Saxon VIb V

The Saxon Class VIb ${\displaystyle \textstyle {\mathfrak {V}}}$ 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
Number(s)	VIb V 161–174 DRG 34 8011
Quantity	14
Manufacturer	Sächsische Maschinenfabrik
Year(s) of manufacture	1889
Wheel arrangement	2-4-0
Axle arrangement	1′B n2v
Track gauge	1,435 mm (4 ft 8 ^1⁄2 in)
Length over buffers	15,083 mm (49 ft 5 ^3⁄4 in)
Service weight	367.7 kN
Adhesive weight	260.9 kN
Axle load	131.4 kN
Top speed	85 km/h (53 mph)
Driving wheel diameter	1,875 mm (6 ft 1 ^7⁄8 in)
Leading wheel diameter	1,230 mm (4 ft ^3⁄8 in)
Valve gear	Allan
No. of cylinders	2
LP cylinder bore	650 mm (25 ^9⁄16 in)
HP cylinder bore	440 mm (17 ^5⁄16 in)
Piston stroke	560 mm (22 ^1⁄16 in)
Boiler Overpressure	12 kg/cm^2 (1,180 kPa; 171 psi)
Grate area	1.82 m^2 (19.6 sq ft)
Evaporative heating area	102.13 m^2 (1,099.3 sq ft)
Tender	sä 3T 9

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

• Royal Saxon State Railways
• List of Saxon locomotives and railbuses

Literature

• 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.