Baden IX b

Specifications
Specifications
Configuration:;
• Whyte	0-6-2T
• UIC	C1′ n2(4v)zt
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Driver dia.	1,080 mm (3 ft 6+1⁄2 in)
Trailing dia.	850 mm (2 ft 9+1⁄2 in)
Wheelbase:
• Overall	5,050 mm (16 ft 6+3⁄4 in)
Rack system	Riggenbach rack system
Length:;
• Over beams	10.900 m (35 ft 9+1⁄4 in)
Height	4,248 mm (13 ft 11+1⁄4 in)
Axle load	14.3 tonnes (14.1 long tons; 15.8 short tons)
Adhesive weight	42.8 tonnes (42.1 long tons; 47.2 short tons)
Empty weight	45.3–45.6 tonnes (44.6–44.9 long tons; 49.9–50.3 short tons)
Service weight	56.7–57.0 tonnes (55.8–56.1 long tons; 62.5–62.8 short tons)
Fuel capacity	Coal: 1.5 tonnes (1.5 long tons; 1.7 short tons)
Water cap.	5,000 litres (1,100 imp gal; 1,300 US gal)
Boiler:;
No. of heating tubes	178
Heating tube length	3,200 or 3,850 mm (10 ft 6 in or 12 ft 7+1⁄2 in)
Boiler pressure	14 kgf/cm2 (1.37 MPa; 199 psi)
Heating surface:
• Firebox	1.8 m2 (19 sq ft)
• Radiative	8.2 m2 (88 sq ft)
• Tubes	89.43 or 107.5 m2 (962.6 or 1,157.1 sq ft)
• Evaporative	97.59–115.7 m2 (1,050.5–1,245.4 sq ft)
Superheater:;
• Heating area	25.15 m2 (270.7 sq ft)
Cylinders	4
Cylinder size	450 mm (17+11⁄16 in)
Piston stroke	550 mm (21+5⁄8 in)
Cogwheel drive cylinder bore	450 mm (17+11⁄16 in)
Cogwheel drive piston stroke	550 mm (21+5⁄8 in)
Valve gear	Walschaerts (Heusinger)

Type and origin
Type and origin
Builder	Maschinenfabrik Esslingen
Build date	1910 (4), 1921 (3)
Total produced	7

Baden IX b
DRG Class 97.2
Baden IX b ; DRG Class 97.2
	Baden 371 (Maschinenfabrik Esslingen 3546 of 1910)
Builder
Type and origin
Builder	Maschinenfabrik Esslingen
Build date	1910 (4), 1921 (3)
Total produced	7
Configuration:;
Specifications
Configuration:;
• Whyte	0-6-2T
• UIC	C1′ n2(4v)zt
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Driver dia.	1,080 mm (3 ft 6+1⁄2 in)
Trailing dia.	850 mm (2 ft 9+1⁄2 in)
Wheelbase:
• Overall	5,050 mm (16 ft 6+3⁄4 in)
Rack system	Riggenbach rack system
Length:;
• Over beams	10.900 m (35 ft 9+1⁄4 in)
Height	4,248 mm (13 ft 11+1⁄4 in)
Axle load	14.3 tonnes (14.1 long tons; 15.8 short tons)
Adhesive weight	42.8 tonnes (42.1 long tons; 47.2 short tons)
Empty weight	45.3–45.6 tonnes (44.6–44.9 long tons; 49.9–50.3 short tons)
Service weight	56.7–57.0 tonnes (55.8–56.1 long tons; 62.5–62.8 short tons)
Fuel capacity	Coal: 1.5 tonnes (1.5 long tons; 1.7 short tons)
Water cap.	5,000 litres (1,100 imp gal; 1,300 US gal)
Boiler:;
No. of heating tubes	178
Heating tube length	3,200 or 3,850 mm (10 ft 6 in or 12 ft 7+1⁄2 in)
Boiler pressure	14 kgf/cm2 (1.37 MPa; 199 psi)
Heating surface:
• Firebox	1.8 m2 (19 sq ft)
• Radiative	8.2 m2 (88 sq ft)
• Tubes	89.43 or 107.5 m2 (962.6 or 1,157.1 sq ft)
• Evaporative	97.59–115.7 m2 (1,050.5–1,245.4 sq ft)
Superheater:;
• Heating area	25.15 m2 (270.7 sq ft)
Cylinders	4
Cylinder size	450 mm (17+11⁄16 in)
Piston stroke	550 mm (21+5⁄8 in)
Cogwheel drive cylinder bore	450 mm (17+11⁄16 in)
Cogwheel drive piston stroke	550 mm (21+5⁄8 in)
Valve gear	Walschaerts (Heusinger)
Maximum speed
Performance figures
Maximum speed	Adhesion: 45 km/h (28 mph); Rack: 18 km/h (11 mph);
Numbers
Career
Numbers	G.Bad.St.E.: 344, 345, 371, 736–739; DRG 97 201 – 97 204, 97 251 – 97 253;
Retired	mid-1930s

The Baden Class IX b were German rack railway steam locomotives with the Grand Duchy of Baden State Railways, whose cogwheel drive was designed for running on track with a Riggenbach rack system.

The locomotive was produced in two sub-classes, which were designated as IX b¹ and IX b². In 1925 they were grouped by the Deutsche Reichsbahn as DRG Class 97.2 within their renumbering plan. The engines were employed on the Höllentalbahn in the Black Forest until they were eventually and later replaced by DRG Class 85 locomotives.

References

Lohr, Hermann; Thielmann, Georg (1988). Lokomotiv-Archiv Baden. transpress Berlin. ISBN 3-344-00210-4.
Weisbrod, Manfred; Petznik, Wolfgang (1981). Dampflokomotiven deutscher Eisenbahnen, Baureihe 97–99 (EFA 1.4) (in German) (2nd ed.). Düsseldorf: Alba. pp. 19–22. ISBN 3-87094-087-5.

Baden IX b

See also

References