Data from "Rail Motor Coaches", The Railway Magazine, (15 September 1905), p.150. Works numbers were 4721-4722.
These rail-motor coaches showed a healthy turn of speed, hitting 46 mph in service. They were built to the design of the L B & SC's locomotive superintendent D E Marsh. The coaches had seating for 24 passengers in one of two compartments and between 16 and 24 passengers in the other.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Steam motor |
| Locobase ID | 10526 |
| Railroad | London, Brighton & South Coast |
| Country | Great Britain |
| Whyte | 0-2-2+4T |
| Number in Class | 2 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 2 |
| Builder | Beyer, Peacock |
| Year | 1905 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.50 / 2.90 |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 22.08 / 6.73 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 84,280 / 38,229 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 540 / 2.05 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.90 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 46 / 1168 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 8.5" x 14" / 216x356 |
| Tractive Effort (lbs / kg) | 3364 / 1525.89 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 242 - 1.375" / 35 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 41.60 / 3.87 |
| Grate Area (sq ft / m2) | 7 / 0.65 |
| Evaporative Heating Surface (sq ft / m2) | 369 / 34.29 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 369 / 34.29 |
| Evaporative Heating Surface/Cylinder Volume | 401.31 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1260 |
| Same as above plus superheater percentage | 1260 |
| Same as above but substitute firebox area for grate area | 7488 |
| Power L1 | 8660 |
| Power MT | |