Data from "LIGHT ENGINES- LIGHT TRAINS", Civil Engineer and Architect's Journal (Vol 11, 1848), p. 223.
This was an inspection carriage that Locobase couldn't resist including in the database. Mr. Samuel, "engineer" of the EC Railway, noted that this single-car motor was designed to carry him and other inspectors. As the specifications show, this was a small vehicle, only 12 1/2 feet long and capable of carrying 7 passengers. "The engine", reported Samuel, "is fitted complete, with link-motion, feed-pumps, &c." The tiny cylinders turned a crank axle that drove the front axle of the two.
Samdel claimed that this little scooter would hit 30 mph with 7 on board and at times reached 44 mph.
Pleased with this engine, which he noted dispensed with the need to make up a special train for inspections, Samdel applied the steam motor principle as an alternative to branch line operation of regular locomotive-and-carriage sets. See Locobase 9646.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Inspection steam motor |
| Locobase ID | 9645 |
| Railroad | Eastern Counties (GER) |
| Country | Great Britain |
| Whyte | 0-2-2T |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 1 |
| Builder | Eastern Counties |
| Year | 1848 |
| Valve Gear | link |
| 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) | |
| Engine Weight (lbs / kg) | 2800 / 1270 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 48 / 0.18 |
| 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) | 40 / 1016 |
| Boiler Pressure (psi / kPa) | 50 / 340 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 3.5" x 6" / 89x152 |
| Tractive Effort (lbs / kg) | 78 / 35.38 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 35 - 1.25" / 32 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 3.50 / 1.07 |
| Firebox Area (sq ft / m2) | 5.50 / 0.51 |
| Grate Area (sq ft / m2) | 1.40 / 0.13 |
| Evaporative Heating Surface (sq ft / m2) | 44 / 4.09 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 44 / 4.09 |
| Evaporative Heating Surface/Cylinder Volume | 658.55 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 70 |
| Same as above plus superheater percentage | 70 |
| Same as above but substitute firebox area for grate area | 275 |
| Power L1 | 3567 |
| Power MT | |