Data from "ELNA 4" in Wikipedia at [], last accessed 3 September 2023. Works number was 11687-11688,
Caveat: The following advice recognizes that reputable sources disagree on many points. Locobase has tried to identify a representative type for each ELNA. To see all the variants of the design, Locobase recommends three websites still active as of September 2023:
1) Albert Gieseler's Lokomotiv-Baureihen page at [] beginning with BR 92 (look for build dates between 1924-1945)
2) The ELNA screens at dampflokomotivenarchive.de at [], whose subpages show all the locomotive identified as ELNAs.of a particular type.
3) Various Wikipedia sites using the term ELNA.
All ELNAs could be produced with either saturated boilers (nassdampf) or superheated boilers (heizdampf). Regardless of wheel arrangement or boiler type, all ELNA cylinders used the same 550 mm (21.65") stroke. The Type 4s shown here used saturated boilers; the two superheater Type 4s appear in Locobase 211449
Unlike most ELNAs, which had T-shaped water tanks behind the cab, O&K chose to put the water tanks in their usual places on the running boards in front of the cabs.
These two nassdampfers were the first locomotives to operate on the RKB after it converted its original 22-km (13.7 mile) segment between Rosenberg and Landsberg from a 750 mm (29.5") schmalspur to the standard gauge. They were the only two steam locomotives on the line.
One survivor of World War II action went on the East German Deutches Reich as their 89 954. Wikipedia comments (in google translation) that "the running properties of the locomotives were not satisfactory, which is why they were primarily used in shunting service. Nevertheless, the engine served the DRB from 1948-1966, when the DRB transferred it to a paper factory in Crossen
See Locobases 21142-21155 for the other ELNA types.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | Elna type 4 nassdampf |
Locobase ID | 21150 |
Railroad | Rosenberger Kreibahn |
Country | Germany |
Whyte | 0-6-0T |
Number in Class | 2 |
Road Numbers | 1-2/ |
Gauge | Std |
Number Built | 2 |
Builder | Orenstein & Koppel |
Year | 1927 |
Valve Gear | Heusinger |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 10.17 / 3.10 |
Engine Wheelbase (ft / m) | 10.17 / 3.10 |
Ratio of driving wheelbase to overall engine wheelbase | 1 |
Overall Wheelbase (engine & tender) (ft / m) | 10.17 / 3.10 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 30,865 / 14,000 |
Weight on Drivers (lbs / kg) | 98,106 / 44,500 |
Engine Weight (lbs / kg) | 98,106 / 44,500 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 1452 / 5.50 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.70 / 1.50 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 55 / 27.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 47.20 / 1200 |
Boiler Pressure (psi / kPa) | 174 / 1200 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16.14" x 21.65" / 410x550 |
Tractive Effort (lbs / kg) | 17,672 / 8015.89 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.55 |
Heating Ability | |
Tubes (number - dia) (in / mm) | |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 11.48 / 3.50 |
Firebox Area (sq ft / m2) | |
Grate Area (sq ft / m2) | 15.07 / 1.40 |
Evaporative Heating Surface (sq ft / m2) | 861 / 80 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 861 / 80 |
Evaporative Heating Surface/Cylinder Volume | 167.94 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2622 |
Same as above plus superheater percentage | 2622 |
Same as above but substitute firebox area for grate area | |
Power L1 | |
Power MT |