Deutsche Reichsbahn 2-8-4 Locomotives in Germany


Class Details by Steve Llanso of Sweat House Media

Class BR 65.10 (Locobase 1708)

Data from [link], 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.

[link] (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)


Class BR 83 10 (Locobase 1709)

Data from [link], supplemented by Albert Gieseler at [link], last accessed 9 May 2011. See also "DR-Baureihe 83.10" in Wikipedia at [link], 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
ClassBR 65.10BR 83 10
Locobase ID1708 1709
RailroadDeutsche ReichsbahnDeutsche Reichsbahn
CountryEast GermanyEast Germany
Whyte2-8-4T2-8-4T
Number in Class8827
Road Numbers65 1001-65 108583 1001-83 1027
GaugeStdStd
Number Built8827
BuilderDRLKM Babelsberg
Year19511955
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.76 / 4.50
Engine Wheelbase (ft / m)43.64 / 13.3036.42 / 11.10
Ratio of driving wheelbase to overall engine wheelbase 0.41
Overall Wheelbase (engine & tender) (ft / m)43.64 / 13.3036.42 / 11.10
Axle Loading (Maximum Weight per Axle) (lbs / kg)38,581 / 17,50033,069 / 15,000
Weight on Drivers (lbs / kg)156,528 / 71,000134,400 / 60,963
Engine Weight (lbs / kg)268,302 / 121,700230,720 / 104,653
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)4224 / 163696 / 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 / 32.5056 / 28
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)63 / 160049.20 / 1250
Boiler Pressure (psi / kPa)232.10 / 1600203.10 / 1400
High Pressure Cylinders (dia x stroke) (in / mm)23.62" x 25.98" / 600x66019.69" x 25.98" / 500x660
Tractive Effort (lbs / kg)45,389 / 20588.1335,342 / 16030.88
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.45 3.80
Heating Ability
Tubes (number - dia) (in / mm)158 - 1.732" / 44124 - 1.732" / 44
Flues (number - dia) (in / mm)30 - 5.236" / 13324 - 5.236" / 133
Flue/Tube length (ft / m)13.78 / 4.2012.47 / 3.80
Firebox Area (sq ft / m2)168.29 / 15.64130.84 / 12.16
Grate Area (sq ft / m2)37.12 / 3.4526.90 / 2.50
Evaporative Heating Surface (sq ft / m2)1586 / 147.441147 / 106.61
Superheating Surface (sq ft / m2)510 / 47.39422 / 39.25
Combined Heating Surface (sq ft / m2)2096 / 194.831569 / 145.86
Evaporative Heating Surface/Cylinder Volume120.37125.27
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation86165463
Same as above plus superheater percentage10,6836939
Same as above but substitute firebox area for grate area48,43533,748
Power L112,98010,185
Power MT731.27668.28

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