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Württemberg DW
Kittel steam railcar
Germany | 1893 | 16 produced
DW 8 on a works photo of Maschinenfabrik Esslingen
DW 8 on a works photo of Maschinenfabrik Esslingen

The DW type steam railcars were developed for the Royal Württemberg State Railways from 1893, but a few examples were also built for the Baden State Railways. They were also known under the name “Kittel steam railcar”, which can be traced back to the Württemberg chief engineer Eugen Kittel.

A sample and six production vehicles were equipped with a boiler according to Henri Serpollet's patent. Unlike other boilers, this one did not have a water supply, but only the amount of steam that was currently required was generated directly by evaporation on the hot walls. Despite its low weight, it was not convincing. For this reason, Kittel developed its own type of upright boiler, with which the existing cars were equipped. Since these proved themselves, Württemberg ordered ten more vehicles with the new boiler, and an order for eight vehicles in almost identical design also came from Baden.

The railcars were mainly used on small branch lines with low passenger numbers in the area of the two operators. When the Reichsbahn took them over, they were given the numbers 9 to 14. In the 1930s, most of the examples were either retired or sold to private railways. A vehicle arrived in France in 1945 and remained in service there until 1953.

VariantDW 1-4DW 5-7DW 8-17
General
Built1893-1915
ManufacturerEsslingen
Axle config0-2-2T 
Gauge4 ft 8 1/2 in (Standard gauge)
Seats40
Dimensions and Weights
Length36 ft 1 1/16 in37 ft 4 13/16 in
Wheelbase15 ft 1 1/8 in16 ft 4 7/8 in
Fixed wheelbase15 ft 1 1/8 in16 ft 4 7/8 in
Empty weight39,242 lbs
Service weight38,140 lbs50,706 lbs
Adhesive weight28,440 lbs30,644 lbs
Axle load28,440 lbs30,644 lbs
Water capacity396 us gal
Fuel capacity992 lbs (coal)1,323 lbs (coal)
Power
Power sourcesteam
Indicated power79 hp (59 kW)
Optimal speed15 mph14 mph11 mph
Top speed37 mph
Starting effort3,311 lbf3,669 lbf4,440 lbf
Power Plant
Driver diameter39.4 in
Boiler pressure232 psi
Expansion typesimple
Cylinderstwo, 7 1/2 x 11 13/16 intwo, 7 7/8 x 11 13/16 intwo, 8 11/16 x 11 13/16 in
Boiler
Grate area5 sq ft6.7 sq ft7.6 sq ft
Firebox area34 sq ft
Tube heating area240.6 sq ft
Evaporative heating area274.6 sq ft
Superheater area49.8 sq ft
Total heating area274.6 sq ft324.4 sq ft
Calculated Values
steam railcar
local
Eugen Kittel
last changed: 03/2022
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