Elsass-Lothringen 2-4-4 Locomotives in Germany
Class Details by Steve Llanso of Sweat House Media
Class D32/T5/T7 (Locobase 15589)
Data from diagram UG Type 151, Societe Alsacienne de Construction Mecaniques from SACM locomotive book supplied by Dany Machi up at [
] as
Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007); and " Baureihe 73 125
Lokomotiven der Baureihe 73 125" on Albert Gieseler's Dampfmaschinen und Lokomotiven website at [], last accessed 10 September 2024. Krauss-Munich delivered works numbers 4929-4938 in 1903, 5186-5188 in 1904, 5544-5548 in 1906, 5607-5611 in 1907. SACM works numbers were 6401-6415 in 1912.
Based on the Bavarian D-XII (Locobase 5931), the D32 (later T5 from 1906 to 1912) and ultimately T7, the class acted as shuttles between the Pfalzische (Palatinate State) stations and several rail hubs.
NB: German sources give the tube diameter as 45 mm, as shown in Locobase's specs, but also calculate the tube heating surface as 104.64 sq m (1,126 sq ft). The latter figure equates to an inside (fire side) tube diamter of 40 mm (1.57").
Only one was taken into the Deutsches Reichsbahn in 1923.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | D32/T5/T7 |
| Locobase ID | 15589 |
| Railroad | Elsass-Lothringen |
| Country | Germany |
| Whyte | 2-4-4T |
| Number in Class | 37 |
| Road Numbers | 888-897, 2214-2218, 2224-2237 |
| Gauge | Std |
| Number Built | 37 |
| Builder | SACM |
| Year | 1902 |
| Valve Gear | Heusinger |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6.73 / 2.05 |
| Engine Wheelbase (ft / m) | 28.87 / 8.80 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.23 |
| Overall Wheelbase (engine & tender) (ft / m) | 28.87 / 8.80 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 80,876 / 36,685 |
| Engine Weight (lbs / kg) | 154,323 / 70,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2402 / 9.10 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 67 / 33.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 64.60 / 1640 |
| Boiler Pressure (psi / kPa) | 169.70 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.72" x 22.05" / 450x560 |
| Tractive Effort (lbs / kg) | 15,460 / 7012.55 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.23 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 200 - 1.772" / 45 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.57 / 3.83 |
| Firebox Area (sq ft / m2) | 90.09 / 8.37 |
| Grate Area (sq ft / m2) | 21.10 / 1.96 |
| Evaporative Heating Surface (sq ft / m2) | 1271 / 118.10 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1271 / 118.10 |
| Evaporative Heating Surface/Cylinder Volume | 201.95 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3581 |
| Same as above plus superheater percentage | 3581 |
| Same as above but substitute firebox area for grate area | 15,288 |
| Power L1 | 4997 |
| Power MT | 272.43 |