Bavarian State / DRG 2-8-0 Locomotives in Germany
Class Details by Steve Llanso of Sweat House Media
Class GtL 4/5 / BR 98 11 (Locobase 6035)
Data from Christian Lindecke's website [
] (visited 15 May 2004) (translated by Google) and US Military Railway Service Equipment Data Book -- German Locomotives supplied by Allen Stanley from his extensive Rail Data Exchange. See also [], last accessed 14 May 2011.
Adding a trailing truck to the basic GtL 4/4 design (see Locobase 6034 (0-8-2T) and 6036 (the original GtL 4/4) did not work as intended -- the locomotives still rode badly and slowly. So the DRG converted a total of 29 of the GtL 4/4s that the Bavarian had built in the mid-1920s by adding a Bissel truck under the smokebox. The speed limit rose to 55 km/h (34 mph) while the maximum axle loading dropped from 12.2 metric tons to 10.6. This modification met requirements and the sturdy little localbahn engines served for decades, all but one in Bavaria. The last was retired in 1968.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | GtL 4/5 / BR 98 11 |
| Locobase ID | 6035 |
| Railroad | Bavarian State / DRG |
| Country | Germany |
| Whyte | 2-8-0T |
| Number in Class | 29 |
| Road Numbers | 98 1101-98 1129 |
| Gauge | Std |
| Number Built | |
| Builder | DRG |
| Year | 1934 |
| Valve Gear | Heusinger |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 20.01 / 6.10 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 20.01 / 6.10 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 23,369 / 10,600 |
| Weight on Drivers (lbs / kg) | 93,696 / 42,500 |
| Engine Weight (lbs / kg) | 111,774 / 50,700 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1346 / 5.10 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.90 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 39 / 19.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 39.60 / 1006 |
| Boiler Pressure (psi / kPa) | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18.11" x 20" / 460x508 |
| Tractive Effort (lbs / kg) | 24,499 / 11112.57 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.82 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 89 - 1.772" / 45 |
| Flues (number - dia) (in / mm) | 12 - 5.236" / 133 |
| Flue/Tube length (ft / m) | 11.48 / 3.50 |
| Firebox Area (sq ft / m2) | 62.95 / 5.85 |
| Grate Area (sq ft / m2) | 14.42 / 1.34 |
| Evaporative Heating Surface (sq ft / m2) | 656 / 61 |
| Superheating Surface (sq ft / m2) | 204 / 18.93 |
| Combined Heating Surface (sq ft / m2) | 860 / 79.93 |
| Evaporative Heating Surface/Cylinder Volume | 110.02 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2509 |
| Same as above plus superheater percentage | 3111 |
| Same as above but substitute firebox area for grate area | 13,582 |
| Power L1 | 5406 |
| Power MT | 508.80 |