George Allen & Unwin Ltd, 1967)
Before he relinquished his post as locomotive superintendent to his brother James and went on to the Great Northern, Patrick Stirling turned out these low-drivered freight engines. Note that they had plenty of boiler and grate for the job.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | unknown | unknown |
| Locobase ID | 3004 | 3193 |
| Railroad | Glasgow & South Western | Glasgow & South Western |
| Country | Great Britain | Great Britain |
| Whyte | 0-4-2 | 0-4-2 |
| Number in Class | ||
| Road Numbers | ||
| Gauge | Std | Std |
| Number Built | ||
| Builder | several | several |
| Year | 1864 | 1858 |
| Valve Gear | Stephenson | 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) | 49,280 / 22,353 | |
| Engine Weight (lbs / kg) | 60,480 / 27,433 | |
| 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) | 41 / 20.50 | |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 60 / 1524 | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 120 / 830 | 120 / 830 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 22" / 406x559 | 16" x 22" / 406x559 |
| Tractive Effort (lbs / kg) | 9574 / 4342.70 | 11,968 / 5428.60 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.12 | |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 162 - 2" / 51 | 196 - 2" / 51 |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 10.25 | |
| Firebox Area (sq ft / m2) | 78 / 7.25 | 76 / 7.06 |
| Grate Area (sq ft / m2) | 13.50 / 1.25 | 13.25 / 1.23 |
| Evaporative Heating Surface (sq ft / m2) | 930 / 86.43 | 1130 / 105.02 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 930 / 86.43 | 1130 / 105.02 |
| Evaporative Heating Surface/Cylinder Volume | 181.65 | 220.72 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 1620 | 1590 |
| Same as above plus superheater percentage | 1620 | 1590 |
| Same as above but substitute firebox area for grate area | 9360 | 9120 |
| Power L1 | 3094 | 2831 |
| Power MT | 253.30 | |