Data from [], last accessed 20 August 2023. See also dampflokomotivarchiv.de list of ELNA 2s at [
], last accessed 28 August 2023. Locobase 21141 for an essay on the ELNA program. Hohenzollern turned out 4535 in 1925, and 4882-4883 in 1929; Krauss delivered works numbers 8336-8339 in 1925; Vulkan-Stettin produced 3853-3854 in 1925 and 3987-3990 in 1927; Hanomag turned out 10491-10492 in 1929; ,LHB (Linke-Hoffman) works numbers were 3125-3126 and 3156 in 1929; and BMAG (formerly Schwarzkopff) produced its works number 9557 in 1929.
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. Most ELNA Type 2s were superheated and offered a maximum 65 kph (40.4 mph).
Compared to their saturated-steam partners in Locobase 21143, the heizdampf Type 2 Mogul tanks presented more grate area, rolled on taller drivers, and drier steam to the cylinders.
Krauss's Elna 2 boilers conformed to an older design because the cost of retooling to produce the new design was deemed not worth the expense.
Data from [], last accessed 20 September 2023. See Locobase 21141 for an essay on the ELNA program. Works numbers were 21716, 21855 in 1930; 23695, 23697, 23726 in 1938; 24933-24934 i n1941, and 24935 in 1943.
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.
This entry shows the specifications for nassdampf Type 2s. Their rated maximum speed was 50 kph (31 mph). Three-quarters of all ELNA Type 2s used superheated boilers; they appear in Locobase 21144
Data from [], last accessed 20 September 2023; and "Baureihe 91 6486-6496" in Albert Gieseler's Dampfmaschinen und Lokomotiven website at [
], last accessed 2 September 2023. See also "ELNA-Lokomotiven | Typen | ELNA 5" on the dampflokomotiven website at [
], last accessed 2 September 2023. See Locobase 21141 for an essay on the ELNA program.
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.
This entry shows the specifications for heizdampf Type 5s. Although Locobase 21147 shows the saturated-boiler ELNA Type 5, no orders came for that variant.
Locobase has found several boiler variants for ELNA Type 5s. Several appear in Gieseler's index beginning at 91 6476. Henschel und Sohn and Schwarzkopff (aka Berliner Maschinenbau-Actien-Gesellschaft vormals L. Schwartzkopff, Berlin as of 1870) produced most of this collection, which used the boilers shown in the specifications. Krauss's four ELNA 5s from 1924 delivered a slightly different lokomotive to save costs.
Altogether, eighteen different customers, mostly kleinbahns, bought at least one ELNA 5.
Data from [], last accessed 20 September 2023. See Locobase 21141 for an essay on the ELNA program.
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.
This entry shows the specifications for nassdampf Type 5s. Their rated maximum speed was 50 kph (31 mph). All ELNA Type 3s used saturated boilers; they appear in Locobase 21148
Principal Dimensions by Steve Llanso of Middle Run Media | ||||
---|---|---|---|---|
Class | Elna type 2 heizdampf | Elna type 2 nassdampf | Elna type 5 heizdampf | Elna type 5 nassdampf |
Locobase ID | 21144 | 21143 | 21148 | 21147 |
Railroad | ELNA | ELNA | ELNA | ELNA |
Country | Germany | Germany | Germany | Germany |
Whyte | 2-6-0T | 2-6-0T | 2-6-0T | 2-6-0T |
Number in Class | 24 | 8 | 35 | |
Road Numbers | ||||
Gauge | Std | Std | Std | Std |
Number Built | 24 | 8 | 35 | |
Builder | several | Henschel | several | Henschel & Sohn |
Year | 1925 | 1930 | 1924 | 1924 |
Valve Gear | Heusinger | Heusinger | Heusinger | Heusinger |
Locomotive Length and Weight | ||||
Driver Wheelbase (ft / m) | 9.84 / 3 | 9.84 / 3 | 9.84 / 3 | 9.84 / 3 |
Engine Wheelbase (ft / m) | 17.39 / 5.30 | 9.84 / 4.30 | 17.39 / 5.30 | 17.39 / 5.30 |
Ratio of driving wheelbase to overall engine wheelbase | 0.57 | 1 | 0.57 | 0.57 |
Overall Wheelbase (engine & tender) (ft / m) | 17.39 / 5.30 | 9.84 / 4.30 | 17.39 / 5.30 | 17.39 / 5.30 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||||
Weight on Drivers (lbs / kg) | 82,012 / 37,200 | 79,807 / 36,200 | 92,594 / 42,000 | 85,980 / 39,000 |
Engine Weight (lbs / kg) | 101,192 / 45,900 | 99,208 / 45,000 | 119,049 / 54,000 | 107,365 / 48,700 |
Tender Loaded Weight (lbs / kg) | ||||
Total Engine and Tender Weight (lbs / kg) | ||||
Tender Water Capacity (gals / ML) | 1320 / 5 | 1320 / 5 | 1584 / 6 | 1584 / 6 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.30 / 1.20 | 1.10 / 1 | 1.80 / 1.60 | 1.80 / 1.60 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 46 / 23 | 44 / 22 | 51 / 25.50 | 48 / 24 |
Geometry Relating to Tractive Effort | ||||
Driver Diameter (in / mm) | 47.20 / 1200 | 43.30 / 1100 | 47.20 / 1200 | 47.20 / 1200 |
Boiler Pressure (psi / kPa) | 174 / 1200 | 174 / 1200 | 174 / 1200 | 174 / 1200 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16.93" x 21.65" / 430x550 | 16.14" x 21.65" / 410x550 | 17.72" x 21.65" / 450x550 | 16.93" x 21.65" / 430x550 |
Tractive Effort (lbs / kg) | 19,445 / 8820.11 | 19,264 / 8738.01 | 21,302 / 9662.44 | 19,445 / 8820.11 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.22 | 4.14 | 4.35 | 4.42 |
Heating Ability | ||||
Tubes (number - dia) (in / mm) | 88 - 1.772" / 45 | |||
Flues (number - dia) (in / mm) | 18 - 5.236" / 133 | |||
Flue/Tube length (ft / m) | 11.48 / 3.50 | |||
Firebox Area (sq ft / m2) | 71.80 / 6.67 | 80.73 / 7.50 | ||
Grate Area (sq ft / m2) | 15.07 / 1.40 | 12.92 / 1.20 | 17.87 / 1.66 | 17.87 / 1.66 |
Evaporative Heating Surface (sq ft / m2) | 630 / 58.57 | 853 / 79.20 | 757 / 70.30 | 1023 / 95 |
Superheating Surface (sq ft / m2) | 230 / 21.40 | 277 / 25.70 | ||
Combined Heating Surface (sq ft / m2) | 860 / 79.97 | 853 / 79.20 | 1034 / 96 | 1023 / 95 |
Evaporative Heating Surface/Cylinder Volume | 111.68 | 166.38 | 122.50 | 181.35 |
Computations Relating to Power Output (More Information) | ||||
Robert LeMassena's Power Computation | 2622 | 2248 | 3109 | 3109 |
Same as above plus superheater percentage | 3330 | 2248 | 3949 | 3109 |
Same as above but substitute firebox area for grate area | 15,866 | 17,840 | ||
Power L1 | 7423 | 8093 | ||
Power MT | 598.63 | 578.07 |