Data from "William Bouch: No. 1269" archived in Grace's Guide to British Industrial History at [], last accessed 9 April 2017.
William Bouch's engine was presented in 24 September 1875 issue of the Engineer. It noted a claim that the locomotive could reach 60 mph hauling fourteen coaches.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Bogie passenger |
| Locobase ID | 20182 |
| Railroad | Stockton & Darlington |
| Country | Great Britain |
| Whyte | 4-4-0 |
| Number in Class | |
| Road Numbers | |
| Gauge | Std |
| Number Built | |
| Builder | Darlington |
| Year | 1874 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 10 / 3.05 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 94,080 / 42,674 |
| Tender Loaded Weight (lbs / kg) | 51,520 / 23,369 |
| Total Engine and Tender Weight (lbs / kg) | 145,600 / 66,043 |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 84 / 2134 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 30" / 432x762 |
| Tractive Effort (lbs / kg) | 12,283 / 5571.48 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 210 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 13.30 / 1.24 |
| Evaporative Heating Surface (sq ft / m2) | 1217 / 113.06 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1217 / 113.06 |
| Evaporative Heating Surface/Cylinder Volume | 154.42 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1862 |
| Same as above plus superheater percentage | 1862 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |