Elsass-Lothringen 4-4-0 Locomotives in Germany
Class Details by Steve Llanso of Sweat House Media
Class A18 / S 3 (Locobase 7916)
Data from diagram Loco: 129, Societe Alsacienne de Constructions Mecaniques from locomotive book supplied by Dany Machi up at [
] as
Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007).
These four-cylinder de Glehn compounds were a bit bigger than the Prussian S5s of similar vintage. Their boilers had the larger-diameter, internally finned Serve tubes.
NB: The data in this entry came from a difficult-to-read diagram, but are believed to be accurate nonetheless.
Like the Prussian engines, however, they had a relatively short service life because the trains they hauled kept gaining weight.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | A18 / S 3 |
| Locobase ID | 7916 |
| Railroad | Elsass-Lothringen |
| Country | Germany |
| Whyte | 4-4-0 |
| Number in Class | 50 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 50 |
| Builder | Graffenstaden |
| Year | 1902 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.84 / 3 |
| Engine Wheelbase (ft / m) | 23.13 / 7.05 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.43 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 72,752 / 32,000 |
| Engine Weight (lbs / kg) | 122,577 / 55,600 |
| Tender Loaded Weight (lbs / kg) | / 46,300 |
| Total Engine and Tender Weight (lbs / kg) | / 101,900 |
| Tender Water Capacity (gals / ML) | / 12 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | / 5 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 61 / 30.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 78 / 1980 |
| Boiler Pressure (psi / kPa) | 213.20 / 1470 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13.39" x 25.2" / 340x640 |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 20.87" x 25.2" / 530x640 |
| Tractive Effort (lbs / kg) | 14,872 / 6745.83 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.89 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 164 - 2.76" / 65 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.11 / 4.30 |
| Firebox Area (sq ft / m2) | 122.17 / 11.35 |
| Grate Area (sq ft / m2) | 24.54 / 2.28 |
| Evaporative Heating Surface (sq ft / m2) | 1770 / 164.45 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1770 / 164.45 |
| Evaporative Heating Surface/Cylinder Volume | 430.96 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5232 |
| Same as above plus superheater percentage | 5232 |
| Same as above but substitute firebox area for grate area | 26,047 |
| Power L1 | 6614 |
| Power MT | 400.85 |