Baden IV c

Baden IV c
Type and origin Builder MBG Karlsruhe Build date 1875–1887 Total produced 59
Specifications Configuration: ​  • Whyte 2-4-0 Leading dia. 1,080 mm (3 ft 6+1⁄2 in) Driver dia. 1,680 mm (5 ft 6+1⁄4 in) Wheelbase: ​  • Overall 3,900 mm (12 ft 9+1⁄2 in) Length: ​  • Over beams 14,367 mm (47 ft 1+3⁄4 in) Height 4,150 mm (13 ft 7+1⁄2 in) Axle load 11.30 t (11.12 long tons; 12.46 short tons) Adhesive weight 22.50 t (22.14 long tons; 24.80 short tons) Empty weight 31.80 t (31.30 long tons; 35.05 short tons) Service weight 35.50 t (34.94 long tons; 39.13 short tons) Boiler: ​ No. of heating tubes 198 Heating tube length 3,300 mm (10 ft 10 in) Boiler pressure 9.0 kgf/cm2 (883 kPa; 128 lbf/in2) Heating surface: ​  • Firebox 1.47 m2 (15.8 sq ft)  • Radiative 6.03 m2 (64.9 sq ft)  • Tubes 86.27 m2 (928.6 sq ft)  • Evaporative 92.30 m2 (993.5 sq ft) Cylinders 2 Cylinder size 435 mm (17+1⁄8 in) Piston stroke 610 mm (24 in) Valve gear Stephenson Train brakes Westinghouse compressed air brake
Performance figures Maximum speed 70 km/h (43 mph)
Career Numbers 1 ... 393 Retired 1901–1925

The steam locomotives of Baden Class IV c were passenger locomotives operated by Grand Duchy of Baden State Railway in the former south German state of Baden.

History

As part of the purchase of 2-4-0 locomotives in the early 1870s, a total of eight batches of Class IV c engines were ordered. These locomotives were used above all on lines with steep inclines in the Black Forest and the Odenwald. As a result, several engines were equipped with a Riggenbach counter-pressure brake.

Design features

Then dimensions of these engines were largely the same as those of the Class IV b. However the double frame was dropped and replaced by a simple plate frame. The engine had a very short wheelbase and as a result good curve-running performance. In addition the carrying axle had a side play of 10 mm. It was returned to its centre position by sloping bearing surfaces (geneigte Doppelflächen). The grate area of the firebox turned out to be very small; as a result its steam generation was not particularly satisfactory. Trials with ribbed tubes did not produce any improvements. The large steam dome sat on the rear boiler section.

The outside wet-steam engine had inside valves and drove the first coupled axle. The wheels were sprung with leaf springs located over the top, that were linked by a compensating lever between the coupled wheels.

The vehicles were equipped with tenders of classes 2 T 8 or 2 T 6.67. Several locomotives were equipped with rearward-facing driver's cabs on tenders. This enabled them to work routes without a turntable.

Sources

• Hermann Lohr, Georg Thielmann: Lokomotiv-Archiv Baden. transpress, Berlin 1988, ISBN 3-344-00210-4

See also

• Grand Duchy of Baden State Railway
• List of Baden locomotives and railbuses