Braunschweig State 2-6-2 Locomotives in Germany
Class Details by Steve Llanso of Sweat House Media
Class BR 46 / BR 75.6 (Locobase 4933)
Described on the Hildesheim Peine Kreiseisenbahn (HPKE) website [
] (first accessed December 2001; later http://www.hpke.de/, last accessed 12 October 2022); and "BLE 45 bis 49" in Wikipedia at [], last accessed 12 October 2022. The locomotive database [], visited 3 June 2005, shows the class all came from Krupp as follows:
Year Works # Braun # DRG #
1935 1458 45 75 601
1935 1500 46 75 602
1937 1712 47 75 603
1937 1713 48 75 604
1935 1514 49 75 605
Introduced on the BLE to handle passenger trains on the Gliesmarode-Fallersleben and Derneburg-Seesen runs as well as handling freight and even hump shunting.
According to the HKPE's extensive notes on all of their locomotives, these were grouped in Class 75 under the ReichsBahn along with other light Prairies. Once there, they were found unable to reach 75 kph (46.6 mph).
Both operated under the German National Railways from 1938 to 1947. 46 ran on the Braunschweig Schoeninger from 1947-1959, then on the Moselbahn (1959-1963), then on the HKPE (1963-1964), then back to the Braunschweig Schoeninger until 1970, when it was scrapped. 49 spent most of its career on the Braunschweig Schoeninger; its time on the HKPE came in 1964-1965. It was scrapped in 1971.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | BR 46 / BR 75.6 |
| Locobase ID | 4933 |
| Railroad | Braunschweig State |
| Country | Germany |
| Whyte | 2-6-2 |
| Number in Class | 5 |
| Road Numbers | 45-49/75 601-75 605 |
| Gauge | Std |
| Number Built | 5 |
| Builder | Krupp |
| Year | 1935 |
| Valve Gear | Heusinger |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11.81 / 3.60 |
| Engine Wheelbase (ft / m) | 29.53 / 9 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.40 |
| Overall Wheelbase (engine & tender) (ft / m) | 29.53 / 9 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 35,803 / 16,240 |
| Weight on Drivers (lbs / kg) | 107,365 / 48,700 |
| Engine Weight (lbs / kg) | 165,347 / 75,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2455 / 9.30 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 60 / 30 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 53.10 / 1349 |
| Boiler Pressure (psi / kPa) | 203.10 / 1400 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19.69" x 25.98" / 500x660 |
| Tractive Effort (lbs / kg) | 32,747 / 14853.81 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.28 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 103 - 1.772" / 45 |
| Flues (number - dia) (in / mm) | 32 - 5.236" / 133 |
| Flue/Tube length (ft / m) | 13.12 / 4 |
| Firebox Area (sq ft / m2) | 96.88 / 9 |
| Grate Area (sq ft / m2) | 22.28 / 2.07 |
| Evaporative Heating Surface (sq ft / m2) | 1123 / 104.30 |
| Superheating Surface (sq ft / m2) | 431 / 40 |
| Combined Heating Surface (sq ft / m2) | 1554 / 144.30 |
| Evaporative Heating Surface/Cylinder Volume | 122.65 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4525 |
| Same as above plus superheater percentage | 5792 |
| Same as above but substitute firebox area for grate area | 25,186 |
| Power L1 | 10,770 |
| Power MT | 663.45 |