The steam locomotives of DR Class 23.10, (from 1 June 1970 Class 35.10) were passenger train engines built for the Deutsche Reichsbahn in East Germany after the Second World War.Is produced in H0 scale to many train model railway.

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DR Class 23.10 (35.10)
35 1019-5
Type and origin Build date 1955–1959 Total produced 113
Specifications Configuration: ​  • Whyte 2-6-2  • German P 35.18 Gauge 1,435 mm (4 ft 8+1⁄2 in) Leading dia. 1,000 mm (3 ft 3+3⁄8 in) Driver dia. 1,750 mm (5 ft 8+7⁄8 in) Trailing dia. 1,250 mm (4 ft 1+1⁄4 in) Length: ​  • Over beams 22,660 mm (74 ft 4+1⁄4 in) Axle load 18.3 tonnes (18.0 long tons; 20.2 short tons) Adhesive weight 54.7 tonnes (53.8 long tons; 60.3 short tons) Empty weight 78.5 tonnes (77.3 long tons; 86.5 short tons) Service weight 87.2 tonnes (85.8 long tons; 96.1 short tons) Tender type 2′2′ T28 Fuel capacity Coal: 10 tonnes (9.8 long tons; 11 short tons) Water cap. 28 m3 (990 cu ft) or 28,000 litres (6,200 imp gal; 7,400 US gal) Boiler: ​ No. of heating tubes 150 No. of smoke tubes 38 Heating tube length 4,200 mm (13 ft 9+1⁄4 in) Boiler pressure 16 bar (1.60 MPa; 232 psi) Heating surface:  • Firebox 3.71 square metres (39.9 sq ft)  • Evaporative 159.60 m2 (1,717.9 sq ft) Superheater: ​  • Heating area 68.50 m2 (737.3 sq ft) Cylinders Two, outside Cylinder size 550 mm (21+5⁄8 in) Piston stroke 660 mm (26 in)
Performance figures Maximum speed Forwards: 110 km/h (68 mph) Reverse: 50 km/h (31 mph) Indicated power 1,250 kW (1,700 PS; 1,680 hp)
Career Numbers New: 23 1001 – 23 1113 1970: 35 1001 – 35 1113 Retired 1991

History

The Class 23.10 was an evolutionary development by the DR of the DRG Class 23 standard locomotives or Einheitsdampflokomotiven built earlier by the Deutsche Reichsbahn-Gesellschaft. Only two of the latter were completed due to the onset of the war. The same dimensions were used for the driving and running gear, but the locomotives were given IfS/DR mixer-preheaters, boilers equipped with combustion chambers and a large driver's cab. The feedwater dome was omitted from locomotives numbered 23 1003 and later. The first of 113 units was deployed in 1955, and they were used for light to medium express train services, being allocated numbers 23 1001–1113.

With the introduction of EDP numbering on 1 January 1970, all locomotives were re-numbered to 35 1001–1113.

The last engines were retired from Nossen in May 1977, number 35 1113 however had to be reactivated due to the energy crisis and continued in service until 1985.

The locomotives were equipped with tenders of Class 2'2' T 28.

Preserved locomotives

Remaining locomotives of this class today include:

• 35 1019 Lausitzer Dampflokclub Cottbus, operational
• 35 1021 Eisenbahn & Technik Museum Rügen, Prora
• 35 1028 in pieces, Röbel/Müritz
• 35 1074 in pieces, Görlitz
• 35 1097 private, at IG 58 3047 Glauchau, operational
• 35 1113 DB Museum, stored at IG Dampflok Nossen

See also

• List of East German Deutsche Reichsbahn locomotives and railbuses
• Neubaulok
• DB Class 23

Literature

• Ebel, J.U.; Stange, A.; Schlegel, D. (2003). Die Baureihe 23.10 (in German). Freiburg: EK-Verlag. ISBN 978-3-88255-123-5.
• Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1976). Dampflokomotiven deutscher Eisenbahnen, Baureihe 01–39 (EFA 1.1) (in German) (3rd ed.). Düsseldorf: Alba Buchverlag. pp. 181–184. ISBN 3-87094-081-6.

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