Austrian State 2-8-2 Locomotives in Austria
Class Details by Steve Llanso of Sweat House Media
Class BBOe 378 / OeBB 93 (Locobase 4687)
Data from [
] (24 Oct 2004) and [] (last accessed 26 September 2008).
] (24 Oct 2004) notes that Alexander Lerner developed this class (then 378) to operate on secondary lines. The light axle loading and good percentage of superheat combined in a powerful locomotive for light rail. For its boiler size, the 378 was one of the heaviest locomotives to go into service. Four builders contributed to the class: StEG, Wiener-Neustadt, Sigl, and Krauss Linz.)
When Nazi Germany took over Austria in the 1938 Anschluss, the DRG incorporated 167 of the class as BauReihe 93.13. The rump Slovak State's national railway ordered 25 slightly modified versions in 1941.
After World War II, which saw the loss of 11 of the clas and the repatriation of 28 to Yugoslavia, 128 went into the successor +BB. Of these, 72 later received the Giesl ejector stack system and siederohrdrosselung (?) which increased performance by 30%.
The 378/WLB 74 was a very handy class and saw out steam on the +BB.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | BBOe 378 / OeBB 93 |
| Locobase ID | 4687 |
| Railroad | Austrian State |
| Country | Austria |
| Whyte | 2-8-2T |
| Number in Class | 167 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 167 |
| Builder | Floridsdorf |
| Year | 1927 |
| Valve Gear | Lentz poppet |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.78 / 4.20 |
| Engine Wheelbase (ft / m) | 27.66 / 8.43 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.50 |
| Overall Wheelbase (engine & tender) (ft / m) | 27.66 / 8.43 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 97,003 / 44,000 |
| Engine Weight (lbs / kg) | 145,505 / 66,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 145,505 / 66,000 |
| Tender Water Capacity (gals / ML) | 2640 / 10 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 40 / 20 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44.90 / 1140 |
| Boiler Pressure (psi / kPa) | 203.10 / 14 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.72" x 22.44" / 450x570 |
| Tractive Effort (lbs / kg) | 27,091 / 12288.29 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.58 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.76 / 4.50 |
| Firebox Area (sq ft / m2) | 104.37 / 9.70 |
| Grate Area (sq ft / m2) | 21.52 / 2 |
| Evaporative Heating Surface (sq ft / m2) | 1192 / 110.80 |
| Superheating Surface (sq ft / m2) | 323 / 30 |
| Combined Heating Surface (sq ft / m2) | 1515 / 140.80 |
| Evaporative Heating Surface/Cylinder Volume | 186.10 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4371 |
| Same as above plus superheater percentage | 5289 |
| Same as above but substitute firebox area for grate area | 25,649 |
| Power L1 | 10,965 |
| Power MT | 996.82 |