Wurttembergische 4-6-0 Locomotives in Germany

Class Details by Steve Llanso of Sweat House Media

Class D / BR 38.1 (Locobase 5825)

Data from Maurice Demoulin, Locomotive Actuelle ... (Paris: Librairie Polytechnique Ch.Beranger, 1906), p 242-243. Additional information from Christian Lindecke's website [] (visited 28 Nov 2003) (translated by Google). To handle heavier passenger trains on the Bretten-Stuttgart line, the K.W.St.E had to move from two coupled axles to three and these 4-cylinder compounds were the result. They had Belpaire fireboxes and a staggered cylinder alignment that featured the inside HP cylinders driving the first axle and outside LP cylinders between the leading bogie and the first coupled axle, but driving the second axle.

Performance met the requirements: 250 tons at 60 km/h up a 1% grade and 90 km/h (55 mph) on the level.

At the end of World War I, Poland was given 4 of the class and France two. Eight were classified by DRG as BR 38 101-109, but they were out of service within the year.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassD / BR 38.1
Locobase ID5825
RailroadWurttembergische (Wurttemberg) Staatsbahn
Number in Class15
Road Numbers421-434 / BR 38 101-BR 38 108
Number Built15
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)33,069 / 15,000
Weight on Drivers (lbs / kg)98,767 / 44,800
Engine Weight (lbs / kg)141,978 / 64,400
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)55 / 27.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)65 / 1650
Boiler Pressure (psi / kPa)198.70 / 13.70
High Pressure Cylinders (dia x stroke) (in / mm)14.96" x 22.05" / 380x560
Low Pressure Cylinders (dia x stroke) (in / mm)23.62" x 22.05" / 600x560
Tractive Effort (lbs / kg)18,303 / 8302.11
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.40
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)24.75 / 2.30
Evaporative Heating Surface (sq ft / m2)1915 / 178
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1915 / 178
Evaporative Heating Surface/Cylinder Volume426.89
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4918
Same as above plus superheater percentage4918
Same as above but substitute firebox area for grate area
Power L1
Power MT

All material Copyright © SteamLocomotive.com
Wes Barris