DRG Class 02
| Company type | Steam locomotive class |
|---|---|
| Industry | Railway |
| Founded | 1925 |
| Headquarters | Germany |
| Products | Standardized express steam locomotives |
Template:No footnotes
Template:Infobox locomotive
The DRG Class 02 locomotives (Baureihe 02 or BR 02) were standardized express steam engines operated by the Deutsche Reichsbahn-Gesellschaft. The locomotive numbered 02 001 holds the distinction of being the first standardized steam engine completed within the Reichsbahn fleet.
During the procurement process for a standard express locomotive, the Deutsche Reichsbahn compared a superheated two-cylinder design—the DRG Class 01—against a four-cylinder compound alternative, which became the Class 02. Starting in 1925, ten units of each model were constructed; those of Class 02 bore running numbers from 02 001 through 02 010. The initial eight were produced by Henschel in 1925, with two additional units built by Maffei in 1926.
The compound configuration of the Class 02 locomotives suffered from design shortcomings that limited its ability to deliver peak power below speeds of approximately seventy kilometers per hour. Moreover, when operating under one hundred indicated horsepower, these engines consumed more steam than their Class 01 counterparts.
Compared to the simpler two-cylinder Class 01 models, the Class 02's more complex drive system resulted in greater maintenance demands. Consequently, no further orders for this class were placed. Between the years of1937 and1942, all Class 02 machines underwent conversion to two-cylinder simple expansion operation and were reclassified as Class 01 units, receiving new numbers ranging from01 011 to01 233 through01 241.
Regarding tenders, the first eight locomotives were originally paired with2'2' T30 tenders, while the final two received slightly larger2'2 T32 tenders; eventually, all eight earlier engines were also fitted with the larger tender type.
See also
Literature
- Maidment, David. The German Pacific Locomotive: Its Design and Development. Locomotive Portfolios series. Barnsley, South Yorkshire, UK: Pen & Sword Transport, 2017. ISBN 9781473852495.
- Deutsche Eisenbahnen. Weltbild Verlag. German language. July 2016.
- Weisbrod, Manfred, and Wolfgang Petznick. Baureihe 01. Transpress Verlag. German language. July 2016.
- Großes Lok-Portrait 01.05. EK Verlag, Freiburg. German language. July 2016.
- Hütter-01bis45, p. 73.
- Koschinski, Konrad. Legendäre Baureihe 01. Eisenbahn-Journal Sonderausgabe 2006,2. Verlagsgruppe Bahn, 2006. ISBN 3-89610-156-0. German language.
- Weisbrod-EFA1.1, pp. 36–38, 242.