DRG Class 85

Specifications
Specifications
Configuration:;
• Whyte	2-10-2T
• UIC	1′E1′ h3t
• German	Gt 57.20
Driver	Divided: Inner cylinder to 2nd coupled axle, outer to 3rd
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	0,850 mm (2 ft 9+1⁄2 in)
Driver dia.	1,400 mm (4 ft 7+1⁄8 in)
Trailing dia.	0,850 mm (2 ft 9+1⁄2 in)
Wheelbase:
• Axle spacing; (Asymmetrical)	2,850 mm (9 ft 4+1⁄4 in) +; 1,700 mm (5 ft 6+7⁄8 in) +; 1,700 mm (5 ft 6+7⁄8 in) +; 1,700 mm (5 ft 6+7⁄8 in) +; 1,700 mm (5 ft 6+7⁄8 in) +; 2,850 mm (9 ft 4+1⁄4 in) =;
• Engine	12,500 mm (41 ft 1⁄8 in)
Length:;
• Over headstocks	15,000 mm (49 ft 2+1⁄2 in)
• Over buffers	16,300 mm (53 ft 5+3⁄4 in)
Width	3,050 mm (10 ft 1⁄16 in)
Height	4,550 mm (14 ft 11+1⁄8 in)
Axle load	19.94 tonnes (19.63 long tons; 21.98 short tons)
Adhesive weight	99.7 tonnes (98.1 long tons; 109.9 short tons)
Empty weight	107.5 tonnes (105.8 long tons; 118.5 short tons)
Service weight	133.6 tonnes (131.5 long tons; 147.3 short tons)
Fuel type	Coal
Fuel capacity	4.5 tonnes (4.4 long tons; 5.0 short tons)
Water cap.	14 m3 (3,080 imp gal; 3,700 US gal)
Firebox:
• Grate area	3.5 m2 (38 sq ft)
Boiler:;
• Pitch	3,150 mm (10 ft 4 in)
• Tube plates	4,700 mm (15 ft 5 in)
• Small tubes	50 mm (1+15⁄16 in), 155 off
• Large tubes	133 mm (5+1⁄4 in), 41 off
Boiler pressure	14 bar (14.3 kgf/cm2; 203 psi)
Heating surface:
• Firebox	15.0 m2 (161 sq ft)
• Tubes	105.6 m2 (1,137 sq ft)
• Flues	75.25 m2 (810.0 sq ft)
• Total surface	195.85 m2 (2,108.1 sq ft)
Superheater:;
• Heating area	72.50 m2 (780.4 sq ft)
Cylinders	Three
Cylinder size	600 mm × 660 mm (23+5⁄8 in × 26 in)
Valve gear	Heusinger (Walschaerts)

Type and origin
Type and origin
Power type	Steam
Builder	Henschel & Sohn
Serial number	22110–22117, 22142–22144
Build date	1932–1933
Total produced	10

DRG Class 85
DRG Class 85
	85 007 in November 2009
Power type
Type and origin
Power type	Steam
Builder	Henschel & Sohn
Serial number	22110–22117, 22142–22144
Build date	1932–1933
Total produced	10
Configuration:;
Specifications
Configuration:;
• Whyte	2-10-2T
• UIC	1′E1′ h3t
• German	Gt 57.20
Driver	Divided: Inner cylinder to 2nd coupled axle, outer to 3rd
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	0,850 mm (2 ft 9+1⁄2 in)
Driver dia.	1,400 mm (4 ft 7+1⁄8 in)
Trailing dia.	0,850 mm (2 ft 9+1⁄2 in)
Wheelbase:
• Axle spacing; (Asymmetrical)	2,850 mm (9 ft 4+1⁄4 in) +; 1,700 mm (5 ft 6+7⁄8 in) +; 1,700 mm (5 ft 6+7⁄8 in) +; 1,700 mm (5 ft 6+7⁄8 in) +; 1,700 mm (5 ft 6+7⁄8 in) +; 2,850 mm (9 ft 4+1⁄4 in) =;
• Engine	12,500 mm (41 ft 1⁄8 in)
Length:;
• Over headstocks	15,000 mm (49 ft 2+1⁄2 in)
• Over buffers	16,300 mm (53 ft 5+3⁄4 in)
Width	3,050 mm (10 ft 1⁄16 in)
Height	4,550 mm (14 ft 11+1⁄8 in)
Axle load	19.94 tonnes (19.63 long tons; 21.98 short tons)
Adhesive weight	99.7 tonnes (98.1 long tons; 109.9 short tons)
Empty weight	107.5 tonnes (105.8 long tons; 118.5 short tons)
Service weight	133.6 tonnes (131.5 long tons; 147.3 short tons)
Fuel type	Coal
Fuel capacity	4.5 tonnes (4.4 long tons; 5.0 short tons)
Water cap.	14 m3 (3,080 imp gal; 3,700 US gal)
Firebox:
• Grate area	3.5 m2 (38 sq ft)
Boiler:;
• Pitch	3,150 mm (10 ft 4 in)
• Tube plates	4,700 mm (15 ft 5 in)
• Small tubes	50 mm (1+15⁄16 in), 155 off
• Large tubes	133 mm (5+1⁄4 in), 41 off
Boiler pressure	14 bar (14.3 kgf/cm2; 203 psi)
Heating surface:
• Firebox	15.0 m2 (161 sq ft)
• Tubes	105.6 m2 (1,137 sq ft)
• Flues	75.25 m2 (810.0 sq ft)
• Total surface	195.85 m2 (2,108.1 sq ft)
Superheater:;
• Heating area	72.50 m2 (780.4 sq ft)
Cylinders	Three
Cylinder size	600 mm × 660 mm (23+5⁄8 in × 26 in)
Valve gear	Heusinger (Walschaerts)
Maximum speed
Performance figures
Maximum speed	80 km/h (50 mph)
Indicated power	1,500 PS (1,100 kW; 1,480 hp)
Tractive effort	280 kN (62,900 lbf)
Operators
Career
Operators	Deutsche Reichsbahn
Official name	85 001 – 85 010
Retired	1961

