Data from US Military Railway Service Equipment Data Book -- German Locomotives supplied from the extensive collection of Allen Stanley (March 2004). Schichau works numbers were 3443-3444 in 1941.
Seeking to replace the Prussian P8s that were a mainstay of passenger locomotives, BMAG designed a 2-6-2 that used the boiler of the BR 50 2-10-0 locomotive. The prototypes underwent trials just before locomotive development was cut off by the surprising (to the Third Reich) durability of their enemies. Thus, of the planned stud of 800, only two went into service. When the wheel arrangement was revived after the defeat, it was scaled down by both the Deutches BundesBahn (Locobase 2459) and the East German Deutsche Reichsbahn (Locobase 1701).
Data from Albert Gieseler, "Lokomotiven der Baureihe 23.10" on his Dampfmaschinen und Lokomotiven website at [], last accessed 5 October 2022.; and "DR-BR 23" in Wikipedia at [
], last accessed 5 October 2022. Works numbers were 123001-123002 in 1955, 123003-123052 in 1958, and 123053-123113 in 1959.
Data from [] (June 2002). See also Alfred Gieseler, "Baureihe 64" at [
], last accessed 6 June 2017 and Tomasz Galka, "OK12", Standard Gauge Locomotives in Poland, at [
], last accessed 6 June 2017.
Principal Dimensions by Steve Llanso of Sweat House Media | |||
---|---|---|---|
Class | BR 23.01 | BR 23.10-DR | BR 64 |
Locobase ID | 4315 | 1701 | 4314 |
Railroad | Deutsche Reichsbahn | Deutsche Reichsbahn | Deutsche Reichsbahn |
Country | Germany | East Germany | Germany |
Whyte | 2-6-2 | 2-6-2 | 2-6-2T |
Number in Class | 2 | 113 | 520 |
Road Numbers | 23.01-23.02 | 23 1001-23 1113/35 1001-1035 | 64 001 - 64 520 |
Gauge | Std | Std | Std |
Number Built | 2 | 113 | 520 |
Builder | Berliner Maschinenbau | LKM Babelsberg | several |
Year | 1940 | 1956 | 1928 |
Valve Gear | Walschaert | Heusinger | Walschaert |
Locomotive Length and Weight | |||
Driver Wheelbase (ft / m) | 13.45 / 4.10 | 13.12 / 4 | 11.81 / 3.60 |
Engine Wheelbase (ft / m) | 35.10 / 10.70 | 33.14 / 10.10 | 29.53 / 9 |
Ratio of driving wheelbase to overall engine wheelbase | 0.38 | 0.40 | 0.40 |
Overall Wheelbase (engine & tender) (ft / m) | 62.37 / 19.01 | 61.06 / 18.61 | 29.53 / 9 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 40,345 / 18,300 | 33,731 / 15,300 | |
Weight on Drivers (lbs / kg) | 119,050 / 54,000 | 120,593 / 54,700 | 100,310 / 45,500 |
Engine Weight (lbs / kg) | 194,006 / 88,000 | 192,243 / 87,200 | 165,126 / 74,900 |
Tender Loaded Weight (lbs / kg) | 130,900 / 59,375 | 139,905 / 63,460 | |
Total Engine and Tender Weight (lbs / kg) | 324,906 / 147,375 | 332,148 / 150,660 | 165,126 / 74,900 |
Tender Water Capacity (gals / ML) | 6869 / 26.02 | 7392 / 28 | 2376 / 9 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8 / 7 | 11 / 10 | 3.30 / 3 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 66 / 33 | 67 / 33.50 | 56 / 28 |
Geometry Relating to Tractive Effort | |||
Driver Diameter (in / mm) | 68.90 / 1750 | 68.90 / 1750 | 59.10 / 1500 |
Boiler Pressure (psi / kPa) | 232.10 / 16 | 232.10 / 16 | 198.70 / 13.70 |
High Pressure Cylinders (dia x stroke) (in / mm) | 21.65" x 25.98" / 550x660 | 21.65" x 25.98" / 550x660 | 19.69" x 25.98" / 500x660 |
Tractive Effort (lbs / kg) | 34,868 / 15815.88 | 34,868 / 15815.88 | 28,785 / 13056.67 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.41 | 3.46 | 3.48 |
Heating Ability | |||
Tubes (number - dia) (in / mm) | 113 - 2.125" / 54 | 150 - 1.772" / 45 | 114 - 1.929" / 49 |
Flues (number - dia) (in / mm) | 35 - 5.23" / 133 | 38 - 5.236" / 133 | 32 - 4.961" / 126 |
Flue/Tube length (ft / m) | 17.05 / 5.20 | 13.78 / 4.20 | 12.47 / 3.80 |
Firebox Area (sq ft / m2) | 170 / 15.80 | 192.68 / 17.90 | 93.65 / 8.70 |
Grate Area (sq ft / m2) | 41.70 / 3.88 | 39.93 / 3.71 | 21.96 / 2.04 |
Evaporative Heating Surface (sq ft / m2) | 1900 / 176.58 | 1869 / 173.50 | 1124 / 104.40 |
Superheating Surface (sq ft / m2) | 695 / 64.59 | 707 / 65.70 | 400 / 37.18 |
Combined Heating Surface (sq ft / m2) | 2595 / 241.17 | 2576 / 239.20 | 1524 / 141.58 |
Evaporative Heating Surface/Cylinder Volume | 171.64 | 168.84 | 122.76 |
Computations Relating to Power Output (More Information) | |||
Robert LeMassena's Power Computation | 9679 | 9268 | 4363 |
Same as above plus superheater percentage | 12,292 | 11,770 | 5498 |
Same as above but substitute firebox area for grate area | 50,110 | 56,796 | 23,446 |
Power L1 | 21,682 | 22,140 | 11,099 |
Power MT | 1204.55 | 1214.26 | 731.80 |