Data from [], last accessed 12 May 2011.
East German "Neubaulok" (standard new design). The 65 class first appeared in 1951, with 65.10 following three years later. Despite the relatively low drivers, this was a passenger-service engine.
[] (a German steam locomotive parts supplier) gives the normal steaming capacity as 10,000 kg/hr. The same site says these were rated as capable of hauling a 420-short ton passenger train up a 2% grade at 90 kph.
See also H. Le Fleming in Ransome-Wallis (1959)
Data from [], supplemented by Albert Gieseler at [
], last accessed 9 May 2011. See also "DR-Baureihe 83.10" in Wikipedia at [
], last accessed 10 March 2025.
Very low-drivered freight tank engine built by East Germany as part of their "Neubaulok" series of standard designs. They hauled passenger trains in branch-line service at speeds up to 60 kph (37 mph). A plate frame held the fuly-welded boiler and tank. In addition to the Krauss-Helmholz bogie that combined the leading truck with the first coupled axle, the BR 83.10s running gear included a flangleless third coupled axle and an outside-framed bogie for the two axles under the tank.
Testing soon revealed several problems including the superheater regulator design and the compressed-air powered reverser. Even though several other shortcomings became apparent, a motive power shortage required the DR to procure 26 more. On some lines, notably that of the Erzgebirge route, the class proved useful in part because of its relativly large fuel and water capacities.
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | BR 65.10 | BR 83 10 |
Locobase ID | 1708 | 1709 |
Railroad | Deutsche Reichsbahn | Deutsche Reichsbahn |
Country | East Germany | East Germany |
Whyte | 2-8-4T | 2-8-4T |
Number in Class | 88 | 27 |
Road Numbers | 65 1001-65 1085 | 83 1001-83 1027 |
Gauge | Std | Std |
Number Built | 88 | 27 |
Builder | DR | LKM Babelsberg |
Year | 1951 | 1955 |
Valve Gear | Walschaert | Walschaert |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 14.76 / 4.50 | |
Engine Wheelbase (ft / m) | 43.64 / 13.30 | 36.42 / 11.10 |
Ratio of driving wheelbase to overall engine wheelbase | 0.41 | |
Overall Wheelbase (engine & tender) (ft / m) | 43.64 / 13.30 | 36.42 / 11.10 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 38,581 / 17,500 | 33,069 / 15,000 |
Weight on Drivers (lbs / kg) | 156,528 / 71,000 | 134,400 / 60,963 |
Engine Weight (lbs / kg) | 268,302 / 121,700 | 230,720 / 104,653 |
Tender Loaded Weight (lbs / kg) | ||
Total Engine and Tender Weight (lbs / kg) | ||
Tender Water Capacity (gals / ML) | 4224 / 16 | 3696 / 14 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 9.90 / 9 | 8.80 / 8 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 65 / 32.50 | 56 / 28 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 63 / 1600 | 49.20 / 1250 |
Boiler Pressure (psi / kPa) | 232.10 / 1600 | 203.10 / 1400 |
High Pressure Cylinders (dia x stroke) (in / mm) | 23.62" x 25.98" / 600x660 | 19.69" x 25.98" / 500x660 |
Tractive Effort (lbs / kg) | 45,389 / 20588.13 | 35,342 / 16030.88 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.45 | 3.80 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 158 - 1.732" / 44 | 124 - 1.732" / 44 |
Flues (number - dia) (in / mm) | 30 - 5.236" / 133 | 24 - 5.236" / 133 |
Flue/Tube length (ft / m) | 13.78 / 4.20 | 12.47 / 3.80 |
Firebox Area (sq ft / m2) | 168.29 / 15.64 | 130.84 / 12.16 |
Grate Area (sq ft / m2) | 37.12 / 3.45 | 26.90 / 2.50 |
Evaporative Heating Surface (sq ft / m2) | 1586 / 147.44 | 1147 / 106.61 |
Superheating Surface (sq ft / m2) | 510 / 47.39 | 422 / 39.25 |
Combined Heating Surface (sq ft / m2) | 2096 / 194.83 | 1569 / 145.86 |
Evaporative Heating Surface/Cylinder Volume | 120.37 | 125.27 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 8616 | 5463 |
Same as above plus superheater percentage | 10,683 | 6939 |
Same as above but substitute firebox area for grate area | 48,435 | 33,748 |
Power L1 | 12,980 | 10,185 |
Power MT | 731.27 | 668.28 |