The Class 85 was a German goods train tank engine and standard locomotive (Einheitslok) with the Deutsche Reichsbahn.

History

In 1931, the DRG ordered ten locomotives from the firm of Henschel that were taken into the fleet as numbers 85 001 to 85 010. The Class 85 was intended for hauling passenger and goods trains. They were however also employed as pusher locomotives on the Höllentalbahn in the Black Forest. Thanks to this engine, the Höllental Railway could do away with rack railway operations from 1933. The running gear and the superheated system were taken from the Class 44. The boiler, with a few minor alterations, was the same as that of the Class 62. All the locomotives were stabled at the Freiburg shed. Apart from number 85 004, which was lost in the Second World War, all the engines were in operation in the Black Forest until 1961, the year the route was converted from experimental electrical operations with 20 kV/50 Hz lines to the usual Deutsche Bundesbahn standard of 15 kV 16.7 Hz AC. One engine, number 85 007, was still in service in Wuppertal until the end of the year, but they were all retired by the beginning of the next year.

Preserved locomotives

Number 85 007 belongs to the town of Freiburg im Breisgau. It is not operational, but is maintained by the Bahn-Sozialwerk-Gruppe. The engine is housed in the former locomotive shed.

References

Hütter, Ingo (2021). Die Dampflokomotiven der Baureihen 60 bis 91 der DRG, DRB, DB, und DR (in German). Werl: DGEG Medien. pp. 265–267. ISBN 978-3-946594-21-5.
Scharf, Hans; Wollny, Burkhard (1987). Die Höllentalbahn (in German). Freiburg: EK Verlag. ISBN 3-88255-780-X.
Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1978). Dampflokomotiven deutscher Eisenbahnen, Baureihe 60–96 (EFA 1.3) (in German) (4th ed.). Düsseldorf: Alba. pp. 114–116, 242. ISBN 3-87094-083-2.

External links

History of the Class 85 in the Höllental, Black Forest

v t e Classes of Deutsche Reichsbahn locomotives
Express train tender locomotives	01 01.10 02 02.1 H 02.10 03 03.10 04 05 06 19.10
Passenger train tender locomotives	23 24
Goods train tender locomotives	41 42 43 44 45 50 52 56.2–8
Express train tank locomotives	61
Passenger train tank locomotives	62 64 71.0
Goods train tank locomotives	80 81 84 85 86 87 89.0
Rack railway, branch line & narrow gauge locomotives	97.5 98.10 98.11 99.19 99.21 99.22 99.31 99.32 99.73–76
Electric locomotives	E 04 E 05 E 06.1 E 15 E 16 E 16.5 E 17 E 18 E 19 E 21 E 21.5 E 44 E 60 E 63 E 75 E 77 E 80 E 91 E 93 E 94 E 95 E 178 E 244
Diesel locomotives	V 3001 V 3201 V 3601 V 3602 V 3801 Kö I Köf II
Railbuses and multiple units	ET 25 ET 25.1 ET 31 ET 41 ET 51 ET 51.1 ET 55 ET 65 ET 82 ET 85 ET 87 ET 89 ET 91 SVT 125 SVT 137 ET 165 ET 166 ET 167 ET 168 ET 169 ET 171 SVT 877 Wismar
State railway locomotive lists	Baden Bavaria Mecklenburg Oldenburg Palatinate Prussia Saxony Württemberg