Saxon VIb V

The Saxon Class VIb were four-coupled, tender locomotives in express train service with the Royal Saxon State Railways. In 1925, the Deutsche Reichsbahn grouped these engines into DRG Class 34.8.

Saxon VIb V
DRG Class 34.80
Type and origin
BuilderSächsische Maschinenfabrik
Build date1889
Total produced14
Specifications
Configuration:
​
 • Whyte2-4-0
 • UIC1′B n2v
Gauge1,435 mm (4 ft 8+1⁄2 in)
Leading dia.1,230 mm (4 ft 3⁄8 in)
Driver dia.1,875 mm (6 ft 1+7⁄8 in)
Length:
​
 • Over beams15,083 mm (49 ft 5+3⁄4 in)
Axle load131.4 kN
Adhesive weight260.9 kN
Service weight367.7 kN
Boiler pressure12 kg/cm2 (1,180 kPa; 171 psi)
Heating surface:
 • Firebox		1.82 m2 (19.6 sq ft)
 • Evaporative102.13 m2 (1,099.3 sq ft)
Cylinders2
Piston stroke560 mm (22+1⁄16 in)
High-pressure cylinder440 mm (17+5⁄16 in)
Low-pressure cylinder650 mm (25+9⁄16 in)
Valve gearAllan
Performance figures
Maximum speed85 km/h (53 mph)
Career
NumbersVIb V 161–174
DRG 34 8011

History

The Saxon Class VIb V locomotives were built from 1889 onwards in a total of 14 units by the Hartmann and were designed for hauling express trains. They were mostly retired by 1922. The Reichsbahn took over just one engine and gave it the running number 34 8011. It was retired in 1925.

Technical features

These locomotives were the first compound locomotives in Saxony. Its two-cylinder, compound engine was located behind the carrying axle and drove the final axle. The locomotives had an inside Allan valve gear. The steam dome was in the centre of the boiler over the middle axle. The running gear had an improved Nowotny carrying axle, nevertheless it did not have good riding qualities. The Schleifer brakes were later converted to Westinghouse brakes.

See also

References
    • Spielhoff, Lothar (1990). Länderbahn-Dampf-Lokomotiven. Band 1: Preußen, Mecklenburg, Oldenburg, Sachsen und Elsaß-Lothringen (in German). Stuttgart: Franckh'sche Verlagshandlung. ISBN 3-440-06145-0.
    • Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1976). Dampflokomotiven deutscher Eisenbahnen, Baureihe 01–39 (EFA 1.1) (in German) (3rd ed.). Düsseldorf: Alba Buchverlag. pp. 198–199. ISBN 3-87094-081-6.
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